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Naproxen Sodium
DOSAGE AND ADMINISTRATION–ADULTS
Adjust dosage to individual and the severity of his condition, recognizing that the milligram for milligram potency relationship among all dosage forms has not been precisely established clinically. It is important to increase dosage until symptoms are controlled. Dosage should be increased more gradually in debilitated or emaciated patients. In continued therapy, gradually reduce dosage to the lowest effective maintenance level, after symptoms have been controlled for a reasonable period.
The 100 mg and 200 mg tablets are for use in severe neuropsychiatric conditions.
– In general, dosages in the lower range are sufficient for most elderly patients. Since they appear to be more susceptible to hypotension and neuromuscular reactions, such patients should be observed closely. Dosage should be tailored to the individual, response carefully monitored, and dosage adjusted accordingly. Dosage should be increased more gradually in elderly patients. Elderly Patients
– Increase dosage gradually until symptoms are controlled. Maximum improvement may not be seen for weeks or even months. Continue optimum dosage for 2 weeks; then gradually reduce dosage to the lowest effective maintenance level. Daily dosage of 200 mg is not unusual. Some patients require higher dosages (e.g., 800 mg daily is not uncommon in discharged mental patients). Psychotic Disorders
Hospitalized Patients: – It is recommended that initial treatment be with chlorpromazine HCI injection until patient is controlled. Usually patient becomes quiet and co-operative within 24 to 48 hours and oral doses may be substituted and increased until the patient is calm. 500 mg a day is generally sufficient. While gradual increases to 2,000 mg a day or more may be necessary, there is usually little therapeutic gain to be achieved by exceeding 1,000 mg a day for extended periods. In general, dosage levels should be lower in the elderly, the emaciated and the debilitated. Acute Schizophrenic or Manic States
– 25 mg t.i.d. Increase gradually until effective dose is reached – usually 400 mg daily. Less Acutely Disturbed
– 10 mg t.i.d. or q.i.d., or 25 mg b.i.d. or t.i.d. Outpatients
– 25 mg t.i.d. After 1 or 2 days, daily dosage may be increased by 20 to 50 mg at semi-weekly intervals until patient becomes calm and cooperative. More Severe Cases
– Initial treatment should be with intramuscular chlorpromazine. Subsequent doses should be oral, 25 to 50 mg t.i.d. Prompt Control of Severe Symptoms
– 10 to 25 mg q4 to 6h, p.r.n., increased, if necessary. Nausea and Vomiting
– 25 to 50 mg, 2 to 3 hours before the operation. Presurgical Apprehension
– 25 to 50 mg t.i.d. or q.i.d. If symptoms persist for 2 to 3 days, parenteral therapy is indicated. Intractable Hiccups
– 25 to 50 mg t.i.d. or q.i.d. Can usually be discontinued after several weeks, but maintenance therapy may be necessary for some patients. Acute Intermittent Porphyria
DOSAGE AND ADMINISTRATION – PEDIATRIC PATIENTS (6 months to 12 years of age)
Chlorpromazine should generally not be used in pediatric patients under 6 months of age except where potentially lifesaving. It should not be used in conditions for which specific pediatric dosages have not been established.
Severe Behavioral Problems
– Select route of administration according to severity of patient's condition and increase dosage gradually as required. Oral: ¼ mg/lb body weight q4 to 6h, p.r.n. (e.g., for 40 lb child – 10 mg q4 to 6h). Outpatients
– As with outpatients, start with low doses and increase dosage gradually. In severe behavior disorders higher dosages (50 to 100 mg daily and in older children, 200 mg daily or more) may be necessary. There is little evidence that behavior improvement in severely disturbed mentally retarded patients is further enhanced by doses beyond 500 mg per day. Hospitalized Patients
– Dosage and frequency of administration should be adjusted according to the severity of the symptoms and response of the patient. The duration of activity following intramuscular administration may last up to 12 hours. Subsequent doses may be given by the same route if necessary. Oral: ¼ mg/lb body weight (e.g., 40 lb child – 10 mg q4 to 6h). Nausea and Vomiting
–¼ mg/lb body weight orally 2 to 3 hours before operation. Presurgical Apprehension
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Anastrozole
• shake well before use • do not exceed the maximum recommended daily dose in a 24 hour period • dose may be taken once a day preferably at bedtime, in divided doses, or as directed by a doctor • drink a full glass (8 oz) of liquid with each dose adults and children 12 years and older: 2 to 4 tablespoonfuls children 6 to 11 years: 1 to 2 tablespoonfuls children under 6 years: ask a doctor
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Ibuprofen
do not take more than directed
the smallest effective dose should be used
adults and children 12 years and over: take 1 tablet every 4 to 6 hours while symptoms persistif pain or fever does not respond to 1 tablet, 2 tablets may be used
do not exceed 6 tablets in 24 hours, unless directed by a doctor
children under 12 years: ask a doctor
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Benztropine Mesylate
Since there is no significant difference in onset of effect after intravenous or intramuscular injection, usually there is no need to use the intravenous route. The drug is quickly effective after either route, with improvement sometimes noticeable a few minutes after injection. In emergency situations, when the condition of the patient is alarming, 1 to 2 mL of the injection normally will provide quick relief. If the parkinsonian effect begins to return, the dose can be repeated.
Because of cumulative action, therapy should be initiated with a low dose which is increased gradually at five or six-day intervals to the smallest amount necessary for optimal relief. Increases should be made in increments of 0.5 mg, to a maximum of 6 mg, or until optimal results are obtained without excessive adverse reactions.
The following dosing guidelines were written in reference to both benztropine mesylate tablets and COGENTIN Injection. Benztropine mesylate tablets should be used when patients are able to take oral medication. Postencephalitic and Idiopathic Parkinsonism:
The usual daily dose is 1 to 2 mg, with a range of 0.5 to 6 mg parenterally.
As with any agent used in parkinsonism, dosage must be individualized according to age and weight, and the type of parkinsonism being treated. Generally, older patients, and thin patients cannot tolerate large doses. Most patients with postencephalitic parkinsonism need fairly large doses and tolerate them well. Patients with a poor mental outlook are usually poor candidates for therapy.
In idiopathic parkinsonism, therapy may be initiated with a single daily dose of 0.5 to 1 mg at bedtime. In some patients, this will be adequate; in others 4 to 6 mg a day may be required.
In postencephalitic parkinsonism, therapy may be initiated in most patients with 2 mg a day in one or more doses. In highly sensitive patients, therapy may be initiated with 0.5 mg at bedtime, and increased as necessary.
Some patients experience greatest relief when given the entire dose at bedtime; others react more favorably to divided doses, two to four times a day. Frequently, one dose a day is sufficient, and divided doses may be unnecessary or undesirable.
The long duration of action of this drug makes it particularly suitable for bedtime medication when its effects may last throughout the night, enabling patients to turn in bed during the night more easily, and to rise in the morning.
When benztropine mesylate injection, USP is started, do not terminate therapy with other antiparkinsonian agents abruptly. If the other agents are to be reduced or discontinued, it must be done gradually. Many patients obtain greatest relief with combination therapy.
Benztropine mesylate injection, USP may be used concomitantly with, SINEMET (Ccarbidopa-Levodopalevodopa), or with levodopa, in which case dosage adjustment may be required in order to maintain optimum response.
In treating extrapyramidal disorders due to neuroleptic drugs (e.g., phenothiazines), the recommended dosage is 1 to 4 mg once or twice a day parenterally. Dosage must be individualized according to the need of the patient. Some patients require more than recommended; others do not need as much. Drug-Induced Extrapyramidal Disorders:
In acute dystonic reactions, 1 to 2 mL of the injection usually relieves the condition quickly.
When extrapyramidal disorders develop soon after initiation of treatment with neuroleptic drugs (e.g., phenothiazines), they are likely to be transient. One to 2 mg of benztropine mesylate injection, USP two or three times a day usually provides relief within one or two days. If such disorders recur, COGENTIN can be reinstituted.
Certain drug-induced extrapyramidal disorders that develop slowly may not respond to benztropine mesylate injection, USP.
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Chlorpromazine Hydrochloride
Adults
Adjust dosage to individual and the severity of his condition, recognizing that the milligram for milligram potency relationship among all dosage forms has not been precisely established clinically. It is important to increase dosage until symptoms are controlled. Dosage should be increased more gradually in debilitated or emaciated patients. In continued therapy, gradually reduce dosage to the lowest effective maintenance level, after symptoms have been controlled for a reasonable period.
Increase parenteral dosage only if hypotension has not occurred. Before using IM, see . Important Notes On Injection
ELDERLY PATIENTS
In general, dosages in the lower range are sufficient for most elderly patients. Since they appear to be more susceptible to hypotension and neuromuscular reactions, such patients should be observed closely. Dosage should be tailored to the individual, response carefully monitored, and dosage adjusted accordingly. Dosage should be increased more gradually in elderly patients.
PSYCHOTIC DISORDERS
Increase dosage gradually until symptoms are controlled. Maximum improvement may not be seen for weeks or even months. Continue optimum dosage for 2 weeks; then gradually reduce dosage to the lowest effective maintenance level. Daily dosage of 200 mg is not unusual. Some patients require higher dosages (e.g., 800 mg daily is not uncommon in discharged mental patients).
Hospitalized Patients: Acute Schizophrenic or Manic States
25 mg (1 mL). If necessary, give additional 25 to 50 mg injection in 1 hour. Increase subsequent IM doses gradually over several days–up to 400 mg q4-6h in exceptionally severe cases–until patient is controlled. Usually the patient becomes quiet and cooperative within 24 to 48 hours and oral doses may be substituted. IM:
Prompt Control of Severe Symptoms
25 mg (1 mL). If necessary, repeat in 1 hour. Subsequent doses should be oral, 25-50 mg tid. IM:
NAUSEA AND VOMITING
25 mg (1 mL). If no hypotension occurs, give 25 to 50 mg q3-4h prn, until vomiting stops. Then switch to oral dosage. IM:
During Surgery
12.5 mg (0.5 mL). Repeat in 1 2 hour if necessary and if no hypotension occurs. 2 mg per fractional injection, at 2-minute intervals. Do not exceed 25 mg. Dilute to 1 mg mL, i.e., 1 mL (25 mg) mixed with 24 mL of saline. IM:/IV:/
PRESURGICAL APPREHENSION
: 12.5 to 25 mg (0.5-1 mL), 1 to 2 hours before operation. IM
INTRACTABLE HICCUPS
If symptoms persist for 2-3 days after trial with oral therapy, give 25 to 50 mg (1-2 mL) IM. Should symptoms persist, use IV infusion with patient flat in bed: 25 to 50 mg (1-2 mL) in 500 to 1000 mL of saline. Follow blood pressure closely. slow
ACUTE INTERMITTENT PORPHYRIA
: 25 mg (1 mL) tid or qid until patient can take oral therapy. IM
TETANUS
:25 to 50 mg (1-2 mL) given 3 or 4 times daily, usually in conjunction with barbiturates. Total doses and frequency of administration must be determined by the patient’s response, starting with low doses and increasing gradually. 25 to 50 mg (1-2 mL). Dilute to at least 1 mg per mL and administer at a rate of 1 mg per minute. IMIV:
Pediatric Patients (6 months to 12 years of age)
Chlorpromazine should generally not be used in pediatric patients under 6 months of age except where potentially lifesaving. It should not be used in conditions for which specific pediatric dosages have not been established.
SEVERE BEHAVIORAL PROBLEMS
Outpatients
Select route of administration according to severity of patient’s condition and increase dosage gradually as required. 1 4 mg lb body weight q6-8h, prn. IM://
Hospitalized Patients
As with outpatients, start with low doses and increase dosage gradually. In severe behavior disorders, higher dosages (50-100 mg daily, and in older children, 200 mg daily or more) may be necessary. There is little evidence that behavior improvement in severely disturbed mentally retarded patients is further enhanced by doses beyond 500 mg per day. Patients up to 5 years (or 50 lbs.), not over 40 mg day;5-12 years (or 50-100 lbs.), not over 75 mg day except in unmanageable cases. Maximum IM Dosage://
NAUSEA AND VOMITING
Dosage and frequency of administration should be adjusted according to the severity of the symptoms and response of the patient. The duration of activity following intramuscular administration may last up to 12 hours. Subsequent doses may be given by the same route if necessary. 1 4 mg lb body weight q6-8h, prn. Pediatric patients 6 months to 5 years (or 50 lbs.), not over 40 mg day; 5-12 years (or 50-100 lbs.), not over 75 mg day except in severe cases. IM://Maximum IM Dosage://
During Surgery
1 8 mg lb body weight. Repeat in 1 2 hour if necessary and if no hypotension occurs. 1 mg per fractional injection at 2-minute intervals and not exceeding recommended IM dosage. Always dilute to 1 mg mL, i.e., 1 mL (25 mg) mixed with 24 mL of saline. IM:///IV:/
PRESURGICAL APPREHENSION
1 4 mg lb body weight 1 to 2 hours before operation. //IM
TETANUS
1 4 mg lb body weight q6-8h. When given IV, dilute to at least 1 mg mL and administer at a rate of 1 mg per 2 minutes. In patients up to 50 lbs., do not exceed 40 mg daily; 50 to 100 lbs., do not exceed 75 mg except in severe cases. IM or IV:///
Important Notes on Injection
Inject slowly, deep into upper outer quadrant of buttock.
Because of possible hypotensive effects, reserve parenteral administration for bedfast patients or for acute ambulatory cases, and keep patient lying down for at least 1 2 hour after injection. If irritation is a problem, dilute injection with saline or 2% procaine; mixing with other agents in the syringe is not recommended. Subcutaneous injection is not advised. AVOID INJECTING UNDILUTED CHLORPROMAZINE HYDROCHLORIDE INJECTION INTO VEIN. IV ROUTE IS ONLY FOR SEVERE HICCUPS, SURGERY AND TETANUS. /
Because of the possibility of contact dermatitis, avoid getting solution on hands or clothing.
Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration, whenever solution and container permit.
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Lisinopril
Hypertension
In patients with uncomplicated essential hypertension not on diuretic therapy, the recommended initial dose is 10 mg once a day. Dosage should be adjusted according to blood pressure response. The usual dosage range is 20 to 40 mg per day administered in a single daily dose. The antihypertensive effect may diminish toward the end of the dosing interval regardless of the administered dose, but most commonly with a dose of 10 mg daily. This can be evaluated by measuring blood pressure just prior to dosing to determine whether satisfactory control is being maintained for 24 hours. If it is not, an increase in dose should be considered. Doses up to 80 mg have been used but do not appear to give greater effect. If blood pressure is not controlled with lisinopril tablet alone, a low dose of a diuretic may be added. Hydrochlorothiazide, 12.5 mg has been shown to provide an additive effect. After the addition of a diuretic, it may be possible to reduce the dose of lisinopril. Initial Therapy:
In hypertensive patients who are currently being treated with a diuretic, symptomatic hypotension may occur occasionally following the initial dose of lisinopril tablet. The diuretic should be discontinued, if possible, for two to three days before beginning therapy with lisinopril tablet to reduce the likelihood of hypotension (See ). The dosage of lisinopril tablet should be adjusted according to blood pressure response. If the patient's blood pressure is not controlled with lisinopril tablet alone, diuretic therapy may be resumed as described above. Diuretic Treated Patients:WARNINGS
If the diuretic cannot be discontinued, an initial dose of 5 mg should be used under medical supervision for at least two hours and until blood pressure has stabilized for at least an additional hour (See and ). WARNINGSPRECAUTIONS, Drug Interactions
Concomitant administration of lisinopril with potassium supplements, potassium salt substitutes, or potassium-sparing diuretics may lead to increases of serum potassium (See ). PRECAUTIONS
The usual dose of lisinopril tablet (10 mg) is recommended for patients with creatinine clearance > 30 mL/min (serum creatinine of up to approximately 3 mg/dL). For patients with creatinine clearance ≥ 10 mL/min ≤ 30 mL/min (serum creatinine ≥ 3 mg/dL), the first dose is 5 mg once daily. For patients with creatinine clearance < 10 mL/min (usually on hemodialysis) the recommended initial dose is 2.5 mg. The dosage may be titrated upward until blood pressure is controlled or to a maximum of 40 mg daily. Dosage Adjustment in Renal Impairment:
* See WARNINGS, Anaphylactoid Reactions During Membrane Exposure. † Dosage or dosing interval should be adjusted depending on the blood pressure response. Renal Status Creatinine Clearance mL/min Initial Dose mg/day Normal Renal Function to Mild Impairment >30 10 Moderate to Severe Impairment ≥10 ≤30 5 Dialysis Patients * <10 2.5 †Lisinopril tablet is indicated as adjunctive therapy with diuretics and (usually) digitalis. The recommended starting dose is 5 mg once a day. When initiating treatment with lisinopril in patients with heart failure, the initial dose should be administered under medical observation, especially in those patients with low blood pressure (systolic blood pressure below 100 mmHg). The mean peak blood pressure lowering occurs six to eight hours after dosing. Observation should continue until blood pressure is stable. The concomitant diuretic dose should be reduced, if possible, to help minimize hypovolemia which may contribute to hypotension. (See and ). The appearance of hypotension after the initial dose of lisinopril tablet does not preclude subsequent careful dose titration with the drug, following effective management of the hypotension. Heart Failure:WARNINGSPRECAUTIONS, Drug Interactions
The usual effective dosage range is 5 to 40 mg per day administered as a single daily dose. The dose of lisinopril can be increased by increments of no greater than 10 mg, at intervals of no less than 2 weeks to the highest tolerated dose, up to a maximum of 40 mg daily. Dose adjustment should be based on the clinical response of individual patients.
In patients with heart failure who have hyponatremia (serum sodium < 130 mEq/L) or moderate to severe renal impairment (creatinine clearance ≤ 30 mL/min or serum creatinine > 3 mg/dL), therapy with lisinopril should be initiated at a dose of 2.5 mg once a day under close medical supervision. (See and ). Dosage Adjustment in Patients with Heart Failure and Renal Impairment or Hyponatremia:WARNINGSPRECAUTIONS, Drug Interactions
In hemodynamically stable patients within 24 hours of the onset of symptoms of acute myocardial infarction, the first dose of lisinopril is 5 mg given orally, followed by 5 mg after 24 hours, 10 mg after 48 hours and then 10 mg of lisinopril once daily. Dosing should continue for six weeks. Patients should receive, as appropriate, the standard recommended treatments such as thrombolytics, aspirin, and beta-blockers. Acute Myocardial Infarction:
Patients with a low systolic blood pressure (≤ 120 mmHg) when treatment is started or during the first 3 days after the infarct should be given a lower 2.5 mg oral dose of lisinopril (see ). If hypotension occurs (systolic blood pressure ≤ 100 mmHg) a daily maintenance dose of 5 mg may be given with temporary reductions to 2.5 mg if needed. If prolonged hypotension occurs (systolic blood pressure < 90 mmHg for more than 1 hour) lisinopril should be withdrawn. For patients who develop symptoms of heart failure, see . WARNINGSDOSAGE AND ADMINISTRATION, Heart Failure
In acute myocardial infarction, treatment with lisinopril should be initiated with caution in patients with evidence of renal dysfunction, defined as serum creatinine concentration exceeding 2 mg/dL. No evaluation of dosing adjustments in myocardial infarction patients with severe renal impairment has been performed. Dosage Adjustment in Patients With Myocardial Infarction with Renal Impairment:
In general, the clinical response was similar in younger and older patients given similar doses of lisinopril. Pharmacokinetic studies, however, indicate that maximum blood levels and area under the plasma concentration time curve (AUC) are doubled in older patients, so that dosage adjustments should be made with particular caution. Use in Elderly:
The usual recommended starting dose is 0.07 mg/kg once daily (up to 5 mg total). Dosage should be adjusted according to blood pressure response. Doses above 0.61 mg/kg (or in excess of 40 mg) have not been studied in pediatric patients. (See and ). Pediatric Hypertensive Patients ≥ 6 years of age:CLINICAL PHARMACOLOGY, Pharmacokinetics and MetabolismPharmacodynamics and Clinical Effects
Lisinopril is not recommend in pediatric patients < 6 years or in pediatric patients with glomerular filtration rate < 30 mL/min/1.73 m (see and and ). 2CLINICAL PHARMACOLOGY, Pharmacokinetics and MetabolismPharmacodynamics and Clinical EffectsPRECAUTIONS
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Escitalopram
Escitalopram tablets should be administered once daily, in the morning or evening, with or without food.
2.1 Major Depressive Disorder
Initial Treatment
Adolescents
The recommended dose of escitalopram tablets is 10 mg once daily. A flexible-dose trial of escitalopram (10 mg/day to 20 mg/day) demonstrated the effectiveness of escitalopram [ ]. If the dose is increased to 20 mg, this should occur after a minimum of 3 weeks. seeClinical Studies(14.1)
Adults
The recommended dose of escitalopram tablets is 10 mg once daily. A fixed dose trial of escitalopram demonstrated the effectiveness of both 10 mg and 20 mg of escitalopram, but failed to demonstrate a greater benefit of 20 mg over 10 mg [ ]. If the dose is increased to 20 mg, this should occur after a minimum of one week. seeClinical Studies(14.1)
Maintenance Treatment
It is generally agreed that acute episodes of major depressive disorder require several months or longer of sustained pharmacological therapy beyond response to the acute episode. Systematic evaluation of continuing escitalopram 10 mg/day or 20 mg/day in adult patients with major depressive disorder who responded while taking escitalopram during an 8-week, acute-treatment phase demonstrated a benefit of such maintenance treatment [ ]. Nevertheless, the physician who elects to use escitalopram for extended periods should periodically reevaluate the long-term usefulness of the drug for the individual patient. Patients should be periodically reassessed to determine the need for maintenance treatment. seeClinical Studies(14.1)
2.2 Generalized Anxiety Disorder
Initial Treatment
Adults
The recommended starting dose of escitalopram tablets is 10 mg once daily. If the dose is increased to 20 mg, this should occur after a minimum of one week.
Maintenance Treatment
Generalized anxiety disorder is recognized as a chronic condition. The efficacy of escitalopram in the treatment of GAD beyond 8 weeks has not been systematically studied. The physician who elects to use escitalopram for extended periods should periodically reevaluate the long-term usefulness of the drug for the individual patient.
2.3 Special Populations
10 mg/day is the recommended dose for most elderly patients and patients with hepatic impairment.
No dosage adjustment is necessary for patients with mild or moderate renal impairment. Escitalopram should be used with caution in patients with severe renal impairment.
2.4 Discontinuation of Treatment with Escitalopram Tablets
Symptoms associated with discontinuation of escitalopram tablets and other SSRIs and SNRIs have been reported [ ]. Patients should be monitored for these symptoms when discontinuing treatment. A gradual reduction in the dose rather than abrupt cessation is recommended whenever possible. If intolerable symptoms occur following a decrease in the dose or upon discontinuation of treatment, then resuming the previously prescribed dose may be considered. Subsequently, the physician may continue decreasing the dose but at a more gradual rate. seeWarnings and Precautions(5.3)
2.5 Switching Patients To or From a Monoamine Oxidase Inhibitor
At least 14 days should elapse between discontinuation of an MAOI and initiation of escitalopram therapy. Similarly, at least 14 days should be allowed after stopping escitalopram tablets before starting an MAOI [ ]. seeContraindications(4.1) andWarnings and Precautions(5.10)
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Warfarin Sodium
2.1 Individualized Dosing
The dosage and administration of warfarin sodium must be individualized for each patient according to the patient’s INR response to the drug. Adjust the dose based on the patient’s INR and the condition being treated. Consult the latest evidence-based clinical practice guidelines from the American College of Chest Physicians (ACCP) to assist in the determination of the duration and intensity of anticoagulation with warfarin sodium [see References ( )]. 15
2.2 Recommended Target INR Ranges and Durations for Individual Indications
An INR of greater than 4 appears to provide no additional therapeutic benefit in most patients and is associated with a higher risk of bleeding.
Venous Thromboembolism (including deep venous thrombosis [DVT] and PE)
Adjust the warfarin dose to maintain a target INR of 2.5 (INR range, 2 to 3) for all treatment durations. The duration of treatment is based on the indication as follows:
For patients with a DVT or PE secondary to a transient (reversible) risk factor, treatment with warfarin for 3 months is recommended. For patients with an unprovoked DVT or PE, treatment with warfarin is recommended for at least 3 months. After 3 months of therapy, evaluate the risk-benefit ratio of long-term treatment for the individual patient. For patients with two episodes of unprovoked DVT or PE, long-term treatment with warfarin is recommended. For a patient receiving long-term anticoagulant treatment, periodically reassess the risk-benefit ratio of continuing such treatment in the individual patient.Atrial Fibrillation
In patients with non-valvular AF, anticoagulate with warfarin to target INR of 2.5 (range, 2 to 3).
In patients with non-valvular AF that is persistent or paroxysmal and at high risk of stroke (i.e., having any of the following features: prior ischemic stroke, transient ischemic attack, or systemic embolism, or 2 of the following risk factors: age greater than 75 years, moderately or severely impaired left ventricular systolic function and/or heart failure, history of hypertension, or diabetes mellitus), long-term anticoagulation with warfarin is recommended. In patients with non-valvular AF that is persistent or paroxysmal and at an intermediate risk of ischemic stroke (i.e., having 1 of the following risk factors: age greater than 75 years, moderately or severely impaired left ventricular systolic function and/or heart failure, history of hypertension, or diabetes mellitus), long-term anticoagulation with warfarin is recommended. For patients with AF and mitral stenosis, long-term anticoagulation with warfarin is recommended. For patients with AF and prosthetic heart valves, long-term anticoagulation with warfarin is recommended; the target INR may be increased and aspirin added depending on valve type and position, and on patient factors.Mechanical and Bioprosthetic Heart Valves
For patients with a bileaflet mechanical valve or a Medtronic Hall (Minneapolis, MN) tilting disk valve in the aortic position who are in sinus rhythm and without left atrial enlargement, therapy with warfarin to a target INR of 2.5 (range, 2 to 3) is recommended. For patients with tilting disk valves and bileaflet mechanical valves in the mitral position, therapy with warfarin to a target INR of 3 (range, 2.5 to3.5) is recommended. For patients with caged ball or caged disk valves, therapy with warfarin to a target INR of 3 (range, 2.5 to3.5) is recommended. For patients with a bioprosthetic valve in the mitral position, therapy with warfarin to a target INR of 2.5 (range, 2 to 3) for the first 3 months after valve insertion is recommended. If additional risk factors for thromboembolism are present (AF, previous thromboembolism, left ventricular dysfunction), a target INR of 2.5 (range, 2 to 3) is recommended.Post-Myocardial Infarction
For high-risk patients with MI (e.g., those with a large anterior MI, those with significant heart failure, those with intracardiac thrombus visible on transthoracic echocardiography, those with AF, and those with a history of a thromboembolic event), therapy with combined moderate-intensity (INR, 2 to 3) warfarin plus low-dose aspirin (≤ 100 mg/day) for at least 3 months after the MI is recommended.Recurrent Systemic Embolism and Other Indications
Oral anticoagulation therapy with warfarin has not been fully evaluated by clinical trials in patients with valvular disease associated with AF, patients with mitral stenosis, and patients with recurrent systemic embolism of unknown etiology. However, a moderate dose regimen (INR 2 to3) may be used for these patients.
2.3 Initial and Maintenance Dosing
The appropriate initial dosing of warfarin sodium varies widely for different patients. Not all factors responsible for warfarin dose variability are known, and the initial dose is influenced by:
Clinical factors including age, race, body weight, sex, concomitant medications, and comorbidities Genetic factors (CYP2C9 and VKORC1 genotypes) [see Clinical Pharmacology ( )] 12.5Select the initial dose based on the expected maintenance dose, taking into account the above factors. Modify this dose based on consideration of patient-specific clinical factors. Consider lower initial and maintenance doses for elderly and/or debilitated patients and in Asian patients [see and Routine use of loading doses is not recommended as this practice may increase hemorrhagic and other complications and does not offer more rapid protection against clot formation. Use in Specific Populations ( ) 8.5Clinical Pharmacology ( )]. 12.3
Individualize the duration of therapy for each patient. In general, anticoagulant therapy should be continued until the danger of thrombosis and embolism has passed [see Dosage and Administration ( )]. 2.2
Dosing Recommendations without Consideration of Genotype
If the patient’s CYP2C9 and VKORC1 genotypes are not known, the initial dose of warfarin sodium is usually 2 to 5 mg once daily. Determine each patient’s dosing needs by close monitoring of the INR response and consideration of the indication being treated. Typical maintenance doses are 2 to 10 mg once daily.
Dosing Recommendations with Consideration of Genotype
Table 1 displays three ranges of expected maintenance warfarin sodium doses observed in subgroups of patients having different combinations of CYP2C9 and VKORC1 gene variants [see If the patient’s CYP2C9 and/or VKORC1 genotype are known, consider these ranges in choosing the initial dose. Patients with CYP2C9 *1/*3, *2/*2, *2/*3, and *3/*3 may require more prolonged time (> 2 to 4 weeks) to achieve maximum INR effect for a given dosage regimen than patients without these CYP variants. Clinical Pharmacology ( )]. 12.5
Table 1Three Ranges of Expected Maintenance Warfarin Sodium Daily Doses Based on CYP2C9 and VKORC1 Genotypes †Ranges are derived from multiple published clinical studies. VKORC1 −1639G>A (rs9923231) variant is used in this table. Other co-inherited VKORC1 variants may also be important determinants of warfarin dose. †
CYP2C9 VKORC1 *1/*1 *1/*2 *1/*3 *2/*2 *2/*3 *3/*3 GG 5 to7 mg 5 to 7 mg 3 to 4 mg 3 to 4 mg 3 to 4 mg 0.5 to 2 mg AG 5 to 7 mg 3 to 4 mg 3 to 4 mg 3 to 4 mg 0.5 to 2 mg 0.5 to 2 mg AA 3 to 4 mg 3 to 4 mg 0.5 to 2 mg 0.5 to 2 mg 0.5 to 2 mg 0.5 to 2 mg2.4 Monitoring to Achieve Optimal Anticoagulation
Warfarin sodium is a narrow therapeutic range (index) drug, and its action may be affected by factors such as other drugs and dietary vitamin K. Therefore, anticoagulation must be carefully monitored during warfarin sodium therapy. Determine the INR daily after the administration of the initial dose until INR results stabilize in the therapeutic range. After stabilization, maintain dosing within the therapeutic range by performing periodic INRs. The frequency of performing INR should be based on the clinical situation but generally acceptable intervals for INR determinations are 1 to 4 weeks. Perform additional INR tests when other warfarin products are interchanged with warfarin sodium, as well as whenever other medications are initiated, discontinued, or taken irregularly. Heparin, a common concomitant drug, increases the INR [see and Dosage and Administration ( ) 2.8Drug Interactions ( )]. 7
Determinations of whole blood clotting and bleeding times are not effective measures for monitoring of warfarin sodium therapy.
2.5 Missed Dose
The anticoagulant effect of warfarin sodium persists beyond 24 hours. If a patient misses a dose of warfarin sodium at the intended time of day, the patient should take the dose as soon as possible on the same day. The patient should not double the dose the next day to make up for a missed dose.
2.7 Treatment During Dentistry and Surgery
Some dental or surgical procedures may necessitate the interruption or change in the dose of warfarin sodium therapy. Consider the benefits and risks when discontinuing warfarin sodium even for a short period of time. Determine the INR immediately prior to any dental or surgical procedure. In patients undergoing minimally invasive procedures who must be anticoagulated prior to, during, or immediately following these procedures, adjusting the dosage of warfarin sodium to maintain the INR at the low end of the therapeutic range may safely allow for continued anticoagulation.
2.8 Conversion From Other Anticoagulants
Heparin
Since the full anticoagulant effect of warfarin sodium is not achieved for several days, heparin is preferred for initial rapid anticoagulation. During initial therapy with warfarin sodium, the interference with heparin anticoagulation is of minimal clinical significance. Conversion to warfarin sodium may begin concomitantly with heparin therapy or may be delayed 3 to 6 days. To ensure therapeutic anticoagulation, continue full dose heparin therapy and overlap warfarin sodium therapy with heparin for 4 to 5 days and until warfarin sodium has produced the desired therapeutic response as determined by INR, at which point heparin may be discontinued.
As heparin may affect the INR, patients receiving both heparin and warfarin sodium should have INR monitoring at least:
5 hours after the last intravenous bolus dose of heparin, or 4 hours after cessation of a continuous intravenous infusion of heparin, or 24 hours after the last subcutaneous heparin injection.Warfarin sodium may increase the activated partial thromboplastin time (aPTT) test, even in the absence of heparin. A severe elevation (> 50 seconds) in aPTT with an INR in the desired range has been identified as an indication of increased risk of postoperative hemorrhage.
Other Anticoagulants
Consult the labeling of other anticoagulants for instructions on conversion to warfarin sodium.
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Epipen Jr
Selection of the appropriate dosage strength (EpiPen 0.3 mg or EpiPen Jr 0.15 mg) is determined according to patient body weight.
• Patients greater than or equal to 30 kg (approximately 66 pounds or more): EpiPen 0.3 mg • Patients 15 to 30 kg (33 pounds to 66 pounds): EpiPen Jr 0.15 mgInject EpiPen or EpiPen Jr intramuscularly or subcutaneously into the anterolateral aspect of the thigh, through clothing if necessary.
Each EpiPen or EpiPen Jr contains a single dose of epinephrine for single-use injection. Since the doses of epinephrine delivered from EpiPen or EpiPen Jr are fixed, consider using other forms of injectable epinephrine if doses lower than 0.15 mg are deemed necessary.
The prescriber should carefully assess each patient to determine the most appropriate dose of epinephrine, recognizing the life-threatening nature of the reactions for which this drug is indicated. With severe persistent anaphylaxis, repeat injections with an additional EpiPen or EpiPen Jr may be necessary. More than two sequential doses of epinephrine should only be administered under direct medical supervision [ ]. see Warnings and Precautions (5.1)
The epinephrine solution in the clear window of the EpiPen Auto-Injector should be inspected visually for particulate matter and discoloration. Epinephrine is light sensitive and should be stored in the carrier tube provided to protect it from light [ ] see How Supplied/Storage and Handling (16.2).
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Naloxone Hydrochloride
Naloxone hydrochloride injection may be administered intravenously, intramuscularly, or subcutaneously. The most rapid onset of action is achieved by intravenous administration and it is recommended in emergency situations.
Since the duration of action of some opioids may exceed that of naloxone the patient should be kept under continued surveillance. Repeated doses of naloxone should be administered, as necessary.
Intravenous Infusion
Naloxone hydrochloride injection may be diluted for intravenous infusion in 0.9% sodium chloride or 5% dextrose injection. The addition of 2 mg of naloxone hydrochloride in 500 mL of either solution provides a concentration of 0.004 mg/mL. Mixtures should be used within 24 hours. After 24 hours, the remaining unused solution must be discarded. The rate of administration should be titrated in accordance with the patient’s response.
Naloxone hydrochloride injection should not be mixed with preparations containing bisulfite, metabisulfite, long-chain or high molecular weight anions, or any solution having an alkaline pH. No drug or chemical agent should be added to naloxone hydrochloride injection unless its effect on the chemical and physical stability of the solution has first been established.
General
Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration whenever solution and container permit.
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Metformin Hydrochloride
There is no fixed dosage regimen for the management of hyperglycemia in patients with type 2 diabetes with metformin or any other pharmacologic agent. Dosage of metformin must be individualized on the basis of both effectiveness and tolerance, while not exceeding the maximum recommended daily dose. The maximum recommended daily dose of metformin hydrochloride tablets, USP is 2550 mg in adults and 2000 mg in pediatric patients (10-16 years of age).
Metformin should be given in divided doses with meals and should be started at a low dose, with gradual dose escalation, both to reduce gastrointestinal side effects and to permit identification of the minimum dose required for adequate glycemic control of the patient.
During treatment initiation and dose titration (see ), fasting plasma glucose should be used to determine the therapeutic response to metformin and identify the minimum effective dose for the patient. Thereafter, glycosylated hemoglobin should be measured at intervals of approximately three months. Recommended Dosing ScheduleThe therapeutic goal should be to decrease both fasting plasma glucose and glycosylated hemoglobin levels to normal or near normal by using the lowest effective dose of metformin hydrochloride tablets, USP either when used as monotherapy or in combination with sulfonylureas or insulin.
Monitoring of blood glucose and glycosylated hemoglobin will also permit detection of primary failure, i.e., inadequate lowering of blood glucose at the maximum recommended dose of medication, and secondary failure, i.e., loss of an adequate blood glucose lowering response after an initial period of effectiveness.
Short-term administration of metformin may be sufficient during periods of transient loss of control in patients usually well-controlled on diet alone.
Recommended Dosing Schedule
Adults
In general, clinically significant responses are not seen at doses below 1500 mg per day. However, a lower recommended starting dose and gradually increased dosage is advised to minimize gastrointestinal symptoms.
The usual starting dose of metformin hydrochloride tablets, USP is 500 mg twice a day or 850 mg once a day, given with meals. Dosage increases should be made in increments of 500 mg weekly or 850 mg every 2 weeks, up to a total of 2000 mg per day, given in divided doses. Patients can also be titrated from 500 mg twice a day to 850 mg twice a day after 2 weeks. For those patients requiring additional glycemic control, metformin may be given to a maximum daily dose of 2550 mg per day. Doses above 2000 mg may be better tolerated given three times a day with meals.
Pediatrics
The usual starting dose of metformin hydrochloride tablets, USP is 500 mg twice a day, given with meals. Dosage increases should be made in increments of 500 mg weekly up to a maximum of 2000 mg per day, given in divided doses.
Transfer from Other Antidiabetic Therapy
When transferring patients from standard oral hypoglycemic agents other than chlorpropamide to metformin, no transition period generally is necessary. When transferring patients from chlorpropamide, care should be exercised during the first two weeks because of the prolonged retention of chlorpropamide in the body, leading to overlapping drug effects and possible hypoglycemia.
Concomitant Metformin Hydrochloride Tablets, USP and Oral Sulfonylurea Therapy in Adult Patients
If patients have not responded to four weeks of the maximum dose of metformin hydrochloride tablets, USP monotherapy, consideration should be given to gradual addition of an oral sulfonylurea while continuing metformin hydrochloride tablets, USP at the maximum dose, even if prior primary or secondary failure to a sulfonylurea has occurred. Clinical and pharmacokinetic drug-drug interaction data are currently available only for metformin plus glyburide (glibenclamide). With concomitant metformin hydrochloride tablets, USP and sulfonylurea therapy, the desired control of blood glucose may be obtained by adjusting the dose of each drug. In a clinical trial of patients with type 2 diabetes and prior failure on glyburide, patients started on metformin 500 mg and glyburide 20 mg were titrated to 1000/20 mg, 1500/20 mg, 2000/20 mg or 2500/20 mg of metformin and glyburide, respectively, to reach the goal of glycemic control as measured by FPG, HbA1c and plasma glucose response (see ). However, attempts should be made to identify the minimum effective dose of each drug to achieve this goal. With concomitant metformin hydrochloride tablets, USP and sulfonylurea therapy, the risk of hypoglycemia associated with sulfonylurea therapy continues and may be increased. Appropriate precautions should be taken. (See Package Insert of the respective sulfonylurea.) CLINICAL PHARMACOLOGY: Clinical Studies
If patients have not satisfactorily responded to one to three months of concomitant therapy with the maximum dose of metformin and the maximum dose of an oral sulfonylurea, consider therapeutic alternatives including switching to insulin with or without metformin hydrochloride tablets, USP.
Concomitant Metformin Hydrochloride Tablets, USP and Insulin Therapy in Adult Patients
The current insulin dose should be continued upon initiation of metformin hydrochloride tablets, USP therapy. Metformin hydrochloride tablets, USP therapy should be initiated at 500 mg once daily in patients on insulin therapy. For patients not responding adequately, the dose of metformin hydrochloride tablets, USP should be increased by 500 mg after approximately 1 week and by 500 mg every week thereafter until adequate glycemic control is achieved. The maximum recommended daily dose is 2500 mg for metformin hydrochloride tablets, USP. It is recommended that the insulin dose be decreased by 10% to 25% when fasting plasma glucose concentrations decrease to less than 120 mg/dL in patients receiving concomitant insulin and metformin hydrochloride tablets, USP. Further adjustment should be individualized based on glucose-lowering response.
Specific Patient Populations
Metformin is not recommended for use in pregnancy.
Metformin hydrochloride tablets, USP are not recommended in patients below the age of 10 years.
The initial and maintenance dosing of metformin hydrochloride tablets, USP should be conservative in patients with advanced age, due to the potential for decreased renal function in this population. Any dosage adjustment should be based on a careful assessment of renal function. Generally, elderly, debilitated, and malnourished patients should not be titrated to the maximum dose of metformin hydrochloride tablets, USP.
Monitoring of renal function is necessary to aid in prevention of lactic acidosis, particularly in the elderly. (See ) WARNINGS.
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Prednisone
Gastric irritation may be reduced if taken before, during, or immediately after meals or with food or milk.
The maximal activity of the adrenal cortex is between 2 am and 8 am, and it is minimal between 4 pm and midnight. Exogenous corticosteroids suppress adrenocorticoid activity the least when given at the time of maximal activity (am) for single dose administration. Therefore, it is recommended that prednisone be administered in the morning prior to 9 am and when large doses are given, administration of antacids between meals to help prevent peptic ulcers. Multiple dose therapy should be evenly distributed in evenly spaced intervals throughout the day.
Dietary salt restriction may be advisable in patients.
Do not stop taking this medicine without first talking to your doctor. Avoid abrupt withdraw of therapy.
The initial dosage of prednisone may vary from 5 mg to 60 mg per day, depending on the specific disease entity being treated. In situations of less severity lower doses will generally suffice, while in selected patients higher initial doses may be required. The initial dosage should be maintained or adjusted until a satisfactory response is noted. If after a reasonable period of time there is a lack of satisfactory clinical response, prednisone should be discontinued and the patient transferred to other appropriate therapy. After a favorable response is noted, the proper maintenance dosage should be determined by decreasing the initial drug dosage in small increments at appropriate time intervals until the lowest dosage which will maintain an adequate clinical response is reached. It should be kept in mind that constant monitoring is needed in regard to drug dosage. Included in the situations which may make dosage adjustments necessary are changes in clinical status secondary to remissions or exacerbations in the disease process, the patient’s individual drug responsiveness, and the effect of patient exposure to stressful situations not directly related to the disease entity under treatment; in this latter situation, it may be necessary to increase the dosage of prednisone for a period of time consistent with the patient’s condition. If after long-term therapy the drug is to be stopped, it is recommended that it be withdrawn gradually rather than abruptly. IT SHOULD BEEMPHASIZED THAT DOSAGE REQUIREMENTS ARE VARIABLE AND MUST BEINDIVIDUALIZED ON THE BASIS OF THE DISEASE UNDER TREATMENT AND THERESPONSE OF THE PATIENT.
Multiple Sclerosis
In the treatment of acute exacerbations of multiple sclerosis daily doses of 200 mg of prednisolone for a week followed by 80 mg every other day for 1 month have been shown to be effective. (Dosage range is the same for prednisone and prednisolone.)
Alternate Day Therapy
Alternate day therapy is a corticosteroid dosing regimen in which twice the usual daily dose of corticoid is administered every other morning. The purpose of this mode of therapy is to provide the patient requiring long-term pharmacologic dose treatment with the beneficial effects of corticoids while minimizing certain undesirable effects, including pituitary-adrenal suppression, the cushingoid state, corticoid withdrawal symptoms, and growth suppression in children.
The rationale for this treatment schedule is based on two major premises: (a) the anti-inflammatory or therapeutic effect of corticoids persists longer than their physical presence and metabolic effects and (b) administration of the corticosteroid every other morning allows for re-establishment of more nearly normal hypothalamic-pituitary-adrenal (HPA) activity on the off-steroid day.
A brief review of the HPA physiology may be helpful in understanding this rationale. Acting primarily through the hypothalamus a fall in free cortisol stimulates the pituitary gland to produce increasing amounts of corticotropin (ACTH) while a rise in free cortisol inhibits ACTH secretion. Normally the HPA system is characterized by diurnal (circadian) rhythm. Serum levels of ACTH rise from a low point about 10 pm to a peak level about 6 am. Increasing levels of ACTH stimulate adrenocortical activity resulting in a rise in plasma cortisol with maximal levels occurring between 2 am and 8 am. This rise in cortisol dampens ACTH production and in turn adrenocortical activity. There is a gradual fall in plasma corticoids during the day with lowest levels occurring about midnight.
The diurnal rhythm of the HPA axis is lost in Cushing’s disease, a syndrome of adrenocortical hyperfunction characterized by obesity with centripetal fat distribution, thinning of the skin with easy bruisability, muscle wasting with weakness, hypertension, latent diabetes, osteoporosis, electrolyte imbalance, etc. The same clinical findings of hyperadrenocorticism may be noted during long-term pharmacologic dose corticoid therapy administered in conventional daily divided doses. It would appear, then, that a disturbance in the diurnal cycle with maintenance of elevated corticoid values during the night may play a significant role in the development of undesirable corticoid effects. Escape from these constantly elevated plasma levels for even short periods of time may be instrumental in protecting against undesirable pharmacologic effects.
During conventional pharmacologic dose corticosteroid therapy, ACTH production is inhibited with subsequent suppression of cortisol production by the adrenal cortex. Recovery time for normal HPA activity is variable depending upon the dose and duration of treatment. During this time the patient is vulnerable to any stressful situation. Although it has been shown that there is considerably less adrenal suppression following a single morning dose of prednisolone (10 mg) as opposed to a quarter of that dose administered every 6 hours, there is evidence that some suppressive effect on adrenal activity may be carried over into the following day when pharmacologic doses are used. Further, it has been shown that a single dose of certain corticosteroids will produce adrenocortical suppression for two or more days. Other corticoids, including methylprednisolone, hydrocortisone, prednisone, and prednisolone, are considered to be short acting (producing adrenocortical suppression for 1 1/4 to 1 1/2 days following a single dose) and thus are recommended for alternate day therapy.
The following should be kept in mind when considering alternate day therapy:
Basic principles and indications for corticosteroid therapy should apply. The benefits ofalternate day therapy should not encourage the indiscriminate use of steroids. Alternate day therapy is a therapeutic technique primarily designed for patients in whom long-term pharmacologic corticoid therapy is anticipated. In less severe disease processes in which corticoid therapy is indicated, it may be possible to initiate treatment with alternate day therapy. More severe disease states usually will require daily divided high dose therapy for initial control of the disease process. The initial suppressive dose level should be continued until satisfactory clinical response is obtained, usually four to ten days in the case of many allergic and collagen diseases. It is important to keep the period of initial suppressive dose as brief as possible particularly when subsequent use of alternate day therapy is intended. Once control has been established, two courses are available: (a) change to alternate day therapy and then gradually reduce the amount of corticoid given every other day or (b) following control of the disease process reduce the daily dose of corticoid to the lowest effective level as rapidly as possible and then change over to an alternate day schedule. Theoretically, course (a) may be preferable. Because of the advantages of alternate day therapy, it may be desirable to try patients on this form of therapy who have been on daily corticoids for long periods of time (e.g., patients with rheumatoid arthritis). Since these patients may already have a suppressed HPA axis, establishing them on alternate day therapy may be difficult and not always successful. However, it is recommended that regular attempts be made to change them over. It may be helpful to triple or even quadruple the daily maintenance dose and administer this every other day rather than just doubling the daily dose if difficulty is encountered. Once the patient is again controlled, an attempt should be made to reduce this dose to a minimum. As indicated above, certain corticosteroids, because of their prolonged suppressive effect on adrenal activity, are not recommended for alternate day therapy (e.g., dexamethasone and betamethasone). The maximal activity of the adrenal cortex is between 2 am and 8 am, and it is minimal between 4 pm and midnight. Exogenous corticosteroids suppress adrenocortical activity the least, when given at the time of maximal activity (am). In using alternate day therapy it is important, as in all therapeutic situations to individualize and tailor the therapy to each patient. Complete control of symptoms will not be possible in all patients. An explanation of the benefits of alternate day therapy will help the patient to understand and tolerate the possible flare-up in symptoms which may occur in the latter part of the off-steroid day. Other symptomatic therapy may be added or increased at this time if needed. In the event of an acute flare-up of the disease process, it may be necessary to return to a full suppressive daily divided corticoid dose for control. Once control is again established alternate day therapy may be re-instituted. Although many of the undesirable features of corticosteroid therapy can be minimized by alternate day therapy, as in any therapeutic situation, the physician must carefully weigh the benefit-risk ratio for each patient in whom corticoid therapy is being considered. -
Promethazine Hydrochloride
Promethazine Hydrochloride Tablets USP are contraindicated for children under 2 years of age (seeWARNINGS-Black Box WarningandUse in Pediatric Patients).
Allergy
The average oral dose is 25 mg taken before retiring; however, 12.5 mg may be taken before meals and on retiring, if necessary. Single 25-mg doses at bedtime or 6.25 to 12.5 mg taken three times daily will usually suffice. After initiation of treatment in children or adults, dosage should be adjusted to the smallest amount adequate to relieve symptoms. The administration of promethazine HCl in 25-mg doses will control minor transfusion reactions of an allergic nature.
Motion Sickness
The average adult dose is 25 mg taken twice daily. The initial dose should be taken one-half to one hour before anticipated travel and be repeated 8 to 12 hours later, if necessary. On succeeding days of travel, it is recommended that 25 mg be given on arising and again before the evening meal. For children, promethazine hydrochloride tablets, syrup, or rectal suppositories, 12.5 to 25 mg twice daily, may be administered.
Nausea and Vomiting
Antiemetics should not be used in vomiting of unknown etiology in children and adolescents (see ). WARNINGS-Use in Pediatric Patients
The average effective dose of promethazine hydrochloride for the active therapy of nausea and vomiting in children or adults is 25 mg. When oral medication cannot be tolerated, the dose should be given parenterally (cf. Promethazine Injection) or by rectal suppository. 12.5- to 25-mg doses may be repeated, as necessary, at 4- to 6-hour intervals.
For nausea and vomiting in children, the usual dose is 0.5 mg per pound of body weight, and the dose should be adjusted to the age and weight of the patient and the severity of the condition being treated.
For prophylaxis of nausea and vomiting, as during surgery and the postoperative period, the average dose is 25 mg repeated at 4- to 6-hour intervals, as necessary.
Sedation
This product relieves apprehension and induces a quiet sleep from which the patient can be easily aroused. Administration of 12.5 to 25 mg promethazine hydrochloride by the oral route or by rectal suppository at bedtime will provide sedation in children. Adults usually require 25 to 50 mg for nighttime, presurgical, or obstetrical sedation.
Pre- and Postoperative Use
Promethazine hydrochloride in 12.5- to 25-mg doses for children and 50-mg doses for adults the night before surgery relieves apprehension and produces a quiet sleep.
For preoperative medication, children require doses of 0.5 mg per pound of body weight in combination with an appropriately reduced dose of narcotic or barbiturate and the appropriate dose of an atropine-like drug. Usual adult dosage is 50 mg promethazine HCl with an appropriately reduced dose of narcotic or barbiturate and the required amount of a belladonna alkaloid.
Postoperative sedation and adjunctive use with analgesics may be obtained by the administration of 12.5 to 25 mg in children and 25- to 50-mg doses in adults.
Promethazine hydrochloride tablets are contraindicated for children under 2 years of age.
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Propranolol Hydrochloride
General
Because of the variable bioavailability of propranolol, the dose should be individualized based on response.
Hypertension
The usual initial dosage is 40 mg propranolol hydrochloride twice daily, whether used alone or added to a diuretic. Dosage may be increased gradually until adequate blood pressure control is achieved. The usual maintenance dosage is 120 mg to 240 mg per day. In some instances a dosage of 640 mg a day may be required. The time needed for full antihypertensive response to a given dosage is variable and may range from a few days to several weeks.
While twice-daily dosing is effective and can maintain a reduction in blood pressure throughout the day, some patients, especially when lower doses are used, may experience a modest rise in blood pressure toward the end of the 12-hour dosing interval. This can be evaluated by measuring blood pressure near the end of the dosing interval to determine whether satisfactory control is being maintained throughout the day. If control is not adequate, a larger dose, or 3-times-daily therapy may achieve better control.
Angina Pectoris
Total daily doses of 80 mg to 320 mg propranolol hydrochloride when administered orally, twice a day, three times a day, or four times a day, have been shown to increase exercise tolerance and to reduce ischemic changes in the ECG. If treatment is to be discontinued, reduce dosage gradually over a period of several weeks. (See ) WARNINGS
Atrial Fibrillation
The recommended dose is 10 mg to 30 mg propranolol hydrochloride three or four times daily before meals and at bedtime.
Myocardial Infarction
In the Beta-Blocker Heart Attack Trial (BHAT), the initial dose was 40 mg t.i.d., with titration after 1- month to 60 mg to 80 mg t.i.d. as tolerated. The recommended daily dosage is 180 mg to 240 mg propranolol hydrochloride per day in divided doses. Although a t.i.d. regimen was used in BHAT and a q.i.d. regimen in the Norwegian Multicenter Trial, there is a reasonable basis for the use of either a t.i.d. or b.i.d. regimen (see The effectiveness and safety of daily dosages greater than 240 mg for prevention of cardiac mortality have not been established. However, higher dosages may be needed to effectively treat coexisting diseases such as angina or hypertension (see above). ). PHARMACODYNAMICS AND CLINICAL EFFECTS
Migraine
The initial dose is 80 mg propranolol hydrochloride daily in divided doses. The usual effective dose range is 160 mg to 240 mg per day. The dosage may be increased gradually to achieve optimum migraine prophylaxis. If a satisfactory response is not obtained within four to six weeks after reaching the maximum dose, propranolol hydrochloride therapy should be discontinued. It may be advisable to withdraw the drug gradually over a period of several weeks.
Essential Tremor
The initial dosage is 40 mg propranolol hydrochloride twice daily. Optimum reduction of essential tremor is usually achieved with a dose of 120 mg per day. Occasionally, it may be necessary to administer 240 mg to 320 mg per day.
Hypertrophic Subaortic Stenosis
The usual dosage is 20 mg to 40 mg propranolol hydrochloride three or four times daily before meals and at bedtime.
Pheochromocytoma
The usual dosage is 60 mg propranolol hydrochloride daily in divided doses for three days prior to surgery as adjunctive therapy to alpha-adrenergic blockade. For the management of inoperable tumors, the usual dosage is 30 mg daily in divided doses as adjunctive therapy to alpha-adrenergic blockade.
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Levetiracetam
2.1 Important Administration Instructions
Levetiracetam tablets are given orally with or without food. The levetiracetam dosing regimen depends on the indication, age group, dosage form (tablets or oral solution), and renal function.
Prescribe the oral solution for pediatric patients with body weight ≤ 20 kg. Prescribe the oral solution or tablets for pediatric patients with body weight above 20 kg.
Levetiracetam tablets should be swallowed whole. Levetiracetam tablets should not be chewed or crushed.
2.2 Partial Onset Seizures
Adults 16 Years and Older
In clinical trials, daily doses of 1000 mg, 2000 mg, and 3000 mg, given as twice-daily dosing were shown to be effective. Although in some studies there was a tendency toward greater response with higher dose , a consistent increase in response with increased dose has not been shown. [see CLINICAL STUDIES ( )] 14.1
Treatment should be initiated with a daily dose of 1000 mg/day, given as twice-daily dosing (500 mg twice daily). Additional dosing increments may be given (1000 mg/day additional every 2 weeks) to a maximum recommended daily dose of 3000 mg. Doses greater than 3000 mg/day have been used in open-label studies for periods of 6 months and longer. There is no evidence that doses greater than 3000 mg/day confer additional benefit.
Pediatric Patients
Dosing information in pediatric patients less than 4 years of age as adjunctive therapy in the treatment of partial onset seizures is approved for UCB, Inc.'s levetiracetam tablets. However, due to UCB, Inc.'s marketing exclusivity rights, this drug product is not labeled with that pediatric information.
4 Years to < 16 Years:
Treatment should be initiated with a daily dose of 20 mg/kg in 2 divided doses (10 mg/kg twice daily). The daily dose should be increased every 2 weeks by increments of 20 mg/kg to the recommended daily dose of 60 mg/kg (30 mg/kg twice daily). If a patient cannot tolerate a daily dose of 60 mg/kg, the daily dose may be reduced. In the clinical efficacy trial, the mean daily dose was 44 mg/kg. The maximum daily dose was 3000 mg/day.
For levetiracetam tablet dosing in pediatric patients weighing 20 to 40 kg, treatment should be initiated with a daily dose of 500 mg given as twice daily dosing (250 mg twice daily). The daily dose should be increased every 2 weeks by increments of 500 mg to a maximum recommended daily dose of 1500 mg (750 mg twice daily).
For levetiracetam tablet dosing in pediatric patients weighing more than 40 kg, treatment should be initiated with a daily dose of 1000 mg/day given as twice daily dosing (500 mg twice daily). The daily dose should be increased every 2 weeks by increments of 1000 mg/day to a maximum recommended daily dose of 3000 mg (1500 mg twice daily).
Levetiracetam Oral Solution Weight-Based Dosing Calculation For Pediatric Patients
The following calculation should be used to determine the appropriate daily dose of oral solution for pediatric patients:
2.3 Myoclonic Seizures in Patients 12 Years of Age and Older with Juvenile Myoclonic Epilepsy
Treatment should be initiated with a dose of 1000 mg/day, given as twice-daily dosing (500 mg twice daily). Dosage should be increased by 1000 mg/day every 2 weeks to the recommended daily dose of 3000 mg. The effectiveness of doses lower than 3000 mg/day has not been studied.
2.4 Primary Generalized Tonic-Clonic Seizures
Adults 16 Years and Older
Treatment should be initiated with a dose of 1000 mg/day, given as twice-daily dosing (500 mg twice daily). Dosage should be increased by 1000 mg/day every 2 weeks to the recommended daily dose of 3000 mg. The effectiveness of doses lower than 3000 mg/day has not been adequately studied.
Pediatric Patients Ages 6 to <16 Years
Treatment should be initiated with a daily dose of 20 mg/kg in 2 divided doses (10 mg/kg twice daily). The daily dose should be increased every 2 weeks by increments of 20 mg/kg to the recommended daily dose of 60 mg/kg (30 mg/kg twice daily). The effectiveness of doses lower than 60 mg/kg/day has not been adequately studied. Patients with body weight ≤ 20 kg should be dosed with oral solution. Patients with body weight above 20 kg can be dosed with either tablets or oral solution . Only whole tablets should be administered. [see DOSAGE AND ADMINISTRATION ( )] 2.1
2.5 Adult Patients with Impaired Renal Function
Levetiracetam tablets dosing must be individualized according to the patient's renal function status. Recommended doses and adjustment for dose for adults are shown in Table 1. In order to calculate the dose recommended for patients with renal impairment, creatinine clearance adjusted for body surface area must be calculated. To do this an estimate of the patient's creatinine clearance (CL ) in mL/min must first be calculated using the following formula: cr
Table 1: Dosing Adjustment Regimen for Adult Patients with Impaired Renal Function Group Creatinine Clearance (mL/min/1.73 m 2) Dosage (mg) Frequency * Following dialysis, a 250 to 500 mg supplemental dose is recommended. Normal >80 500 to 1,500 Every 12 hours Mild 50 to 80 500 to 1,000 Every 12 hours Moderate 30 to 50 250 to 750 Every 12 hours Severe <30 250 to 500 Every 12 hours ESRD patients using dialysis ----- 500 to 1000 * Every 24 hours * -
Topcare Tussin Dm Sugar Free Cough And Chest Congestion
Carefully consider the potential benefits and risks of ibuprofen tablets and other treatment options before deciding to use ibuprofen tablets. Use the lowest effective dose for the shortest duration consistent with individual patient treatment goals (see ). WARNINGS
After observing the response to initial therapy with ibuprofen tablets the dose and frequency should be adjusted to suit an individual patient's needs.
Do not exceed 3200 mg total daily dose. If gastrointestinal complaints occur, administer Ibuprofen Tablets, USP with meals or milk.
Rheumatoid arthritis and osteoarthritis, including flare-ups of chronic disease:
1200 mg-3200 mg daily (300 mg qid; 400 mg, 600 mg or 800 mg tid or qid). Suggested Dosage:
Individual patients may show a better response to 3200 mg daily, as compared with 2400 mg, although in well-controlled clinical trials patients on 3200 mg did not show a better mean response in terms of efficacy. Therefore, when treating patients with 3200 mg/day, the physician should observe sufficient increased clinical benefits to offset potential increased risk.
The dose should be tailored to each patient, and may be lowered or raised depending on the severity of symptoms either at time of initiating drug therapy or as the patient responds or fails to respond.
In general, patients with rheumatoid arthritis seem to require higher doses of ibuprofen tablets than do patients with osteoarthritis.
The smallest dose of ibuprofen tablets that yields acceptable control should be employed. A linear blood level dose-response relationship exists with single doses up to 800 mg (See for effects of food on rate of absorption). The availability of four tablet strengths facilitates dosage adjustment. CLINICAL PHARMACOLOGY
, a therapeutic response to therapy with ibuprofen tablets is sometimes seen in a few days to a week but most often is observed by two weeks. After a satisfactory response has been achieved, the patient's dose should be reviewed and adjusted as required. In chronic conditions
400 mg every 4 to 6 hours as necessary for relief of pain. Mild to moderate pain:
In controlled analgesic clinical trials, doses of ibuprofen tablets greater than 400 mg were no more effective than the 400 mg dose.
For the treatment of dysmenorrhea, beginning with the earliest onset of such pain, ibuprofen tablets should be given in a dose of 400 mg every 4 hours as necessary for the relief of pain. Dysmenorrhea:
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Sensai Cellular Performance
2.1 Schizophrenia
Dose Selection
GEODON Capsules should be administered at an initial daily dose of 20 mg twice daily with food. In some patients, daily dosage may subsequently be adjusted on the basis of individual clinical status up to 80 mg twice daily. Dosage adjustments, if indicated, should generally occur at intervals of not less than 2 days, as steady-state is achieved within 1 to 3 days. In order to ensure use of the lowest effective dose, patients should ordinarily be observed for improvement for several weeks before upward dosage adjustment.
Efficacy in schizophrenia was demonstrated in a dose range of 20 mg to 100 mg twice daily in short-term, placebo-controlled clinical trials. There were trends toward dose response within the range of 20 mg to 80 mg twice daily, but results were not consistent. An increase to a dose greater than 80 mg twice daily is not generally recommended. The safety of doses above 100 mg twice daily has not been systematically evaluated in clinical trials [ ]. see Clinical Studies (14.1)
Maintenance Treatment
While there is no body of evidence available to answer the question of how long a patient treated with ziprasidone should remain on it, a maintenance study in patients who had been symptomatically stable and then randomized to continue ziprasidone or switch to placebo demonstrated a delay in time to relapse for patients receiving Geodon [ ]. No additional benefit was demonstrated for doses above 20 mg twice daily. Patients should be periodically reassessed to determine the need for maintenance treatment. see Clinical Studies (14.1)
2.2 Bipolar I Disorder (Acute Mixed or Manic Episodes and Maintenance Treatment as an Adjunct to Lithium or Valproate)
Acute Treatment of Manic or Mixed Episodes
Dose Selection--Oral ziprasidone should be administered at an initial daily dose of 40 mg twice daily with food. The dose may then be increased to 60 mg or 80 mg twice daily on the second day of treatment and subsequently adjusted on the basis of tolerance and efficacy within the range 40 mg–80 mg twice daily. In the flexible-dose clinical trials, the mean daily dose administered was approximately 120 mg [ ]. see Clinical Studies (14.2)
Maintenance Treatment (as an adjunct to lithium or valproate)
Continue treatment at the same dose on which the patient was initially stabilized, within the range of 40 mg–80 mg twice daily with food. Patients should be periodically reassessed to determine the need for maintenance treatment [ ] see Clinical Studies (14.2).
2.3 Acute Treatment of Agitation in Schizophrenia
Intramuscular Dosing
The recommended dose is 10 mg to 20 mg administered as required up to a maximum dose of 40 mg per day. Doses of 10 mg may be administered every two hours; doses of 20 mg may be administered every four hours up to a maximum of 40 mg/day. Intramuscular administration of ziprasidone for more than three consecutive days has not been studied.
If long-term therapy is indicated, oral ziprasidone hydrochloride capsules should replace the intramuscular administration as soon as possible.
Since there is no experience regarding the safety of administering ziprasidone intramuscular to schizophrenic patients already taking oral ziprasidone, the practice of co-administration is not recommended.
Ziprasidone intramuscular is intended for intramuscular use only and should not be administered intravenously.
Intramuscular Preparation for Administration
GEODON for Injection (ziprasidone mesylate) should only be administered by intramuscular injection and should not be administered intravenously. Single-dose vials require reconstitution prior to administration.
Add 1.2 mL of Sterile Water for Injection to the vial and shake vigorously until all the drug is dissolved. Each mL of reconstituted solution contains 20 mg ziprasidone. To administer a 10 mg dose, draw up 0.5 mL of the reconstituted solution. To administer a 20 mg dose, draw up 1.0 mL of the reconstituted solution. Any unused portion should be discarded. Since no preservative or bacteriostatic agent is present in this product, aseptic technique must be used in preparation of the final solution. This medicinal product must not be mixed with other medicinal products or solvents other than Sterile Water for Injection. Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration, whenever solution and container permit.
2.4 Dosing in Special Populations
Dosage adjustments are generally not required on the basis of age, gender, race, or renal or hepatic impairment. Geodon is not approved for use in children or adolescents. Oral:
Ziprasidone intramuscular has not been systematically evaluated in elderly patients or in patients with hepatic or renal impairment. As the cyclodextrin excipient is cleared by renal filtration, ziprasidone intramuscular should be administered with caution to patients with impaired renal function. Dosing adjustments are not required on the basis of gender or race [ ]. Intramuscular:see Use in Specific Populations (8)
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Topcare Tussin Dm Max
Hypertension
The dosage of metoprolol tartrate tablets should be individualized. Metoprolol tartrate tablets should be taken with or immediately following meals.
The usual initial dosage of Metoprolol tartrate tablets is 100 mg daily in single or divided doses, whether used alone or added to a diuretic. The dosage may be increased at weekly (or longer) intervals until optimum blood pressure reduction is achieved. In general, the maximum effect of any given dosage level will be apparent after 1 week of therapy. The effective dosage range of Metoprolol tartrate tablets is 100 to 450 mg per day. Dosages above 450 mg per day have not been studied. While once-daily dosing is effective and can maintain a reduction in blood pressure throughout the day, lower doses (especially 100 mg) may not maintain a full effect at the end of the 24-hour period, and larger or more frequent daily doses may be required. This can be evaluated by measuring blood pressure near the end of the dosing interval to determine whether satisfactory control is being maintained throughout the day. Beta selectivity diminishes as the dose of metoprolol is increased. 1
Angina Pectoris
The dosage of metoprolol tartrate tablets should be individualized. Metoprolol tartrate tablets should be taken with or immediately following meals.
The usual initial dosage of Metoprolol tartrate tablets is 100 mg daily, given in two divided doses. The dosage may be gradually increased at weekly intervals until optimum clinical response has been obtained or there is pronounced slowing of the heart rate. The effective dosage range of Metoprolol tartrate tablets is 100 to 400 mg per day. Dosages above 400 mg per day have not been studied. If treatment is to be discontinued, the dosage should be reduced gradually over a period of 1 to 2 weeks (see ). WARNINGS
Myocardial Infarction
Early Treatment
During the early phase of definite or suspected acute myocardial infarction, treatment with metoprolol tartrate can be initiated as soon as possible after the patient’s arrival in the hospital. Such treatment should be initiated in a coronary care or similar unit immediately after the patient’s hemodynamic condition has stabilized.
Treatment in this early phase should begin with the intravenous administration of three bolus injections of 5 mg of metoprolol tartrate each; the injections should be given at approximately 2-minute intervals. During the intravenous administration of metoprolol, blood pressure, heart rate, and electrocardiogram should be carefully monitored.
In patients who tolerate the full intravenous dose (15 mg), metoprolol tartrate tablets, 50 mg every 6 hours, should be initiated 15 minutes after the last intravenous dose and continued for 48 hours. Thereafter, patients should receive a maintenance dosage of 100 mg twice daily (see below). Late Treatment
Patients who appear not to tolerate the full intravenous dose should be started on metoprolol tartrate tablets either 25 mg or 50 mg every 6 hours (depending on the degree of intolerance) 15 minutes after the last intravenous dose or as soon as their clinical condition allows. In patients with severe intolerance, treatment with metoprolol should be discontinued (see ). WARNINGS
Late Treatment
Patients with contraindications to treatment during the early phase of suspected or definite myocardial infarction, patients who appear not to tolerate the full early treatment, and patients in whom the physician wishes to delay therapy for any other reason should be started on metoprolol tartrate tablets, 100 mg twice daily, as soon as their clinical condition allows. Therapy should be continued for at least 3 months. Although the efficacy of metoprolol beyond 3 months has not been conclusively established, data from studies with other beta blockers suggest that treatment should be continued for 1 to 3 years.
Special populations
No pediatric studies have been performed. The safety and efficacy of Metoprolol Tartrate in pediatric patients have not been established. Pediatric patients:
No dose adjustment of Metoprolol Tartrate is required in patients with renal impairment. Renal impairment:
Metoprolol Tartrate blood levels are likely to increase substantially in patients with hepatic impairment. Therefore, Metoprolol Tartrate should be initiated at low doses with cautious gradual dose titration according to clinical response. Hepatic impairment:
In general, use a low initial starting dose in elderly patients given their greater frequency of decreased hepatic, renal, or cardiac function, and of concomitant disease or other drug therapy. Geriatric patients (>65 years):
Method of administration: the tablets should be swallowed un-chewed with a glass of water. Metoprolol Tartrate should always be taken in standardized relation with meals. If the physician asks the patient to take Metoprolol Tartrate either before breakfast or with breakfast, then the patient should continue taking Metoprolol Tartrate with the same schedule during the course of therapy. For oral treatment,
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Diclofenac
The usual dietary potassium intake by the average adult is 50 to 100 mEq per day. Potassium depletion sufficient to cause hypokalemia usually requires the loss of 200 or more mEq of potassium from the total body store.
Dosage must be adjusted to the individual needs of each patient. The dose for the prevention of hypokalemia is typically in the range of 20 mEq per day. Doses of 40-100 mEq per day or more are used for the treatment of potassium depletion. Dosage should be divided if more than 20 mEq per day is given such that no more than 20 mEq is given in a single dose.
Potassium chloride extended-release tablets provide 8 mEq, 10 mEq and 20 mEq of potassium chloride.
Potassium chloride extended-release tablets should be taken with meals and with a glass of water or other liquid. This product should not be taken on an empty stomach because of its potential for gastric irritation (see ). WARNINGS
Potassium chloride extended-release tablets are to be swallowed whole without crushing, chewing or sucking the tablets. NOTE:
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Tramadol Hydrochloride
Epilepsy
In the controlled add-on trials, no correlation has been demonstrated between trough plasma concentrations of topiramate and clinical efficacy. No evidence of tolerance has been demonstrated in humans. Doses above 400 mg/day (600, 800, or 1000 mg/day) have not been shown to improve responses in dose-response studies in adults with partial onset seizures.
It is not necessary to monitor topiramate plasma concentrations to optimize topiramate therapy. On occasion, the addition of topiramate to phenytoin may require an adjustment of the dose of phenytoin to achieve optimal clinical outcome. Addition or withdrawal of phenytoin and/or carbamazepine during adjunctive therapy with topiramate may require adjustment of the dose of topiramate. Because of the bitter taste, tablets should not be broken.
Topiramate tablets can be taken without regard to meals.
Monotherapy Use
The recommended dose for topiramate monotherapy in adults and children 10 years of age and older is 400 mg/day in two divided doses. Approximately 58% of patients randomized to 400 mg/day achieved this maximal dose in the monotherapy controlled trial; the mean dose achieved in the trial was 275 mg/day. The dose should be achieved by titrating according to the following schedule:
Morning Dose Evening Dose Week 1 25 mg 25 mg Week 2 50 mg 50 mg Week 3 75 mg 75 mg Week 4 100 mg 100 mg Week 5 150 mg 150 mg Week 6 200 mg 200 mgAdjunctive Therapy Use
Adults (17 Years of Age and Over) - Partial Seizures, Primary Generalized Tonic-Clonic Seizures, or Lennox-Gastaut Syndrome
The recommended total daily dose of topiramate as adjunctive therapy in adults with partial seizures is 200 to 400 mg/day in two divided doses, and 400 mg/day in two divided doses as adjunctive treatment in adults with primary generalized tonic-clonic seizures. It is recommended that therapy be initiated at 25 to 50 mg/day followed by titration to an effective dose in increments of 25 to 50 mg/week. Titrating in increments of 25 mg/week may delay the time to reach an effective dose. Daily doses above 1,600 mg have not been studied.
In the study of primary generalized tonic-clonic seizures the initial titration rate was slower than in previous studies; the assigned dose was reached at the end of 8 weeks (see ). CLINICAL STUDIES, Adjunctive Therapy Controlled Trials in Patients With Primary Generalized Tonic-Clonic Seizures
Pediatric Patients (Ages 2 to 16 Years)– Partial Seizures, Primary Generalized Tonic-Clonic Seizures, or Lennox-Gastaut Syndrome
The recommended total daily dose of topiramate as adjunctive therapy for patients with partial seizures, primary generalized tonic-clonic seizures, or seizures associated with Lennox-Gastaut syndrome is approximately 5 to 9 mg/kg/day in two divided doses. Titration should begin at 25 mg (or less, based on a range of 1 to 3 mg/kg/day) nightly for the first week. The dosage should then be increased at 1- or 2-week intervals by increments of 1 to 3 mg/kg/day (administered in two divided doses), to achieve optimal clinical response. Dose titration should be guided by clinical outcome.
In the study of primary generalized tonic-clonic seizures the initial titration rate was slower than in previous studies; the assigned dose of 6 mg/kg/day was reached at the end of 8 weeks (see ). CLINICAL STUDIES, Adjunctive Therapy Controlled Trials in Patients With Primary Generalized Tonic-Clonic Seizures
Patients with Renal Impairment:
In renally impaired subjects (creatinine clearance less than 70 mL/min/1.73 m ), one half of the usual adult dose is recommended. Such patients will require a longer time to reach steady-state at each dose. 2
Geriatric Patients (Ages 65 Years and Over):
Dosage adjustment may be indicated in the elderly patient when impaired renal function (creatinine clearance rate ≤70 mL/min/1.73 m ) is evident (see and ). 2DOSAGE AND ADMINISTRATION: Patients with Renal ImpairmentCLINICAL PHARMACOLOGY: Special Populations: Age, Gender, and Race
Patients Undergoing Hemodialysis:
Topiramate is cleared by hemodialysis at a rate that is 4 to 6 times greater than a normal individual. Accordingly, a prolonged period of dialysis may cause topiramate concentration to fall below that required to maintain an anti-seizure effect. To avoid rapid drops in topiramate plasma concentration during hemodialysis, a supplemental dose of topiramate may be required. The actual adjustment should take into account 1) the duration of dialysis period, 2) the clearance rate of the dialysis system being used, and 3) the effective renal clearance of topiramate in the patient being dialyzed.
Patients with Hepatic Disease:
In hepatically impaired patients topiramate plasma concentrations may be increased. The mechanism is not well understood.
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Allergena Zone 7
2.1 Individualized Dosing
The dosage and administration of warfarin sodium must be individualized for each patient according to the patient’s INR response to the drug. Adjust the dose based on the patient’s INR and the condition being treated. Consult the latest evidence-based clinical practice guidelines from the American College of Chest Physicians (ACCP) to assist in the determination of the duration and intensity of anticoagulation with warfarin sodium [ ]. see References (15)
2.2 Recommended Target INR Ranges and Durations for Individual Indications
An INR of greater than 4 appears to provide no additional therapeutic benefit in most patients and is associated with a higher risk of bleeding.
Venous Thromboembolism (including deep venous thrombosis [DVT] and PE)
Adjust the warfarin dose to maintain a target INR of 2.5 (INR range, 2 to 3) for all treatment durations. The duration of treatment is based on the indication as follows:
For patients with a DVT or PE secondary to a transient (reversible) risk factor, treatment with warfarin for 3 months is recommended. For patients with an unprovoked DVT or PE, treatment with warfarin is recommended for at least 3 months. After 3 months of therapy, evaluate the risk-benefit ratio of long-term treatment for the individual patient. For patients with two episodes of unprovoked DVT or PE, long-term treatment with warfarin is recommended. For a patient receiving long-term anticoagulant treatment, periodically reassess the risk-benefit ratio of continuing such treatment in the individual patient.Atrial Fibrillation
In patients with non-valvular AF, anticoagulate with warfarin to target INR of 2.5 (range, 2 to 3).
In patients with non-valvular AF that is persistent or paroxysmal and at high risk of stroke (i.e., having any of the following features: prior ischemic stroke, transient ischemic attack, or systemic embolism, or 2 of the following risk factors: age greater than 75 years, moderately or severely impaired left ventricular systolic function and/or heart failure, history of hypertension, or diabetes mellitus), long-term anticoagulation with warfarin is recommended. In patients with non-valvular AF that is persistent or paroxysmal and at an intermediate risk of ischemic stroke (i.e., having 1 of the following risk factors: age greater than 75 years, moderately or severely impaired left ventricular systolic function and/or heart failure, history of hypertension, or diabetes mellitus), long-term anticoagulation with warfarin is recommended. For patients with AF and mitral stenosis, long-term anticoagulation with warfarin is recommended. For patients with AF and prosthetic heart valves, long-term anticoagulation with warfarin is recommended; the target INR may be increased and aspirin added depending on valve type and position, and on patient factors.Mechanical and Bioprosthetic Heart Valves
For patients with a bileaflet mechanical valve or a Medtronic Hall (Minneapolis, MN) tilting disk valve in the aortic position who are in sinus rhythm and without left atrial enlargement, therapy with warfarin to a target INR of 2.5 (range, 2 to 3) is recommended. For patients with tilting disk valves and bileaflet mechanical valves in the mitral position, therapy with warfarin to a target INR of 3 (range, 2.5 to 3.5) is recommended. For patients with caged ball or caged disk valves, therapy with warfarin to a target INR of 3 (range, 2.5 to 3.5) is recommended. For patients with a bioprosthetic valve in the mitral position, therapy with warfarin to a target INR of 2.5 (range, 2 to 3) for the first 3 months after valve insertion is recommended. If additional risk factors for thromboembolism are present (AF, previous thromboembolism, left ventricular dysfunction), a target INR of 2.5 (range 2 to 3) is recommended.Post-Myocardial Infarction
For high-risk patients with MI (e.g., those with a large anterior MI, those with significant heart failure, those with intracardiac thrombus visible on transthoracic echocardiography, those with AF, and those with a history of a thromboembolic event), therapy with combined moderate-intensity (INR, 2 to 3) warfarin plus low-dose aspirin (≤ 100 mg/day) for at least 3 months after the MI is recommended.Recurrent Systemic Embolism and Other Indications
Oral anticoagulation therapy with warfarin has not been fully evaluated by clinical trials in patients with valvular disease associated with AF, patients with mitral stenosis, and patients with recurrent systemic embolism of unknown etiology. However, a moderate dose regimen (INR 2 to 3) may be used for these patients.
2.3 Initial and Maintenance Dosing
The appropriate initial dosing of warfarin sodium varies widely for different patients. Not all factors responsible for warfarin dose variability are known, and the initial dose is influenced by:
Clinical factors including age, race, body weight, sex, concomitant medications, and comorbidities Genetic factors (CYP2C9 and VKORC1 genotypes) [ ]. see Clinical Pharmacology (12.5)Select the initial dose based on the expected maintenance dose, taking into account the above factors. Modify this dose based on consideration of patient-specific clinical factors. Consider lower initial and maintenance doses for elderly and/or debilitated patients and in Asian patients [ ]. Routine use of loading doses is not recommended as this practice may increase hemorrhagic and other complications and does not offer more rapid protection against clot formation. see Use in Specific Populations (8.5) and Clinical Pharmacology (12.3)
Individualize the duration of therapy for each patient. In general, anticoagulant therapy should be continued until the danger of thrombosis and embolism has passed [ ]. see Dosage and Administration (2.2)
Dosage Recommendations without Consideration of Genotype
If the patient’s CYP2C9 and VKORC1 genotypes are not known, the initial dose of warfarin sodium is usually 2 to 5 mg once daily. Determine each patient’s dosing needs by close monitoring of the INR response and consideration of the indication being treated. Typical maintenance doses are 2 to 10 mg once daily.
Dosing Recommendations with Consideration of Genotype
displays three ranges of expected maintenance warfarin sodium doses observed in subgroups of patients having different combinations of CYP2C9 and VKORC1 gene variants [ ]. If the patient’s CYP2C9 and/or VKORC1 genotype are known, consider these ranges in choosing the initial dose. Patients with CYP2C9 *1/*3, *2/*2, *2/*3, and *3/*3 may require more prolonged time (> 2 to 4 weeks) to achieve maximum INR effect for a given dosage regimen than patients without these CYP variants. Table 1see Clinical Pharmacology (12.5)
Table 1: Three Ranges of Expected Maintenance Warfarin Sodium Daily Doses Based on
CYP2C9 and VKORC1 Genotypes †
VKORC1 CYP2C9 *1/*1 *1/*2 *1/*3 *2/*2 *2/*3 *3/*3 GG 5 to 7 mg 5 to 7 mg 3 to 4 mg 3 to 4 mg 3 to 4 mg 0.5 to 2 mg AG 5 to 7 mg 3 to 4 mg 3 to 4 mg 3 to 4 mg 0.5 to 2 mg 0.5 to 2 mg AA 3 to 4 mg 3 to 4 mg 0.5 to 2 mg 0.5 to 2 mg 0.5 to 2 mg 0.5 to 2 mgRanges are derived from multiple published clinical studies. VKORC1 -1639G > A (rs9923231) variant is used in this table. Other co-inherited VKORC1 variants may also be important determinants of warfarin dose. †
2.4Monitoring to Achieve Optimal Anticoagulation
Warfarin sodium is a narrow therapeutic range (index) drug, and its action may be affected by factors such as other drugs and dietary vitamin K. Therefore, anticoagulation must be carefully monitored during warfarin sodium therapy. Determine the INR daily after the administration of the initial dose until INR results stabilize in the therapeutic range. After stabilization, maintain dosing within the therapeutic range by performing periodic INRs. The frequency of performing INR should be based on the clinical situation but generally acceptable intervals for INR determinations are 1 to 4 weeks. Perform additional INR tests when other warfarin products are interchanged with warfarin sodium, as well as whenever other medications are initiated, discontinued, or taken irregularly. Heparin, a common concomitant drug, increases the INR [ ]. see Dosage and Administration (2.8) and Drug Interactions (7)
Determinations of whole blood clotting and bleeding times are not effective measures for monitoring of warfarin sodium therapy.
2.5 Missed Dose
The anticoagulant effect of warfarin sodium persists beyond 24 hours. If a patient misses a dose of warfarin sodium at the intended time of day, the patient should take the dose as soon as possible on the same day. The patient should not double the dose the next day to make up for a missed dose.
2.7 Treatment During Dentistry and Surgery
Some dental or surgical procedures may necessitate the interruption or change in the dose of warfarin sodium therapy. Consider the benefits and risks when discontinuing warfarin sodium even for a short period of time. Determine the INR immediately prior to any dental or surgical procedure. In patients undergoing minimally invasive procedures who must be anticoagulated prior to, during, or immediately following these procedures, adjusting the dosage of warfarin sodium to maintain the INR at the low end of the therapeutic range may safely allow for continued anticoagulation.
2.8 Conversion From Other Anticoagulants
Heparin
Since the full anticoagulant effect of warfarin sodium is not achieved for several days, heparin is preferred for initial rapid anticoagulation. During initial therapy with warfarin sodium, the interference with heparin anticoagulation is of minimal clinical significance. Conversion to warfarin sodium may begin concomitantly with heparin therapy or may be delayed 3 to 6 days. To ensure therapeutic anticoagulation, continue full dose heparin therapy and overlap warfarin sodium therapy with heparin for 4 to 5 days and until warfarin sodium has produced the desired therapeutic response as determined by INR, at which point heparin may be discontinued.
As heparin may affect the INR, patients receiving both heparin and warfarin sodium should have INR monitoring at least:
5 hours after the last intravenous bolus dose of heparin, or 4 hours after cessation of a continuous intravenous infusion of heparin, or 24 hours after the last subcutaneous heparin injection.Warfarin sodium may increase the activated partial thromboplastin time (aPTT) test, even in the absence of heparin. A severe elevation (> 50 seconds) in aPTT with an INR in the desired range has been identified as an indication of increased risk of postoperative hemorrhage.
Other Anticoagulants
Consult the labeling of other anticoagulants for instructions on conversion to warfarin sodium.
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Mesna
There is considerable variation from patient to patient in the amount of medication required for treatment. As with all antipsychotic drugs, dosage should be individualized according to the needs and response of each patient. Dosage adjustments, either upward or downward, should be carried out as rapidly as practicable to achieve optimum therapeutic control.
To determine the initial dosage, consideration should be given to the patient’s age, severity of illness, previous response to other antipsychotic drugs, and any concomitant medication or disease state. Children, debilitated or geriatric patients, as well as those with a history of adverse reactions to antipsychotic drugs, may require less haloperidol. The optimal response in such patients is usually obtained with more gradual dosage adjustments and at lower dosage levels, as recommended below.
Clinical experience suggests the following recommendations:
Oral Administration
Inital Dosage Range
Adults
Moderate Symptomatology - 0.5 mg to 2 mg b.i.d. or t.i.d.
Severe Symptomatology - 3 mg to 5 mg b.i.d. or t.i.d.
To achieve prompt control, higher doses may be required in some cases.
Geriatric or Debilitated Patients - 0.5 mg to 2 mg b.i.d. or t.i.d.
Chronic or Resistant Patients - 3 mg to 5 mg b.i.d. or t.i.d.
Patients who remain severely disturbed or inadequately controlled may require dosage adjustment. Daily dosages up to 100 mg may be necessary in some cases to achieve an optimal response. Infrequently haloperidol has been used in doses above 100 mg for severely resistant patients; however the limited clinical usage has not demonstrated the safety of prolonged administration of such doses.
Children
The following recommendations apply to children between the ages of 3 and 12 years (weight range 15 kg to 40 kg). Haloperidol is not intended for children under 3 years old. Therapy should begin at the lowest dose possible (0.5 mg per day). If required, the dose should be increased by an increment of 0.5 mg at 5 to 7 day intervals until the desired therapeutic effect is obtained. (See chart below.)
The total dose may be divided, to be given b.i.d. or t.i.d.
Psychotic Disorders - 0.05 mg/kg/day to 0.15 mg/kg/day
Nonpsychotic Behavior Disorders and Tourette's Disorder - 0.05 mg/kg/day to 0.075 mg/kg/day
Severely disturbed psychotic children may require higher doses. In severely disturbed, non-psychotic children or in hyperactive children with accompanying conduct disorders, who have failed to respond to psychotherapy or medications other than antipsychotics, it should be noted that since these behaviors may be short lived, short term administration of haloperidol may suffice. There is no evidence establishing a maximum effective dosage. There is little evidence that behavior improvement is further enhanced in dosages beyond 6 mg per day.
Maintenance Dosage
Upon achieving a satisfactory therapeutic response, dosage should then be gradually reduced to the lowest effective maintenance level.
Switchover Procedure
The oral form should supplant the injectable as soon as practicable. In the absence of bioavailability studies establishing bioequivalence between these two dosage forms the following guidelines for dosage are suggested. For an initial approximation of the total daily dose required, the parenteral dose administered in the preceding 24 hours may be used. Since this dose is only an initial estimate, it is recommended that careful monitoring of clinical signs and symptoms, including clinical efficacy, sedation, and adverse effects, be carried out periodically for the first several days following the initiation of switchover. In this way, dosage adjustments, either upward or downward, can be quickly accomplished. Depending on the patient’s clinical status, the first oral dose should be given within 12 to 24 hours following the last parenteral dose.
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Tramadol Hydrochloride
The recommended initial dose is 15 mg daily (7.5 mg b.i.d.). To achieve an optimal therapeutic response, at intervals of 2 to 3 days the dosage may be increased 5 mg per day, as needed. The maximum daily dosage should not exceed 60 mg per day. In clinical trials allowing dose titration, divided doses of 20 mg to 30 mg per day were commonly employed.
The bioavailability of buspirone is increased when given with food as compared to the fasted state (see ). Consequently, patients should take buspirone in a consistent manner with regard to the timing of dosing; either always with or always without food. CLINICAL PHARMACOLOGY
When buspirone is to be given with a potent inhibitor of CYP3A4 the dosage recommendations described in the : section should be followed. PRECAUTIONSDrug Interactions
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Metformin Hydrochloride
Haloperidol Decanoate Injection should be administered by deep intramuscular injection. A 21 gauge needle is recommended. The maximum volume per injection site should not exceed 3 mL. DO NOT ADMINISTER INTRAVENOUSLY.
Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration, whenever solution and container permit.
Haloperidol Decanoate Injection is intended for use in schizophrenic patients who require prolonged parenteral antipsychotic therapy. These patients should be previously stabilized on antipsychotic medication before considering a conversion to haloperidol decanoate. Furthermore, it is recommended that patients being considered for haloperidol decanoate therapy have been treated with, and tolerate well, short-acting haloperidol in order to reduce the possibility of an unexpected adverse sensitivity to haloperidol. Close clinical supervision is required during the initial period of dose adjustment in order to minimize the risk of overdosage or reappearance of psychotic symptoms before the next injection. During dose adjustment or episodes of exacerbation of symptoms of schizophrenia, haloperidol decanoate therapy can be supplemented with short-acting forms of haloperidol.
The dose of haloperidol decanoate should be expressed in terms of its haloperidol content. The starting dose of haloperidol decanoate should be based on the patient’s age, clinical history, physical condition, and response to previous antipsychotic therapy. The preferred approach to determining the minimum effective dose is to begin with lower initial doses and to adjust the dose upward as needed. For patients previously maintained on low doses of antipsychotics (e.g., up to the equivalent of 10 mg/day oral haloperidol), it is recommended that the initial dose of haloperidol decanoate be 10 to 15 times the previous daily dose in oral haloperidol equivalents; limited clinical experience suggests that lower initial doses may be adequate.
Initial Therapy
Conversion from oral haloperidol to haloperidol decanoate can be achieved by using an initial dose of haloperidol decanoate that is 10 to 20 times the previous daily dose in oral haloperidol equivalents.
In patients who are elderly, debilitated, or stable on low doses of oral haloperidol (e.g., up to the equivalent of 10 mg/day oral haloperidol), a range of 10 to 15 times the previous daily dose in oral haloperidol equivalents is appropriate for initial conversion.
In patients previously maintained on higher doses of antipsychotics for whom a low dose approach risks recurrence of psychiatric decompensation and in patients whose long-term use of haloperidol has resulted in a tolerance to the drug, 20 times the previous daily dose in oral haloperidol equivalents should be considered for initial conversion, with downward titration on succeeding injections.
The initial dose of haloperidol decanoate should not exceed 100 mg regardless of previous antipsychotic dose requirements. If, therefore, conversion requires more than 100 mg of haloperidol decanoate as an initial dose, that dose should be administered in two injections, i.e., a maximum of 100 mg initially followed by the balance in 3 to 7 days.
Maintenance Therapy
The maintenance dosage of haloperidol decanoate must be individualized with titration upward or downward based on therapeutic response. The usual maintenance range is 10 to 15 times the previous daily dose in oral haloperidol equivalents dependent on the clinical response of the patient.
HALOPERIDOL DECANOATE DOSING RECOMMENDATIONS
Patients
Monthly
1 Month st
Maintenance
Stabilized on low daily oral doses (up to 10 mg/day)
10 to 15 x Daily
Oral Dose
10 to 15 x Previous Daily
Oral Dose
Elderly or Debilitated
High dose
20 x Daily
Oral Dose
10 to 15 x Previous Daily
Oral Dose
Risk of relapse
Tolerant to oral haloperidol
Close clinical supervision is required during initiation and stabilization of haloperidol decanoate therapy. Haloperidol decanoate is usually administered monthly or every 4 weeks. However, variation in patient response may dictate a need for adjustment of the dosing interval as well as the dose (see ). CLINICAL PHARMACOLOGY
Clinical experience with haloperidol decanoate at doses greater than 450 mg per month has been limited.
Initial Therapy
Conversion from oral haloperidol to haloperidol decanoate can be achieved by using an initial dose of haloperidol decanoate that is 10 to 20 times the previous daily dose in oral haloperidol equivalents.
In patients who are elderly, debilitated, or stable on low doses of oral haloperidol (e.g., up to the equivalent of 10 mg/day oral haloperidol), a range of 10 to 15 times the previous daily dose in oral haloperidol equivalents is appropriate for initial conversion.
In patients previously maintained on higher doses of antipsychotics for whom a low dose approach risks recurrence of psychiatric decompensation and in patients whose long-term use of haloperidol has resulted in a tolerance to the drug, 20 times the previous daily dose in oral haloperidol equivalents should be considered for initial conversion, with downward titration on succeeding injections.
The initial dose of haloperidol decanoate should not exceed 100 mg regardless of previous antipsychotic dose requirements. If, therefore, conversion requires more than 100 mg of haloperidol decanoate as an initial dose, that dose should be administered in two injections, i.e., a maximum of 100 mg initially followed by the balance in 3 to 7 days.
Maintenance Therapy
The maintenance dosage of haloperidol decanoate must be individualized with titration upward or downward based on therapeutic response. The usual maintenance range is 10 to 15 times the previous daily dose in oral haloperidol equivalents dependent on the clinical response of the patient.
HALOPERIDOL DECANOATE DOSING RECOMMENDATIONS
Patients
Monthly
1 Month st
Maintenance
Stabilized on low daily oral doses (up to 10 mg/day)
10 to 15 x Daily
Oral Dose
10 to 15 x Previous Daily
Oral Dose
Elderly or Debilitated
High dose
20 x Daily
Oral Dose
10 to 15 x Previous Daily
Oral Dose
Risk of relapse
Tolerant to oral haloperidol
Close clinical supervision is required during initiation and stabilization of haloperidol decanoate therapy. Haloperidol decanoate is usually administered monthly or every 4 weeks. However, variation in patient response may dictate a need for adjustment of the dosing interval as well as the dose (see ). CLINICAL PHARMACOLOGY
Clinical experience with haloperidol decanoate at doses greater than 450 mg per month has been limited.
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Zonnic Nicotine Polacrilex
Dosage should be adjusted according to each patient's needs. It is recommended that nifedipine extended-release tablets be administered orally once daily on an empty stomach. Nifedipine extended-release tablet is an extended release dosage form and tablets should be swallowed whole, not bitten or divided. In general, titration should proceed over a 7 to14 day period starting with 30 mg once daily. Upward titration should be based on therapeutic efficacy and safety. The usual maintenance dose is 30 mg to 60 mg once daily. Titration to doses above 90 mg daily is not recommended.
If discontinuation of nifedipine extended-release tablets is necessary, sound clinical practice suggests that the dosage should be decreased gradually with close physician supervision.
Coadministration of nifedipine with grapefruit juice is to be avoided (see and ). CLINICAL PHARMACOLOGYPRECAUTIONS
Care should be taken when dispensing nifedipine extended-release tablets to assure that the extended-release dosage form has been prescribed.
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Zzz Sleep
While the recommended usual adult dose is 15 mg before retiring, 7.5 mg may be sufficient for some patients, and others may need 30 mg. In transient insomnia, a 7.5 mg dose may be sufficient to improve sleep latency. In elderly or debilitated patients, it is recommended that therapy be initiated with 7.5 mg until individual responses are determined.
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Allergy Relief
Citalopram HBr should be administered once daily, in the morning or evening, with or without food.
Initial Treatment
Citalopram HBr should be administered at an initial dose of 20 mg once daily, with an increase to a maximum dose of 40 mg/day at an interval of no less than one week. Doses above 40 mg/day are not recommended due to the risk of QT prolongation. Additionally, the only study pertinent to dose response for effectiveness did not demonstrate an advantage for the 60 mg/day dose over the 40 mg/day dose.
Special Populations
20 mg/day is the maximum recommended dose for patients who are greater than 60 years of age, patients with hepatic impairment, and for CYP2C19 poor metabolizers or those patients taking cimetidine or another CYP2C19 inhibitor. (see ) WARNINGS
No dosage adjustment is necessary for patients with mild or moderate renal impairment. Citalopram tablets should be used with caution in patients with severe renal impairment.
Treatment of Pregnant Women During the Third Trimester
Neonates exposed to Citalopram tablets and other SSRIs or SNRIs, late in the third trimester, have developed complications requiring prolonged hospitalization, respiratory support, and tube feeding (see ). When treating pregnant women with Citalopram tablets during the third trimester, the physician should carefully consider the potential risks and benefits of treatment. PRECAUTIONS
Maintenance Treatment
It is generally agreed that acute episodes of depression require several months or longer of sustained pharmacologic therapy. Systematic evaluation of Citalopram tablets in two studies has shown that its antidepressant efficacy is maintained for periods of up to 24 weeks following 6 or 8 weeks of initial treatment (32 weeks total). In one study, patients were assigned randomly to placebo or to the same dose of Citalopram tablets (20-60 mg/day) during maintenance treatment as they had received during the acute stabilization phase, while in the other study, patients were assigned randomly to continuation of Citalopram tablets 20 or 40 mg/day, or placebo, for maintenance treatment. In the latter study, the rates of relapse to depression were similar for the two dose groups (see under ). Based on these limited data, it is not known whether the dose of citalopram needed to maintain euthymia is identical to the dose needed to induce remission. If adverse reactions are bothersome, a decrease in dose to 20 mg/day can be considered. Clinical TrialsCLINICAL PHARMACOLOGY
Discontinuation of Treatment with Citalopram tablets
Symptoms associated with discontinuation of Citalopram tablets and other SSRIs and SNRIs have been reported (see ). Patients should be monitored for these symptoms when discontinuing treatment. A gradual reduction in the dose rather than abrupt cessation is recommended whenever possible. If intolerable symptoms occur following a decrease in the dose or upon discontinuation of treatment, then resuming the previously prescribed dose may be considered. Subsequently, the physician may continue decreasing the dose but at a more gradual rate. PRECAUTIONS
Switching a Patient To or From a Monoamine Oxidase Inhibitor (MAOI) Intended to Treat Psychiatric Disorders
At least 14 days should elapse between discontinuation of an MAOI intended to treat psychiatric disorders and initiation of therapy with Citalopram Hydrobromide tablet. Conversely, at least 14 days should be allowed after stopping Citalopram Hydrobromide tablet before starting an MAOI intended to treat psychiatric disorders (see ). CONTRAINDICATIONS
Use of Citalopram Hydrobromide tablet with Other MAOIs, Such as Linezolid or Methylene Blue
Do not start Citalopram Hydrobromide tablet in a patient who is being treated with linezolid or intravenous methylene blue because there is an increased risk of serotonin syndrome. In a patient who requires more urgent treatment of a psychiatric condition, other interventions, including hospitalization, should be considered (see ). CONTRAINDICATIONS
In some cases, a patient already receiving Citalopram Hydrobromide tablet therapy may require urgent treatment with linezolid or intravenous methylene blue. If acceptable alternatives to linezolid or intravenous methylene blue treatment are not available and the potential benefits of linezolid or intravenous methylene blue treatment are judged to outweigh the risks of serotonin syndrome in a particular patient, Citalopram Hydrobromide tablet should be stopped promptly, and linezolid or intravenous methylene blue can be administered. The patient should be monitored for symptoms of serotonin syndrome for 2 weeks or until 24 hours after the last dose of linezolid or intravenous methylene blue, whichever comes first. Therapy with Citalopram Hydrobromide tablet may be resumed 24 hours after the last dose of linezolid or intravenous methylene blue (see ). WARNINGS
The risk of administering methylene blue by non-intravenous routes (such as oral tablets or by local injection) or in intravenous doses much lower than 1 mg/kg with Citalopram Hydrobromide tablet is unclear. The clinician should, nevertheless, be aware of the possibility of emergent symptoms of serotonin syndrome with such use (see ). WARNINGS
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Ondansetron Hydrochloride
2.1 General Instructions for Use
To minimize the risk of seizure, increase the dose gradually . Increases in dose should not exceed 100 mg per day in a 3-day period. Bupropion hydrochloride tablets should be swallowed whole and not crushed, divided, or chewed. Bupropion hydrochloride tablets may be taken with or without food. [see Warnings and Precautions (5.3)]
The recommended starting dose is 200 mg per day, given as 100 mg twice daily. After 3 days of dosing, the dose may be increased to 300 mg per day, given as 100 mg 3 times daily, with at least 6 hours between successive doses. Dosing above 300 mg per day may be accomplished using the 75- or 100-mg tablets.
A maximum of 450 mg per day, given in divided doses of not more than 150 mg each, may be considered for patients who show no clinical improvement after several weeks of treatment at 300 mg per day. Administer the 100-mg tablet 4 times daily to not exceed the limit of 150 mg in a single dose.
It is generally agreed that acute episodes of depression require several months or longer of antidepressant drug treatment beyond the response in the acute episode. It is unknown whether the dose of bupropion hydrochloride tablets needed for maintenance treatment is identical to the dose that provided an initial response. Periodically reassess the need for maintenance treatment and the appropriate dose for such treatment.
2.2 Dose Adjustment in Patients With Hepatic Impairment
In patients with moderate to severe hepatic impairment (Child-Pugh score: 7 to15), the maximum dose of bupropion hydrochloride tablets is 75 mg per day. In patients with mild hepatic impairment (Child-Pugh score: 5 to 6), consider reducing the dose and/or frequency of dosing [see Use in Specific Populations (8.7) and Clinical Pharmacology (12.3)].
2.3 Dose Adjustment in Patients With Renal Impairment
Consider reducing the dose and/or frequency of bupropion hydrochloride tablets in patients with renal impairment (Glomerular Filtration Rate <90 mL/min) . [see Use in Specific Populations (8.6) and Clinical Pharmacology ( )] 12.3
2.4 Switching a Patient To or From a Monoamine Oxidase Inhibitor (MAOI) Antidepressant
At least 14 days should elapse between discontinuation of an MAOI intended to treat depression and initiation of therapy with bupropion hydrochloride tablets. Conversely, at least 14 days should be allowed after stopping bupropion hydrochloride tablets before starting an MAOI antidepressant . [see Contraindications ( ) and Drug Interactions ( 47.6)]
2.5 Use of Bupropion Hydrochloride Tablets With Reversible MAOIs Such as Linezolid or Methylene Blue
Do not start bupropion hydrochloride tablets in a patient who is being treated with a reversible MAOI such as linezolid or intravenous methylene blue. Drug interactions can increase the risk of hypertensive reactions. In a patient who requires more urgent treatment of a psychiatric condition, non-pharmacological interventions, including hospitalization, should be considered . [see Contraindications ( ) and Drug Interactions ( 47.6)]
In some cases, a patient already receiving therapy with bupropion hydrochloride tablets may require urgent treatment with linezolid or intravenous methylene blue. If acceptable alternatives to linezolid or intravenous methylene blue treatment are not available and the potential benefits of linezolid or intravenous methylene blue treatment are judged to outweigh the risks of hypertensive reactions in a particular patient, bupropion hydrochloride tablets should be stopped promptly, and linezolid or intravenous methylene blue can be administered. The patient should be monitored for 2 weeks or until 24 hours after the last dose of linezolid or intravenous methylene blue, whichever comes first. Therapy with bupropion hydrochloride tablets may be resumed 24 hours after the last dose of linezolid or intravenous methylene blue.
The risk of administering methylene blue by non-intravenous routes (such as oral tablets or by local injection) or in intravenous doses much lower than 1 mg/kg with bupropion hydrochloride tablets is unclear. The clinician should, nevertheless, be aware of the possibility of a drug interaction with such use . [see Contraindications ( ) and Drug Interactions ( 47.6)]
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Estradiol Valerate
2.1 Schizophrenia
— Oral olanzapine should be administered on a once-a-day schedule without regard to meals, generally beginning with 5 to 10 mg initially, with a target dose of 10 mg/day within several days. Further dosage adjustments, if indicated, should generally occur at intervals of not less than 1 week, since steady state for olanzapine would not be achieved for approximately 1 week in the typical patient. When dosage adjustments are necessary, dose increments/decrements of 5 mg QD are recommended. Efficacy in schizophrenia was demonstrated in a dose range of 10 to 15 mg/day in clinical trials. However, doses above 10 mg/day were not demonstrated to be more efficacious than the 10 mg/day dose. An increase to a dose greater than the target dose of 10 mg/day (i.e., to a dose of 15 mg/day or greater) is recommended only after clinical assessment. Olanzapine is not indicated for use in doses above 20 mg/day. — The recommended starting dose is 5 mg in patients who are debilitated, who have a predisposition to hypotensive reactions, who otherwise exhibit a combination of factors that may result in slower metabolism of olanzapine (e.g., nonsmoking female patients ≥65 years of age), or who may be more pharmacodynamically sensitive to olanzapine . When indicated, dose escalation should be performed with caution in these patients. — The effectiveness of oral olanzapine, 10 mg/day to 20 mg/day, in maintaining treatment response in schizophrenic patients who had been stable on olanzapine for approximately 8 weeks and were then followed for relapse has been demonstrated in a placebo-controlled trial . The physician who elects to use olanzapine for extended periods should periodically reevaluate the long-term usefulness of the drug for the individual patient.
Adults Dose Selection Dosing in Special Populations [see Warnings and Precautions ( ), Drug Interactions ( ), and Clinical Pharmacology ( )] 5.14712.3 Maintenance Treatment [see Clinical Studies ( )] 14.1 Adolescents dosing information in pediatric patients with schizophrenia is approved for Eli Lilly and Company’s olanzapine drug product labeling. However, due to Eli Lilly and Company’s marketing exclusivity rights, this drug product is not labeled with that pediatric information. Pediatric2.2 Bipolar I Disorder (Manic or Mixed Episodes)
— Oral olanzapine should be administered on a once-a-day schedule without regard to meals, generally beginning with 10 or 15 mg. Dosage adjustments, if indicated, should generally occur at intervals of not less than 24 hours, reflecting the procedures in the placebo-controlled trials. When dosage adjustments are necessary, dose increments/decrements of 5 mg QD are recommended. Short-term (3 to 4 weeks) antimanic efficacy was demonstrated in a dose range of 5 mg to 20 mg/day in clinical trials. The safety of doses above 20 mg/day has not been evaluated in clinical trials . — The benefit of maintaining bipolar I patients on monotherapy with oral olanzapine at a dose of 5 to 20 mg/day, after achieving a responder status for an average duration of 2 weeks, was demonstrated in a controlled trial . The physician who elects to use olanzapine for extended periods should periodically reevaluate the long-term usefulness of the drug for the individual patient. — When administered as adjunctive treatment to lithium or valproate, oral olanzapine dosing should generally begin with 10 mg once-a-day without regard to meals. Antimanic efficacy was demonstrated in a dose range of 5 mg to 20 mg/day in clinical trials . The safety of doses above 20 mg/day has not been evaluated in clinical trials.
Adults Dose Selection for Monotherapy [see Clinical Studies ( )] 14.2 Maintenance Monotherapy [see Clinical Studies ( )] 14.2 for Adjunctive Treatment Dose Selection [see Clinical Studies ( )] 14.2 Adolescents dosing information in pediatric patients with bipolar 1 disorder is approved for Eli Lilly and Company’s olanzapine drug product labeling. However, due to Eli Lilly and Company’s marketing exclusivity rights, this drug product is not labeled with that pediatric information. Pediatric2.3 Administration of olanzapine orally disintegrating tablets
After opening sachet, peel back foil on blister. Do not push tablet through foil. Immediately upon opening the blister, using dry hands, remove tablet and place entire olanzapine orally disintegrating tablet in the mouth. Tablet disintegration occurs rapidly in saliva so it can be easily swallowed with or without liquid.
2.5 Olanzapine and Fluoxetine in Combination: Depressive Episodes Associated with Bipolar I Disorder
When using olanzapine and fluoxetine in combination, also refer to the Clinical Studies section of the package insert for Symbyax*. Oral olanzapine should be administered in combination with fluoxetine once daily in the evening, without regard to meals, generally beginning with 5 mg of oral olanzapine and 20 mg of fluoxetine. Dosage adjustments, if indicated, can be made according to efficacy and tolerability within dose ranges of oral olanzapine 5 mg to 12.5 mg and fluoxetine 20 mg to 50 mg. Antidepressant efficacy was demonstrated with olanzapine and fluoxetine in combination in adult patients with a dose range of olanzapine 6 mg to 12 mg and fluoxetine 25 mg to 50 mg. Safety and efficacy of olanzapine and fluoxetine in combination was determined in clinical trials supporting approval of Symbyax* (fixed dose combination of olanzapine and fluoxetine). Symbyax* is dosed between 3 mg/25 mg (olanzapine/fluoxetine) per day and 12 mg/50 mg (olanzapine/fluoxetine) per day. The following table demonstrates the appropriate individual component doses of olanzapine and fluoxetine versus Symbyax*. Dosage adjustments, if indicated, should be made with the individual components according to efficacy and tolerability. While there is no body of evidence to answer the question of how long a patient treated with olanzapine and fluoxetine in combination should remain on it, it is generally accepted that bipolar I disorder, including the depressive episodes associated with bipolar I disorder, is a chronic illness requiring chronic treatment. The physician should periodically reexamine the need for continued pharmacotherapy. Safety of coadministration of doses above 18 mg olanzapine with 75 mg fluoxetine has not been evaluated in clinical studies. monotherapy is not indicated for the treatment of depressive episodes associated with bipolar I disorder.
Table 1: Approximate Dose Correspondence Between Symbyax * and the Combination of Olanzapine and Fluoxetine a For Symbyax* (mg/day) Use in Combination Olanzapine (mg/day) Fluoxetine (mg/day) Symbyax* (olanzapine/fluoxetine Hydrochloride) is a fixed-dose combination of olanzapine and fluoxetine. a 3 mg olanzapine/25 mg fluoxetine 2.5 20 6 mg olanzapine/25 mg fluoxetine 5 20 12 mg olanzapine/25 mg fluoxetine 10+2.5 20 6 mg olanzapine/50 mg fluoxetine 5 40+10 12 mg olanzapine/50 mg fluoxetine 10+2.5 40+10 Olanzapine2.7 Olanzapine and Fluoxetine in Combination: Dosing in Special Populations
The starting dose of oral olanzapine 2.5 mg to 5 mg with fluoxetine 20 mg should be used for patients with a predisposition to hypotensive reactions, patients with hepatic impairment, or patients who exhibit a combination of factors that may slow the metabolism of olanzapine or fluoxetine in combination (female gender, geriatric age, nonsmoking status), or those patients who may be pharmacodynamically sensitive to olanzapine. Dosing modification may be necessary in patients who exhibit a combination of factors that may slow metabolism. When indicated, dose escalation should be performed with caution in these patients. Olanzapine and fluoxetine in combination have not been systematically studied in patients over 65 years of age or in patients <18 years of age .
[see Warnings and Precautions ( ), Drug Interactions ( ), and Clinical Pharmacology ( )] 5.14712.3 -
Hydrocodone Bitartrate
2.1 Acute Treatment
— STRATTERA should be initiated at a total daily dose of approximately 0.5 mg/kg and increased after a minimum of 3 days to a target total daily dose of approximately 1.2 mg/kg administered either as a single daily dose in the morning or as evenly divided doses in the morning and late afternoon/early evening. No additional benefit has been demonstrated for doses higher than 1.2 mg/kg/day . Dosing of children and adolescents up to 70 kg body weight[see Clinical Studies ( )] 14
The total daily dose in children and adolescents should not exceed 1.4 mg/kg or 100 mg, whichever is less.
— STRATTERA should be initiated at a total daily dose of 40 mg and increased after a minimum of 3 days to a target total daily dose of approximately 80 mg administered either as a single daily dose in the morning or as evenly divided doses in the morning and late afternoon/early evening. After 2 to 4 additional weeks, the dose may be increased to a maximum of 100 mg in patients who have not achieved an optimal response. There are no data that support increased effectiveness at higher doses . Dosing of children and adolescents over 70 kg body weight and adults[see Clinical Studies ( )] 14
The maximum recommended total daily dose in children and adolescents over 70 kg and adults is 100 mg.
2.2 Maintenance/Extended Treatment
It is generally agreed that pharmacological treatment of ADHD may be needed for extended periods. The benefit of maintaining pediatric patients (ages 6-15 years) with ADHD on STRATTERA after achieving a response in a dose range of 1.2 to 1.8 mg/kg/day was demonstrated in a controlled trial. Patients assigned to STRATTERA in the maintenance phase were generally continued on the same dose used to achieve a response in the open label phase. The physician who elects to use STRATTERA for extended periods should periodically reevaluate the long-term usefulness of the drug for the individual patient . [see Clinical Studies ( )] 14.1
2.3 General Dosing Information
STRATTERA may be taken with or without food.
STRATTERA can be discontinued without being tapered.
STRATTERA capsules are not intended to be opened, they should be taken whole . [see Patient Counseling Information ( )] 17.6
The safety of single doses over 120 mg and total daily doses above 150 mg have not been systematically evaluated.
2.4 Dosing in Specific Populations
— For those ADHD patients who have hepatic insufficiency (HI), dosage adjustment is recommended as follows: For patients with moderate HI (Child-Pugh Class B), initial and target doses should be reduced to 50% of the normal dose (for patients without HI). For patients with severe HI (Child-Pugh Class C), initial dose and target doses should be reduced to 25% of normal . Dosing adjustment for hepatically impaired patients[see Use In Specific Populations ( )] 8.6
— In children and adolescents up to 70 kg body weight administered strong CYP2D6 inhibitors, e.g., paroxetine, fluoxetine, and quinidine, or in patients who are known to be CYP2D6 PMs, STRATTERA should be initiated at 0.5 mg/kg/day and only increased to the usual target dose of 1.2 mg/kg/day if symptoms fail to improve after 4 weeks and the initial dose is well tolerated. Dosing adjustment for use with a strong CYP2D6 inhibitor or in patients who are known to be CYP2D6 PMs
In children and adolescents over 70 kg body weight and adults administered strong CYP2D6 inhibitors, e.g., paroxetine, fluoxetine, and quinidine, STRATTERA should be initiated at 40 mg/day and only increased to the usual target dose of 80 mg/day if symptoms fail to improve after 4 weeks and the initial dose is well tolerated.
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Hydrocodone Bitartrate
THE USUAL DOSAGE AND FREQUENCY OF ADMINISTRATION OF DOXYCYCLINE DIFFERS FROM THAT OF THE OTHER TETRACYCLINES. EXCEEDING THE RECOMMENDED DOSAGE MAY RESULT IN AN INCREASED INCIDENCE OF SIDE EFFECTS. Adults: The usual dose of oral doxycycline is 200 mg on the first day of treatment (administered 100 mg every 12 hours) followed by a maintenance dose of 100 mg/day.
In the management of more severe infections (particularly chronic infections of the urinary tract), 100 mg every 12 hours is recommended.
For children above eight years of age: The recommended dosage schedule for children weighing 100 pounds or less is 2 mg/lb of body weight divided into two doses on the first day of treatment, followed by 1 mg/lb of body weight given as a single daily dose or divided into two doses, on subsequent days. For more severe infections up to 2 mg/lb of body weight may be used. For children over 100 lb the usual adult dose should be used.
The therapeutic antibacterial serum activity will usually persist for 24 hours following recommended dosage.
When used in streptococcal infections, therapy should be continued for 10 days.
Administration of adequate amounts of fluid along with capsule and tablet forms of drugs in the tetracycline class is recommended to wash down the drugs and reduce the risk of esophageal irritation and ulceration. (See ) ADVERSE REACTIONS.
If gastric irritation occurs, it is recommended that doxycycline be given with food or milk. The absorption of doxycycline is not markedly influenced by simultaneous ingestion of food or milk.
Studies to date have indicated that administration of doxycycline at the usual recommended doses does not lead to excessive accumulation of the antibiotic in patients with renal impairment.
Uncomplicated gonococcal infections in adults (except anorectal infections in men): 100 mg, by mouth, twice a day for 7 days. As an alternate single visit dose, administer 300 mg stat followed in one hour by a second 300 mg dose. The dose may be administered with food, including milk or carbonated beverage, as required.
Uncomplicated urethral, endocervical, or rectal infection in adults caused by : 100 mg, by mouth, twice a day for 7 days. Chlamydia trachomatis
Nongonococcal urethritis (NGU) caused by or : 100 mg, by mouth, twice a day for 7 days. C. trachomatisU. urealyticum
Syphilis–early: Patients who are allergic to penicillin should be treated with doxycycline 100 mg, by mouth, twice a day for 2 weeks.
Syphilis of more than one year’s duration: Patients who are allergic to penicillin should be treated with doxycycline 100 mg, by mouth, twice a day for 4 weeks.
Acute epididymo-orchitis caused by : 100 mg, by mouth, twice a day for at least 10 days. N. gonorrhoeae
Acute epididymo-orchitis caused by : 100 mg, by mouth, twice a day for at least 10 days. C. trachomatis
For the prophylaxis of malaria: For adults, the recommended dose is 100 mg daily. For children over 8 years of age, the recommended dose is 2 mg/kg given once daily up to the adult dose. Prophylaxis should begin 1 to 2 days before travel to the malarious area.
Prophylaxis should be continued daily during travel in the malarious area and for 4 weeks after the traveler leaves the malarious area.
Inhalational anthrax (post-exposure):
ADULTS: 100 mg of doxycycline, by mouth, twice a day for 60 days. CHILDREN: weighing less than 100 lb (45 kg); 1 mg/lb (2.2 mg/kg) of body weight, by mouth, twice a day for 60 days. Children weighing 100 lb or more should receive the adult dose.
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Tylenol Extra Strength
2.1 Major Depressive Disorder
— In controlled trials used to support the efficacy of fluoxetine, patients were administered morning doses ranging from 20 to 80 mg/day. Studies comparing fluoxetine 20, 40, and 60 mg/day to placebo indicate that 20 mg/day is sufficient to obtain a satisfactory response in Major Depressive Disorder in most cases. Consequently, a dose of 20 mg/day, administered in the morning, is recommended as the initial dose. A dose increase may be considered after several weeks if insufficient clinical improvement is observed. Doses above 20 mg/day may be administered on a once-a-day (morning) or BID schedule (i.e., morning and noon) and should not exceed a maximum dose of 80 mg/day. — In the short-term (8 to 9 week) controlled clinical trials of fluoxetine supporting its effectiveness in the treatment of Major Depressive Disorder, patients were administered fluoxetine doses of 10 to 20 mg/day . Treatment should be initiated with a dose of 10 or 20 mg/day. After 1 week at 10 mg/day, the dose should be increased to 20 mg/day. However, due to higher plasma levels in lower weight children, the starting and target dose in this group may be 10 mg/day. A dose increase to 20 mg/day may be considered after several weeks if insufficient clinical improvement is observed. — As with other drugs effective in the treatment of Major Depressive Disorder, the full effect may be delayed until 4 weeks of treatment or longer. — It is generally agreed that acute episodes of Major Depressive Disorder require several months or longer of sustained pharmacologic therapy. Whether the dose needed to induce remission is identical to the dose needed to maintain and/or sustain euthymia is unknown. — Systematic evaluation of fluoxetine capsules in adult patients has shown that its efficacy in Major Depressive Disorder is maintained for periods of up to 38 weeks following 12 weeks of open-label acute treatment (50 weeks total) at a dose of 20 mg/day . — Dosage of a TCA may need to be reduced, and plasma TCA concentrations may need to be monitored temporarily when fluoxetine is coadministered or has been recently discontinued . Initial Treatment Adult Pediatric (children and adolescents) [see ] Clinical Studies (14.1) All patients Maintenance/Continuation/Extended Treatment Daily Dosing [see ] Clinical Studies (14.1)Switching Patients to a Tricyclic Antidepressant (TCA) [see and ] Warnings and Precautions (5.2)Drug Interactions (7.7)
2.2 Obsessive Compulsive Disorder
— In the controlled clinical trials of fluoxetine supporting its effectiveness in the treatment of OCD, patients were administered fixed daily doses of 20, 40, or 60 mg of fluoxetine or placebo . In one of these studies, no dose-response relationship for effectiveness was demonstrated. Consequently, a dose of 20 mg/day, administered in the morning, is recommended as the initial dose. Since there was a suggestion of a possible dose-response relationship for effectiveness in the second study, a dose increase may be considered after several weeks if insufficient clinical improvement is observed. The full therapeutic effect may be delayed until 5 weeks of treatment or longer. Doses above 20 mg/day may be administered on a once daily (i.e., morning) or BID schedule (i.e., morning and noon). A dose range of 20 to 60 mg/day is recommended; however, doses of up to 80 mg/day have been well tolerated in open studies of OCD. The maximum fluoxetine dose should not exceed 80 mg/day. — In the controlled clinical trial of fluoxetine supporting its effectiveness in the treatment of OCD, patients were administered fluoxetine doses in the range of 10 to 60 mg/day . In adolescents and higher weight children, treatment should be initiated with a dose of 10 mg/day. After 2 weeks, the dose should be increased to 20 mg/day. Additional dose increases may be considered after several more weeks if insufficient clinical improvement is observed. A dose range of 20 to 60 mg/day is recommended. In lower weight children, treatment should be initiated with a dose of 10 mg/day. Additional dose increases may be considered after several more weeks if insufficient clinical improvement is observed. A dose range of 20 to 30 mg/day is recommended. Experience with daily doses greater than 20 mg is very minimal, and there is no experience with doses greater than 60 mg. — While there are no systematic studies that answer the question of how long to continue fluoxetine capsules, OCD is a chronic condition and it is reasonable to consider continuation for a responding patient. Although the efficacy of fluoxetine capsules after 13 weeks has not been documented in controlled trials, adult patients have been continued in therapy under double-blind conditions for up to an additional 6 months without loss of benefit. However, dosage adjustments should be made to maintain the patient on the lowest effective dosage, and patients should be periodically reassessed to determine the need for treatment. Initial Treatment Adult [see ] Clinical Studies (14.2) Pediatric (children and adolescents) [see ] Clinical Studies (14.2) Maintenance/Continuation Treatment
2.3 Bulimia Nervosa
— In the controlled clinical trials of fluoxetine supporting its effectiveness in the treatment of Bulimia Nervosa, patients were administered fixed daily fluoxetine doses of 20 or 60 mg, or placebo . Only the 60 mg dose was statistically significantly superior to placebo in reducing the frequency of binge-eating and vomiting. Consequently, the recommended dose is 60 mg/day, administered in the morning. For some patients it may be advisable to titrate up to this target dose over several days. Fluoxetine doses above 60 mg/day have not been systematically studied in patients with bulimia. — Systematic evaluation of continuing fluoxetine capsules 60 mg/day for periods of up to 52 weeks in patients with bulimia who have responded while taking fluoxetine capsules 60 mg/day during an 8-week acute treatment phase has demonstrated a benefit of such maintenance treatment . Nevertheless, patients should be periodically reassessed to determine the need for maintenance treatment. Initial Treatment[see ] Clinical Studies (14.3) Maintenance/Continuation Treatment [see ] Clinical Studies (14.3)
2.4 Panic Disorder
— In the controlled clinical trials of fluoxetine supporting its effectiveness in the treatment of Panic Disorder, patients were administered fluoxetine doses in the range of 10 to 60 mg/day . Treatment should be initiated with a dose of 10 mg/day. After one week, the dose should be increased to 20 mg/day. The most frequently administered dose in the 2 flexible-dose clinical trials was 20 mg/day. A dose increase may be considered after several weeks if no clinical improvement is observed. Fluoxetine doses above 60 mg/day have not been systematically evaluated in patients with Panic Disorder. — While there are no systematic studies that answer the question of how long to continue fluoxetine capsules, panic disorder is a chronic condition and it is reasonable to consider continuation for a responding patient. Nevertheless, patients should be periodically reassessed to determine the need for continued treatment. Initial Treatment[see ] Clinical Studies (14.4) Maintenance/Continuation Treatment
2.5 Fluoxetine Capsules and Olanzapine in Combination: Depressive Episodes Associated with Bipolar I Disorder
When using fluoxetine capsules and olanzapine in combination, also refer to the Clinical Studies section of the package insert for Symbyax.
Fluoxetine should be administered in combination with oral olanzapine once daily in the evening, without regard to meals, generally beginning with 5 mg of oral olanzapine and 20 mg of fluoxetine. Dosage adjustments, if indicated, can be made according to efficacy and tolerability within dose ranges of fluoxetine 20 to 50 mg and oral olanzapine 5 to 12.5 mg. Antidepressant efficacy was demonstrated with olanzapine and fluoxetine in combination with a dose range of olanzapine 6 to 12 mg and fluoxetine 25 to 50 mg. Safety of co-administration of doses above 18 mg olanzapine with 75 mg fluoxetine has not been evaluated in clinical studies. Adult — Information for pediatric patients (10 to 17 years) is approved for Eli Lilly and Company’s Fluoxetine Capsules. However due to Eli Lilly and Company’s marketing exclusivity rights, this drug product is not labeled with that pediatric information.
Safety and efficacy of fluoxetine in combination with olanzapine was determined in clinical trials supporting approval of Symbyax (fixed-dose combination of olanzapine and fluoxetine). Symbyax is dosed between 3 mg/25 mg (olanzapine/fluoxetine) per day and 12 mg/50 mg (olanzapine/fluoxetine) per day. The following table demonstrates the appropriate individual component doses of fluoxetine capsules and olanzapine versus Symbyax. Dosage adjustments, if indicated, should be made with the individual components according to efficacy and tolerability.
Table 1: Approximate Dose Correspondence Between Symbyax and the Combination of Fluoxetine and Olanzapine 1 For Symbyax (mg/day) Use in Combination Olanzapine (mg/day) Fluoxetine (mg/day) Symbyax (olanzapine/fluoxetine hydrochloride) is a fixed-dose combination of fluoxetine and olanzapine. 1 3 mg olanzapine/25 mg fluoxetine 2.5 20 6 mg olanzapine/25 mg fluoxetine 5 20 12 mg olanzapine/25 mg fluoxetine 10+2.5 20 6 mg olanzapine/50 mg fluoxetine 5 40+10 12 mg olanzapine/50 mg fluoxetine 10+2.5 40+10While there is no body of evidence to answer the question of how long a patient treated with fluoxetine capsules and olanzapine in combination should remain on it, it is generally accepted that Bipolar I Disorder, including the depressive episodes associated with Bipolar I Disorder, is a chronic illness requiring chronic treatment. The physician should periodically re-examine the need for continued pharmacotherapy. Fluoxetine capsules monotherapy is not indicated for the treatment of depressive episodes associated with Bipolar I Disorder.
2.7 Dosing in Specific Populations
— When treating pregnant women with fluoxetine capsules, the physician should carefully consider the potential risks and potential benefits of treatment. Neonates exposed to SSRIs or SNRIs late in the third trimester have developed complications requiring prolonged hospitalization, respiratory support, and tube feeding — A lower or less frequent dosage should be considered for the elderly — As with many other medications, a lower or less frequent dosage should be used in patients with hepatic impairment — Patients with concurrent disease or on multiple concomitant medications may require dosage adjustments — The starting dose of oral olanzapine 2.5 to 5 mg with fluoxetine 20 mg should be used for patients with a predisposition to hypotensive reactions, patients with hepatic impairment, or patients who exhibit a combination of factors that may slow the metabolism of olanzapine or fluoxetine in combination (female gender, geriatric age, non-smoking status), or those patients who may be pharmacodynamically sensitive to olanzapine. Dosing modifications may be necessary in patients who exhibit a combination of factors that may slow metabolism. When indicated, dose escalation should be performed with caution in these patients. Fluoxetine capsules and olanzapine in combination have not been systematically studied in patients over 65 years of age or in patients less than 10 years of age . Treatment of Pregnant Women[see ]. Use in Specific Populations (8.1) Geriatric[see ]. Use in Specific Populations (8.5) Hepatic Impairment[see and ]. Clinical Pharmacology (12.4)Use in Specific Populations (8.6) Concomitant Illness[see Clinical and ]. Pharmacology (12.4)Warnings and Precautions (5.12) Fluoxetine Capsules and Olanzapine in Combination [see and ] Warnings and Precautions (5.16)Drug Interactions (7.7)
2.8 Discontinuation of Treatment
Symptoms associated with discontinuation of fluoxetine, SNRIs, and SSRIs, have been reported [see Warnings and Precautions (5.15)].
2.9 Switching a Patient To or From a Monoamine Oxidase Inhibitor (MAOI) Intended to Treat Psychiatric Disorders
At least 14 days should elapse between discontinuation of an MAOI intended to treat psychiatric disorders and initiation of therapy with fluoxetine capsules. Conversely, at least 5 weeks should be allowed after stopping fluoxetine capsules before starting an MAOI intended to treat psychiatric disorders [ ]. see Contraindications (4.1)
2.10 Use of Fluoxetine Capsules with Other MAOIs such as Linezolid or Methylene Blue
Do not start fluoxetine capsules in a patient who is being treated with linezolid or intravenous methylene blue because there is an increased risk of serotonin syndrome. In a patient who requires more urgent treatment of a psychiatric condition, other interventions, including hospitalization, should be considered In some cases, a patient already receiving fluoxetine capsules therapy may require urgent treatment with linezolid or intravenous methylene blue. If acceptable alternatives to linezolid or intravenous methylene blue treatment are not available and the potential benefits of linezolid or intravenous methylene blue treatment are judged to outweigh the risks of serotonin syndrome in a particular patient, fluoxetine capsules should be stopped promptly, and linezolid or intravenous methylene blue can be administered. The patient should be monitored for symptoms of serotonin syndrome for five weeks or until 24 hours after the last dose of linezolid or intravenous methylene blue, whichever comes first. Therapy with fluoxetine capsules may be resumed 24 hours after the last dose of linezolid or intravenous methylene blue The risk of administering methylene blue by non-intravenous routes (such as oral tablets or by local injection) or in intravenous doses much lower than 1 mg/kg with fluoxetine capsules is unclear. The clinician should, nevertheless, be aware of the possibility of emergent symptoms of serotonin syndrome with such use . [see ]. Contraindications (4.1) [see ]. Warnings and Precautions (5.2) [see ] Warnings and Precautions (5.2)
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Sulfamethoxazole And Trimethoprim
There is no fixed dosage regimen for the management of diabetes mellitus with glipizide or any other hypoglycemic agent. In addition to the usual monitoring of urinary glucose, the patient's blood glucose must also be monitored periodically to determine the minimum effective dose for the patient; to detect primary failure, i.e., inadequate lowering of blood glucose at the maximum recommended dose of medication; and to detect secondary failure, i.e., loss of an adequate blood-glucose-lowering response after an initial period of effectiveness. Glycosylated hemoglobin levels may also be of value in monitoring the patient's response to therapy.
Short-term administration of glipizide may be sufficient during periods of transient loss of control in patients usually controlled well on diet.
In general, glipizide should be given approximately 30 minutes before a meal to achieve the greatest reduction in postprandial hyperglycemia.
Initial Dose
The recommended starting dose is 5 mg, given before breakfast. Geriatric patients or those with liver disease may be started on 2.5 mg.
Titration
Dosage adjustments should ordinarily be in increments of 2.5 to 5 mg, as determined by blood glucose response. At least several days should elapse between titration steps. If response to a single dose is not satisfactory, dividing that dose may prove effective. The maximum recommended once daily dose is 15 mg. Doses above 15 mg should ordinarily be divided and given before meals of adequate caloric content. The maximum recommended total daily dose is 40 mg.
Maintenance
Some patients may be effectively controlled on a once-a-day regimen, while others show better response with divided dosing. Total daily doses above 15 mg should ordinarily be divided. Total daily doses above 30 mg have been safely given on a b.i.d. basis to long-term patients.
In elderly patients, debilitated or malnourished patients, and patients with impaired renal or hepatic function, the initial and maintenance dosing should be conservative to avoid hypo glycemic reactions (see section). PRECAUTIONS
Patients Receiving Insulin
As with other sulfonylurea-class hypoglycemics, many stable non-insulin-dependent diabetic patients receiving insulin may be safely placed on glipizide. When transferring patients from insulin to glipizide, the following general guidelines should be considered:
For patients whose daily insulin requirement is 20 units or less, insulin may be discontinued and glipizide therapy may begin at usual dosages. Several days should elapse between glipizide titration steps. For patients whose daily insulin requirement is greater than 20 units, the insulin dose should be reduced by 50% and glipizide therapy may begin at usual dosages. Subsequent reductions in insulin dosage should depend on individual patient response. Several days should elapse between glipizide titration steps.During the insulin withdrawal period, the patient should test urine samples for sugar and ketone bodies at least three times daily. Patients should be instructed to contact the prescriber immediately if these tests are abnormal. In some cases, especially when patient has been receiving greater than 40 units of insulin daily, it may be advisable to consider hospitalization during the transition period.
Patients Receiving Other Oral Hypoglycemic Agents
As with other sulfonylurea-class hypoglycemics, no transition period is necessary when transferring patients to glipizide. Patients should be observed carefully (1 to 2 weeks) for hypoglycemia when being transferred from longer half-life sulfonylureas (e.g., chlorpropamide) to glipizide due to potential overlapping of drug effect.
When colesevelam is coadministered with glipizide ER, maximum plasma concentration and total exposure to glipizide is reduced. Therefore, glipizide should be administered at least 4 hours prior to colesevelam.
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Quetiapine Fumarate
2.1 Important Administration Instructions
Quetiapine fumarate tablets can be taken with or without food.
2.2 Recommended Dosing
The recommended initial dose, titration, dose range and maximum quetiapine fumarate tablets dose for each approved indication is displayed in Table 1. After initial dosing, adjustments can be made upwards or downwards, if necessary, depending upon the clinical response and tolerability of the patient [see and ]. Clinical Studies(14.1)(14.2)
Table 1: Recommended Dosing for Quetiapine Fumarate Tablets Indication Initial Dose and Titration Recommended Dose Maximum DoseSchizophrenia-Adults
Day 1: 25 mg twice daily. Increase in increments of 25 mg to 50 mg divided two or three times on Days 2 and 3 to range of 300 to 400 mg by Day 4.
Further adjustments can be made in increments of 25 to 50 mg twice a day, in intervals of not less than 2 days.
150 to 750 mg/day
750 mg/day
Schizophrenia-Adolescents (13 to 17 years)
Day 1: 25 mg twice daily.
Day 2: Twice daily dosing totaling 100 mg.
Day 3: Twice daily dosing totaling 200 mg.
Day 4: Twice daily dosing totaling 300 mg.
Day 5: Twice daily dosing totaling 400 mg.
Further adjustments should be in increments no greater than 100 mg/day within the recommended dose range of 400 to 800 mg/day. Based on response and tolerability, may be administered three times daily.
400 to 800 mg/day
800 mg/day
Schizophrenia-Maintenance
N/A 1
400 to 800 mg/day
800 mg/day
Bipolar Mania- Adults Monotherapy or as an adjunct to lithium or divalproex
Day 1: Twice daily dosing totaling 100 mg.
Day 2: Twice daily dosing totaling 200 mg.
Day 3: Twice daily dosing totaling 300 mg.
Day 4: Twice daily dosing totaling 400 mg.
Further dosage adjustments up to 800 mg/day by Day 6 should be in increments of no greater than 200 mg/day.
400 to 800 mg/day
800 mg/day
Bipolar Mania- Children and Adolescents (10 to 17 years), Monotherapy
Day 1: 25 mg twice daily.
Day 2: Twice daily dosing totaling 100 mg.
Day 3: Twice daily dosing totaling 200 mg.
Day 4: Twice daily dosing totaling 300 mg.
Day 5: Twice daily dosing totaling 400 mg.
Further adjustments should be in increments no greater than 100 mg/day within the recommended dose range of 400 to 600 mg/day. Based on response and tolerability, may be administered three times daily.
400 to 600 mg/day
600 mg/day
Bipolar Depression-Adults
Administer once daily at bedtime.
Day 1: 50 mg
Day 2: 100 mg
Day 3: 200 mg
Day 4: 300 mg
300 mg/day
300 mg/day
Bipolar I Disorder Maintenance Therapy- Adults
Administer twice daily totaling 400 to 800 mg/day as adjunct to lithium or divalproex. Generally, in the maintenance phase, patients continued on the same dose on which they were stabilized.
400 to 800 mg/day
800 mg/day
N/A Not applicable 1
Maintenance Treatment for Schizophrenia and Bipolar I Disorder
Maintenance — Patients should be periodically reassessed to determine the need for maintenance treatment and the appropriate dose for such treatment Treatment[see ]. Clinical Studies (14.2)
2.3 Dose Modifications in Elderly Patients
Consideration should be given to a slower rate of dose titration and a lower target dose in the elderly and in patients who are debilitated or who have a predisposition to hypotensive reactions . When indicated, dose escalation should be performed with caution in these patients. [see ] Clinical Pharmacology (12.3)
Elderly patients should be started on quetiapine fumarate tablets 50 mg/day and the dose can be increased in increments of 50 mg/day depending on the clinical response and tolerability of the individual patient.
2.4 Dose Modifications in Hepatically Impaired Patients
Patients with hepatic impairment should be started on 25 mg/day. The dose should be increased daily in increments of 25 mg/day to 50 mg/day to an effective dose, depending on the clinical response and tolerability of the patient.
2.5 Dose Modifications when used with CYP3A4 Inhibitors
Quetiapine fumarate tablets dose should be reduced to one sixth of original dose when co-medicated with a potent CYP3A4 inhibitor (e.g. ketoconazole, itraconazole, indinavir, ritonavir, nefazodone, etc.). When the CYP3A4 inhibitor is discontinued, the dose of quetiapine fumarate tablets should be increased by 6 fold . [see and ] Clinical Pharmacology (12.3)Drug Interactions (7.1)
2.6 Dose Modifications when used with CYP3A4 Inducers
Quetiapine fumarate tablets dose should be increased up to 5 fold of the original dose when used in combination with a chronic treatment (e.g., greater than 7 to 14 days) of a potent CYP3A4 inducer (e.g. phenytoin, carbamazepine, rifampin, avasimibe, St. John’s wort etc.). The dose should be titrated based on the clinical response and tolerability of the individual patient. When the CYP3A4 inducer is discontinued, the dose of quetiapine fumarate tablets should be reduced to the original level within 7 to 14 days . [see and ] Clinical Pharmacology (12.3)Drug Interactions (7.1)
2.7 Reinitiation of Treatment in Patients Previously Discontinued
Although there are no data to specifically address re-initiation of treatment, it is recommended that when restarting therapy of patients who have been off quetiapine fumarate tablets for more than one week, the initial dosing schedule should be followed. When restarting patients who have been off quetiapine fumarate tablets for less than one week, gradual dose escalation may not be required and the maintenance dose may be reinitiated.
2.8 Switching from Antipsychotics
There are no systematically collected data to specifically address switching patients with schizophrenia from antipsychotics to quetiapine fumarate tablets, or concerning concomitant administration with antipsychotics. While immediate discontinuation of the previous antipsychotic treatment may be acceptable for some patients with schizophrenia, more gradual discontinuation may be most appropriate for others. In all cases, the period of overlapping antipsychotic administration should be minimized. When switching patients with schizophrenia from depot antipsychotics, if medically appropriate, initiate quetiapine fumarate tablets therapy in place of the next scheduled injection. The need for continuing existing EPS medication should be re-evaluated periodically.
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Abilify
2.1 Schizophrenia
Adults
Dose Selection: The recommended starting and target dose for ABILIFY is 10 mg/day or 15 mg/day administered on a once-a-day schedule without regard to meals. ABILIFY has been systematically evaluated and shown to be effective in a dose range of 10 mg/day to 30 mg/day, when administered as the tablet formulation; however, doses higher than 10 mg/day or 15 mg/day were not more effective than 10 mg/day or 15 mg/day. Dosage increases should generally not be made before 2 weeks, the time needed to achieve steady-state . [see CLINICAL STUDIES ] (14.1)
Maintenance Treatment: Maintenance of efficacy in schizophrenia was demonstrated in a trial involving patients with schizophrenia who had been symptomatically stable on other antipsychotic medications for periods of 3 months or longer. These patients were discontinued from those medications and randomized to either ABILIFY 15 mg/day or placebo, and observed for relapse . Patients should be periodically reassessed to determine the continued need for maintenance treatment. [see CLINICAL STUDIES ] (14.1)
Adolescents
Dose Selection: The recommended target dose of ABILIFY is 10 mg/day. Aripiprazole was studied in adolescent patients 13 to 17 years of age with schizophrenia at daily doses of 10 mg and 30 mg. The starting daily dose of the tablet formulation in these patients was 2 mg, which was titrated to 5 mg after 2 days and to the target dose of 10 mg after 2 additional days. Subsequent dose increases should be administered in 5 mg increments. The 30 mg/day dose was not shown to be more efficacious than the 10 mg/day dose. ABILIFY can be administered without regard to meals . [see CLINICAL STUDIES ] (14.1)
Maintenance Treatment: The efficacy of ABILIFY for the maintenance treatment of schizophrenia in the adolescent population has not been evaluated. While there is no body of evidence available to answer the question of how long the adolescent patient treated with ABILIFY should be maintained on the drug, maintenance efficacy can be extrapolated from adult data along with comparisons of aripiprazole pharmacokinetic parameters in adult and pediatric patients. Thus, it is generally recommended that responding patients be continued beyond the acute response, but at the lowest dose needed to maintain remission. Patients should be periodically reassessed to determine the need for maintenance treatment.
Switching from Other Antipsychotics
There are no systematically collected data to specifically address switching patients with schizophrenia from other antipsychotics to ABILIFY or concerning concomitant administration with other antipsychotics. While immediate discontinuation of the previous antipsychotic treatment may be acceptable for some patients with schizophrenia, more gradual discontinuation may be most appropriate for others. In all cases, the period of overlapping antipsychotic administration should be minimized.
2.2 Bipolar I Disorder
Acute Treatment of Manic and Mixed Episodes
Adults: The recommended starting dose in adults is 15 mg given once daily as monotherapy and 10 mg to 15 mg given once daily as adjunctive therapy with lithium or valproate. ABILIFY can be given without regard to meals. The recommended target dose of ABILIFY is 15 mg/day, as monotherapy or as adjunctive therapy with lithium or valproate. The dose may be increased to 30 mg/day based on clinical response. The safety of doses above 30 mg/day has not been evaluated in clinical trials.
Pediatrics: The recommended starting dose in pediatric patients (10 to 17 years) as monotherapy is 2 mg/day, with titration to 5 mg/day after 2 days, and a target dose of 10 mg/day after 2 additional days. Recommended dosing as adjunctive therapy to lithium or valproate is the same. Subsequent dose increases, if needed, should be administered in 5 mg/day increments. ABILIFY can be given without regard to meals . [see CLINICAL STUDIES ] (14.2)
Maintenance Treatment
The recommended dose for maintenance treatment, whether as monotherapy or as adjunctive therapy, is the same dose needed to stabilize patients during acute treatment, both for adult and pediatric patients. Patients should be periodically reassessed to determine the continued need for maintenance treatment [see CLINICAL STUDIES ]. (14.2)
2.3 Adjunctive Treatment of Major Depressive Disorder
Adults
Dose Selection: The recommended starting dose for ABILIFY as adjunctive treatment for patients already taking an antidepressant is 2 mg/day to 5 mg/day. The efficacy of ABILIFY as an adjunctive therapy for major depressive disorder was established within a dose range of 2 mg/day to 15 mg/day. Dose adjustments of up to 5 mg/day should occur gradually, at intervals of no less than 1 week . [see CLINICAL STUDIES ] (14.3)
Maintenance Treatment: The efficacy of ABILIFY for the adjunctive maintenance treatment of major depressive disorder has not been evaluated. While there is no body of evidence available to answer the question of how long the patient treated with ABILIFY should be maintained, patients should be periodically reassessed to determine the continued need for maintenance treatment.
2.4 Irritability Associated with Autistic Disorder
Pediatric Patients
Dose Selection: The efficacy of aripiprazole has been established in the treatment of pediatric patients 6 to 17 years of age with irritability associated with autistic disorder at doses of 5 mg/day to 15 mg/day. The dosage of ABILIFY should be individualized according to tolerability and response.
Dosing should be initiated at 2 mg/day. The dose should be increased to 5 mg/day, with subsequent increases to 10 mg/day or 15 mg/day if needed. Dose adjustments of up to 5 mg/day should occur gradually, at intervals of no less than 1 week . [see CLINICAL STUDIES ] (14.4)
. Maintenance Treatment: In a clinical trial with ABILIFY conducted in children and adolescents (6 to 17 years of age), the efficacy of ABILIFY for the maintenance treatment of irritability associated with autistic disorder was not established [see Use in Specific Populations ]. Patients should be periodically reassessed to determine the continued need for maintenance treatment (8.4)
2.5 Agitation Associated with Schizophrenia or Bipolar Mania (Intramuscular Injection)
Adults
Dose Selection: The recommended dose in these patients is 9.75 mg. The effectiveness of aripiprazole injection in controlling agitation in schizophrenia and bipolar mania was demonstrated over a dose range of 5.25 mg to 15 mg. No additional benefit was demonstrated for 15 mg compared to 9.75 mg. A lower dose of 5.25 mg may be considered when clinical factors warrant. If agitation warranting a second dose persists following the initial dose, cumulative doses up to a total of 30 mg/day may be given. However, the efficacy of repeated doses of aripiprazole injection in agitated patients has not been systematically evaluated in controlled clinical trials. The safety of total daily doses greater than 30 mg or injections given more frequently than every 2 hours have not been adequately evaluated in clinical trials . [see CLINICAL STUDIES ] (14.5)
If ongoing aripiprazole therapy is clinically indicated, oral aripiprazole in a range of 10 mg/day to 30 mg/day should replace aripiprazole injection as soon as possible . [see DOSAGE AND ADMINISTRATION and ] (2.12.2)
Administration of ABILIFY Injection
To administer ABILIFY Injection, draw up the required volume of solution into the syringe as shown in Table 1. Discard any unused portion.
Table 1: ABILIFY Injection Dosing Recommendations Single-Dose Required Volume of Solution5.25 mg
0.7 mL
9.75 mg
1.3 mL
15 mg
2 mL
ABILIFY Injection is intended for intramuscular use only. Do not administer intravenously or subcutaneously. Inject slowly, deep into the muscle mass.
Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration, whenever solution and container permit.
2.6 Dosage Adjustment
Dosage adjustments in adults are not routinely indicated on the basis of age, gender, race, or renal or hepatic impairment status . [see USE IN SPECIFIC POPULATIONS - ] (8.48.10)
When concomitant administration of aripiprazole with strong CYP3A4 inhibitors such as ketoconazole or clarithromycin is indicated, the aripiprazole dose should be reduced to one-half of the usual dose. When the CYP3A4 inhibitor is withdrawn from the combination therapy, the aripiprazole dose should then be increased . Dosage adjustment for patients taking aripiprazole concomitantly with strong CYP3A4 inhibitors: [see DRUG INTERACTIONS ] (7.1) When concomitant administration of potential CYP2D6 inhibitors such as quinidine, fluoxetine, or paroxetine with aripiprazole occurs, aripiprazole dose should be reduced at least to one-half of its normal dose. When the CYP2D6 inhibitor is withdrawn from the combination therapy, the aripiprazole dose should then be increased . When adjunctive ABILIFY is administered to patients with major depressive disorder, ABILIFY should be administered without dosage adjustment as specified in . Dosage adjustment for patients taking aripiprazole concomitantly with potential CYP2D6 inhibitors: [see DRUG INTERACTIONS ] (7.1) DOSAGE AND ADMINISTRATION (2.3) When concomitant administration of aripiprazole with strong inhibitors of CYP3A4 (such as ketoconazole or clarithromycin) and CYP2D6 (such as quinidine, fluoxetine, or paroxetine) is indicated, the aripiprazole dose should be reduced to one-quarter (25%) of the usual dose. When the CYP3A4 and/or CYP2D6 inhibitor is withdrawn from the combination therapy, the aripiprazole dose should be increased Dosing recommendation in patients taking aripiprazole concomitantly with strong CYP3A4 and CYP2D6 inhibitors: [see DRUG INTERACTIONS ]. (7.1) Patients who may be receiving a combination of strong, moderate, and weak inhibitors of CYP3A4 and CYP2D6 (eg, a potent CYP3A4 inhibitor and a moderate CYP2D6 inhibitor or a moderate CYP3A4 inhibitor with a moderate CYP2D6 inhibitor), the dosing may be reduced to one-quarter (25%) of the usual dose initially and then adjusted to achieve a favorable clinical response. Dosing recommendation in patients taking aripiprazole concomitantly with strong, moderate, or weak inhibitors of CYP3A4 and CYP2D6: The aripiprazole dose in PM patients should initially be reduced to one-half (50%) of the usual dose and then adjusted to achieve a favorable clinical response. The dose of aripiprazole for PM patients who are administered a strong CYP3A4 inhibitor should be reduced to one-quarter (25%) of the usual dose . Dosing recommendation in patients who are classified as CYP2D6 poor metabolizers (PM): [see CLINICAL PHARMACOLOGY ] (12.3) When a potential CYP3A4 inducer such as carbamazepine is added to aripiprazole therapy, the aripiprazole dose should be doubled. Additional dose increases should be based on clinical evaluation. When the CYP3A4 inducer is withdrawn from the combination therapy, the aripiprazole dose should be reduced to 10 mg to 15 mg . Dosage adjustment for patients taking potential CYP3A4 inducers: [see DRUG INTERACTIONS ] (7.1)2.7 Dosing of Oral Solution
The oral solution can be substituted for tablets on a mg-per-mg basis up to the 25 mg dose level. Patients receiving 30 mg tablets should receive 25 mg of the solution . [see CLINICAL PHARMACOLOGY ] (12.3)
2.8 Dosing of Orally Disintegrating Tablets
The dosing for ABILIFY Orally Disintegrating Tablets is the same as for the oral tablets . [see DOSAGE AND ADMINISTRATION , , , and ] (2.12.22.32.4)
2.1 Schizophrenia
Adults
Dose Selection: The recommended starting and target dose for ABILIFY is 10 mg/day or 15 mg/day administered on a once-a-day schedule without regard to meals. ABILIFY has been systematically evaluated and shown to be effective in a dose range of 10 mg/day to 30 mg/day, when administered as the tablet formulation; however, doses higher than 10 mg/day or 15 mg/day were not more effective than 10 mg/day or 15 mg/day. Dosage increases should generally not be made before 2 weeks, the time needed to achieve steady-state . [see CLINICAL STUDIES ] (14.1)
Maintenance Treatment: Maintenance of efficacy in schizophrenia was demonstrated in a trial involving patients with schizophrenia who had been symptomatically stable on other antipsychotic medications for periods of 3 months or longer. These patients were discontinued from those medications and randomized to either ABILIFY 15 mg/day or placebo, and observed for relapse . Patients should be periodically reassessed to determine the continued need for maintenance treatment. [see CLINICAL STUDIES ] (14.1)
Adolescents
Dose Selection: The recommended target dose of ABILIFY is 10 mg/day. Aripiprazole was studied in adolescent patients 13 to 17 years of age with schizophrenia at daily doses of 10 mg and 30 mg. The starting daily dose of the tablet formulation in these patients was 2 mg, which was titrated to 5 mg after 2 days and to the target dose of 10 mg after 2 additional days. Subsequent dose increases should be administered in 5 mg increments. The 30 mg/day dose was not shown to be more efficacious than the 10 mg/day dose. ABILIFY can be administered without regard to meals . [see CLINICAL STUDIES ] (14.1)
Maintenance Treatment: The efficacy of ABILIFY for the maintenance treatment of schizophrenia in the adolescent population has not been evaluated. While there is no body of evidence available to answer the question of how long the adolescent patient treated with ABILIFY should be maintained on the drug, maintenance efficacy can be extrapolated from adult data along with comparisons of aripiprazole pharmacokinetic parameters in adult and pediatric patients. Thus, it is generally recommended that responding patients be continued beyond the acute response, but at the lowest dose needed to maintain remission. Patients should be periodically reassessed to determine the need for maintenance treatment.
Switching from Other Antipsychotics
There are no systematically collected data to specifically address switching patients with schizophrenia from other antipsychotics to ABILIFY or concerning concomitant administration with other antipsychotics. While immediate discontinuation of the previous antipsychotic treatment may be acceptable for some patients with schizophrenia, more gradual discontinuation may be most appropriate for others. In all cases, the period of overlapping antipsychotic administration should be minimized.
Adults
Dose Selection: The recommended starting and target dose for ABILIFY is 10 mg/day or 15 mg/day administered on a once-a-day schedule without regard to meals. ABILIFY has been systematically evaluated and shown to be effective in a dose range of 10 mg/day to 30 mg/day, when administered as the tablet formulation; however, doses higher than 10 mg/day or 15 mg/day were not more effective than 10 mg/day or 15 mg/day. Dosage increases should generally not be made before 2 weeks, the time needed to achieve steady-state . [see CLINICAL STUDIES ] (14.1)
Maintenance Treatment: Maintenance of efficacy in schizophrenia was demonstrated in a trial involving patients with schizophrenia who had been symptomatically stable on other antipsychotic medications for periods of 3 months or longer. These patients were discontinued from those medications and randomized to either ABILIFY 15 mg/day or placebo, and observed for relapse . Patients should be periodically reassessed to determine the continued need for maintenance treatment. [see CLINICAL STUDIES ] (14.1)
Adolescents
Dose Selection: The recommended target dose of ABILIFY is 10 mg/day. Aripiprazole was studied in adolescent patients 13 to 17 years of age with schizophrenia at daily doses of 10 mg and 30 mg. The starting daily dose of the tablet formulation in these patients was 2 mg, which was titrated to 5 mg after 2 days and to the target dose of 10 mg after 2 additional days. Subsequent dose increases should be administered in 5 mg increments. The 30 mg/day dose was not shown to be more efficacious than the 10 mg/day dose. ABILIFY can be administered without regard to meals . [see CLINICAL STUDIES ] (14.1)
Maintenance Treatment: The efficacy of ABILIFY for the maintenance treatment of schizophrenia in the adolescent population has not been evaluated. While there is no body of evidence available to answer the question of how long the adolescent patient treated with ABILIFY should be maintained on the drug, maintenance efficacy can be extrapolated from adult data along with comparisons of aripiprazole pharmacokinetic parameters in adult and pediatric patients. Thus, it is generally recommended that responding patients be continued beyond the acute response, but at the lowest dose needed to maintain remission. Patients should be periodically reassessed to determine the need for maintenance treatment.
Switching from Other Antipsychotics
There are no systematically collected data to specifically address switching patients with schizophrenia from other antipsychotics to ABILIFY or concerning concomitant administration with other antipsychotics. While immediate discontinuation of the previous antipsychotic treatment may be acceptable for some patients with schizophrenia, more gradual discontinuation may be most appropriate for others. In all cases, the period of overlapping antipsychotic administration should be minimized.
2.2 Bipolar I Disorder
Acute Treatment of Manic and Mixed Episodes
Adults: The recommended starting dose in adults is 15 mg given once daily as monotherapy and 10 mg to 15 mg given once daily as adjunctive therapy with lithium or valproate. ABILIFY can be given without regard to meals. The recommended target dose of ABILIFY is 15 mg/day, as monotherapy or as adjunctive therapy with lithium or valproate. The dose may be increased to 30 mg/day based on clinical response. The safety of doses above 30 mg/day has not been evaluated in clinical trials.
Pediatrics: The recommended starting dose in pediatric patients (10 to 17 years) as monotherapy is 2 mg/day, with titration to 5 mg/day after 2 days, and a target dose of 10 mg/day after 2 additional days. Recommended dosing as adjunctive therapy to lithium or valproate is the same. Subsequent dose increases, if needed, should be administered in 5 mg/day increments. ABILIFY can be given without regard to meals . [see CLINICAL STUDIES ] (14.2)
Maintenance Treatment
The recommended dose for maintenance treatment, whether as monotherapy or as adjunctive therapy, is the same dose needed to stabilize patients during acute treatment, both for adult and pediatric patients. Patients should be periodically reassessed to determine the continued need for maintenance treatment [see CLINICAL STUDIES ]. (14.2)
2.3 Adjunctive Treatment of Major Depressive Disorder
Adults
Dose Selection: The recommended starting dose for ABILIFY as adjunctive treatment for patients already taking an antidepressant is 2 mg/day to 5 mg/day. The efficacy of ABILIFY as an adjunctive therapy for major depressive disorder was established within a dose range of 2 mg/day to 15 mg/day. Dose adjustments of up to 5 mg/day should occur gradually, at intervals of no less than 1 week . [see CLINICAL STUDIES ] (14.3)
Maintenance Treatment: The efficacy of ABILIFY for the adjunctive maintenance treatment of major depressive disorder has not been evaluated. While there is no body of evidence available to answer the question of how long the patient treated with ABILIFY should be maintained, patients should be periodically reassessed to determine the continued need for maintenance treatment.
Adults
Dose Selection: The recommended starting dose for ABILIFY as adjunctive treatment for patients already taking an antidepressant is 2 mg/day to 5 mg/day. The efficacy of ABILIFY as an adjunctive therapy for major depressive disorder was established within a dose range of 2 mg/day to 15 mg/day. Dose adjustments of up to 5 mg/day should occur gradually, at intervals of no less than 1 week . [see CLINICAL STUDIES ] (14.3)
Maintenance Treatment: The efficacy of ABILIFY for the adjunctive maintenance treatment of major depressive disorder has not been evaluated. While there is no body of evidence available to answer the question of how long the patient treated with ABILIFY should be maintained, patients should be periodically reassessed to determine the continued need for maintenance treatment.
2.4 Irritability Associated with Autistic Disorder
Pediatric Patients
Dose Selection: The efficacy of aripiprazole has been established in the treatment of pediatric patients 6 to 17 years of age with irritability associated with autistic disorder at doses of 5 mg/day to 15 mg/day. The dosage of ABILIFY should be individualized according to tolerability and response.
Dosing should be initiated at 2 mg/day. The dose should be increased to 5 mg/day, with subsequent increases to 10 mg/day or 15 mg/day if needed. Dose adjustments of up to 5 mg/day should occur gradually, at intervals of no less than 1 week . [see CLINICAL STUDIES ] (14.4)
. Maintenance Treatment: In a clinical trial with ABILIFY conducted in children and adolescents (6 to 17 years of age), the efficacy of ABILIFY for the maintenance treatment of irritability associated with autistic disorder was not established [see Use in Specific Populations ]. Patients should be periodically reassessed to determine the continued need for maintenance treatment (8.4)
2.5 Agitation Associated with Schizophrenia or Bipolar Mania (Intramuscular Injection)
Adults
Dose Selection: The recommended dose in these patients is 9.75 mg. The effectiveness of aripiprazole injection in controlling agitation in schizophrenia and bipolar mania was demonstrated over a dose range of 5.25 mg to 15 mg. No additional benefit was demonstrated for 15 mg compared to 9.75 mg. A lower dose of 5.25 mg may be considered when clinical factors warrant. If agitation warranting a second dose persists following the initial dose, cumulative doses up to a total of 30 mg/day may be given. However, the efficacy of repeated doses of aripiprazole injection in agitated patients has not been systematically evaluated in controlled clinical trials. The safety of total daily doses greater than 30 mg or injections given more frequently than every 2 hours have not been adequately evaluated in clinical trials . [see CLINICAL STUDIES ] (14.5)
If ongoing aripiprazole therapy is clinically indicated, oral aripiprazole in a range of 10 mg/day to 30 mg/day should replace aripiprazole injection as soon as possible . [see DOSAGE AND ADMINISTRATION and ] (2.12.2)
Administration of ABILIFY Injection
To administer ABILIFY Injection, draw up the required volume of solution into the syringe as shown in Table 1. Discard any unused portion.
Table 1: ABILIFY Injection Dosing Recommendations Single-Dose Required Volume of Solution5.25 mg
0.7 mL
9.75 mg
1.3 mL
15 mg
2 mL
ABILIFY Injection is intended for intramuscular use only. Do not administer intravenously or subcutaneously. Inject slowly, deep into the muscle mass.
Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration, whenever solution and container permit.
Adults
Dose Selection: The recommended dose in these patients is 9.75 mg. The effectiveness of aripiprazole injection in controlling agitation in schizophrenia and bipolar mania was demonstrated over a dose range of 5.25 mg to 15 mg. No additional benefit was demonstrated for 15 mg compared to 9.75 mg. A lower dose of 5.25 mg may be considered when clinical factors warrant. If agitation warranting a second dose persists following the initial dose, cumulative doses up to a total of 30 mg/day may be given. However, the efficacy of repeated doses of aripiprazole injection in agitated patients has not been systematically evaluated in controlled clinical trials. The safety of total daily doses greater than 30 mg or injections given more frequently than every 2 hours have not been adequately evaluated in clinical trials . [see CLINICAL STUDIES ] (14.5)
If ongoing aripiprazole therapy is clinically indicated, oral aripiprazole in a range of 10 mg/day to 30 mg/day should replace aripiprazole injection as soon as possible . [see DOSAGE AND ADMINISTRATION and ] (2.12.2)
Administration of ABILIFY Injection
To administer ABILIFY Injection, draw up the required volume of solution into the syringe as shown in Table 1. Discard any unused portion.
Table 1: ABILIFY Injection Dosing Recommendations Single-Dose Required Volume of Solution5.25 mg
0.7 mL
9.75 mg
1.3 mL
15 mg
2 mL
ABILIFY Injection is intended for intramuscular use only. Do not administer intravenously or subcutaneously. Inject slowly, deep into the muscle mass.
Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration, whenever solution and container permit.
2.6 Dosage Adjustment
Dosage adjustments in adults are not routinely indicated on the basis of age, gender, race, or renal or hepatic impairment status . [see USE IN SPECIFIC POPULATIONS - ] (8.48.10)
When concomitant administration of aripiprazole with strong CYP3A4 inhibitors such as ketoconazole or clarithromycin is indicated, the aripiprazole dose should be reduced to one-half of the usual dose. When the CYP3A4 inhibitor is withdrawn from the combination therapy, the aripiprazole dose should then be increased . Dosage adjustment for patients taking aripiprazole concomitantly with strong CYP3A4 inhibitors: [see DRUG INTERACTIONS ] (7.1) When concomitant administration of potential CYP2D6 inhibitors such as quinidine, fluoxetine, or paroxetine with aripiprazole occurs, aripiprazole dose should be reduced at least to one-half of its normal dose. When the CYP2D6 inhibitor is withdrawn from the combination therapy, the aripiprazole dose should then be increased . When adjunctive ABILIFY is administered to patients with major depressive disorder, ABILIFY should be administered without dosage adjustment as specified in . Dosage adjustment for patients taking aripiprazole concomitantly with potential CYP2D6 inhibitors: [see DRUG INTERACTIONS ] (7.1) DOSAGE AND ADMINISTRATION (2.3) When concomitant administration of aripiprazole with strong inhibitors of CYP3A4 (such as ketoconazole or clarithromycin) and CYP2D6 (such as quinidine, fluoxetine, or paroxetine) is indicated, the aripiprazole dose should be reduced to one-quarter (25%) of the usual dose. When the CYP3A4 and/or CYP2D6 inhibitor is withdrawn from the combination therapy, the aripiprazole dose should be increased Dosing recommendation in patients taking aripiprazole concomitantly with strong CYP3A4 and CYP2D6 inhibitors: [see DRUG INTERACTIONS ]. (7.1) Patients who may be receiving a combination of strong, moderate, and weak inhibitors of CYP3A4 and CYP2D6 (eg, a potent CYP3A4 inhibitor and a moderate CYP2D6 inhibitor or a moderate CYP3A4 inhibitor with a moderate CYP2D6 inhibitor), the dosing may be reduced to one-quarter (25%) of the usual dose initially and then adjusted to achieve a favorable clinical response. Dosing recommendation in patients taking aripiprazole concomitantly with strong, moderate, or weak inhibitors of CYP3A4 and CYP2D6: The aripiprazole dose in PM patients should initially be reduced to one-half (50%) of the usual dose and then adjusted to achieve a favorable clinical response. The dose of aripiprazole for PM patients who are administered a strong CYP3A4 inhibitor should be reduced to one-quarter (25%) of the usual dose . Dosing recommendation in patients who are classified as CYP2D6 poor metabolizers (PM): [see CLINICAL PHARMACOLOGY ] (12.3) When a potential CYP3A4 inducer such as carbamazepine is added to aripiprazole therapy, the aripiprazole dose should be doubled. Additional dose increases should be based on clinical evaluation. When the CYP3A4 inducer is withdrawn from the combination therapy, the aripiprazole dose should be reduced to 10 mg to 15 mg . Dosage adjustment for patients taking potential CYP3A4 inducers: [see DRUG INTERACTIONS ] (7.1)2.7 Dosing of Oral Solution
The oral solution can be substituted for tablets on a mg-per-mg basis up to the 25 mg dose level. Patients receiving 30 mg tablets should receive 25 mg of the solution . [see CLINICAL PHARMACOLOGY ] (12.3)
2.8 Dosing of Orally Disintegrating Tablets
The dosing for ABILIFY Orally Disintegrating Tablets is the same as for the oral tablets . [see DOSAGE AND ADMINISTRATION , , , and ] (2.12.22.32.4)
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Metoprolol Tartrate
Hypertension
Individualize the dosage of metoprolol tartrate tablets. Metoprolol tartrate tablets should be taken with or immediately following meals.
The usual initial dosage of metoprolol tartrate tablets is 100 mg daily in single or divided doses, whether used alone or added to a diuretic. Increase the dosage at weekly (or longer) intervals until optimum blood pressure reduction is achieved. In general, the maximum effect of any given dosage level will be apparent after 1 week of therapy. The effective dosage range of metoprolol tartrate tablets is 100-450 mg per day. Dosages above 450 mg per day have not been studied. While once-daily dosing is effective and can maintain a reduction in blood pressure throughout the day, lower doses (especially 100 mg) may not maintain a full effect at the end of the 24-hour period, and larger or more frequent daily doses may be required. This can be evaluated by measuring blood pressure near the end of the dosing interval to determine whether satisfactory control is being maintained throughout the day. Beta selectivity diminishes as the dose of metoprolol tartrate is increased. 1
Angina Pectoris
The dosage of metoprolol tartrate tablets should be individualized. Metoprolol tartrate tablets should be taken with or immediately following meals.
The usual initial dosage of metoprolol tartrate tablets is 100 mg daily, given in two divided doses. Gradually increase the dosage at weekly intervals until optimum clinical response has been obtained or there is pronounced slowing of the heart rate. The effective dosage range of metoprolol tartrate tablets is 100-400 mg per day. Dosages above 400 mg per day have not been studied. If treatment is to be discontinued, gradually decrease the dosage over a period of 1-2 weeks (see ). WARNINGS
Myocardial Infarction
Early Treatment:
During the early phase of definite or suspected acute myocardial infarction, initiate treatment with metoprolol tartrate as soon as possible after the patient's arrival in the hospital. Such treatment should be initiated in a coronary care or similar unit immediately after the patient's hemodynamic condition has stabilized.
Begin treatment in this early phase with the intravenous administration of three bolus injections of 5 mg of metoprolol tartrate each; give the injections at approximately 2-minute intervals. During the intravenous administration of metoprolol tartrate, monitor blood pressure, heart rate, and electrocardiogram.
In patients who tolerate the full intravenous dose (15 mg), initiate metoprolol tartrate tablets, 50 mg every 6 hours, 15 minutes after the last intravenous dose and continue for 48 hours. Thereafter, the maintenance dosage is 100 mg twice daily (see below). Late Treatment
Start patients who appear not to tolerate the full intravenous dose on metoprolol tartrate tablets either 25 mg or 50 mg every 6 hours (depending on the degree of intolerance) 15 minutes after the last intravenous dose or as soon as their clinical condition allows. In patients with severe intolerance, discontinue metoprolol tartrate (see ). WARNINGS
Late Treatment:
Start patients with contraindications to treatment during the early phase of suspected or definite myocardial infarction, patients who appear not to tolerate the full early treatment, and patients in whom the physician wishes to delay therapy for any other reason on metoprolol tartrate tablets, 100 mg twice daily, as soon as their clinical condition allows. Continue therapy for at least 3 months. Although the efficacy of metoprolol tartrate beyond 3 months has not been conclusively established, data from studies with other beta blockers suggest that treatment should be continued for 1-3 years.
Special populations
No pediatric studies have been performed. The safety and efficacy of metoprolol tartrate in pediatric patients have not been established. Pediatric patients:
No dose adjustment of metoprolol tartrate is required in patients with renal impairment. Renal impairment:
Metoprolol tartrate blood levels are likely to increase substantially in patients with hepatic impairment. Therefore, metoprolol tartrate should be initiated at low doses with cautious gradual dose titration according to clinical response. Hepatic impairment:
In general, use a low initial starting dose in elderly patients given their greater frequency of decreased hepatic, renal, or cardiac function, and of concomitant disease or other drug therapy. Geriatric patients (>65 years):
Method of administration:
the tablets should be swallowed un-chewed with a glass of water. Metoprolol tartrate should always be taken in standardized relation with meals. If the physician asks the patient to take metoprolol tartrate either before breakfast or with breakfast, then the patient should continue taking metoprolol tartrate with the same schedule during the course of therapy. For oral treatment,
-
Trazodone Hydrochloride
The dosage should be initiated at a low-dose and increased gradually, noting the clinical response and any evidence of intolerance. Occurrence of drowsiness may require the administration of a major portion of the daily dose at bedtime or a reduction of dosage. Trazodone hydrochloride tablets should be taken shortly after a meal or light snack.
Dose Selection
An initial dose of 150 mg/day in divided doses is suggested. The dose may be increased by 50 mg/day every 3 to 4 days. The maximum dose for outpatients usually should not exceed 400 mg/day in divided doses. Inpatients (i.e., more severely depressed patients) may be given up to but not in excess of 600 mg/day in divided doses
• Once an adequate response has been achieved, dosage may be gradually reduced, with subsequent adjustment depending on therapeutic response. • Patients should be monitored for withdrawal symptoms when discontinuing treatment with trazodone hydrochloride tablets. The dose should be gradually reduced whenever possible . [see Warnings and Precautions ( )] 5.13Maintenance Treatment
The efficacy of trazodone hydrochloride tablets for the maintenance treatment of MDD has not been evaluated. While there is no body of evidence available to answer the question of how long a patient treated with trazodone hydrochloride tablets should continue the drug, it is generally recommended that treatment be continued for several months after an initial response. Patients should be maintained on the lowest effective dose and be periodically reassessed to determine the continued need for maintenance treatment.
Important Administration Instructions
Trazodone hydrochloride tablets are scored to provide flexibility in dosing.
Trazodone hydrochloride tablets can be swallowed whole or administered as a half tablet by breaking the tablet along the score line.
-
Sertraline
Initial Treatment
Dosage for Adults
Major Depressive Disorder and Obsessive-Compulsive Disorder:
Sertraline treatment should be administered at a dose of 50 mg once daily.
Panic Disorder, Posttraumatic Stress Disorder and Social Anxiety Disorder:
Sertraline treatment should be initiated with a dose of 25 mg once daily. After one week, the dose should be increased to 50 mg once daily.
While a relationship between dose and effect has not been established for major depressive disorder, OCD, panic disorder, PTSD or social anxiety disorder, patients were dosed in a range of 50 to 200 mg/day in the clinical trials demonstrating the effectiveness of sertraline for the treatment of these indications. Consequently, a dose of 50 mg, administered once daily, is recommended as the initial therapeutic dose. Patients not responding to a 50 mg dose may benefit from dose increases up to a maximum of 200 mg/day. Given the 24 hour elimination half-life of sertraline, dose changes should not occur at intervals of less than 1 week.
Premenstrual Dysphoric Disorder:
Sertraline treatment should be initiated with a dose of 50 mg/day, either daily throughout the menstrual cycle or limited to the luteal phase of the menstrual cycle, depending on physician assessment.
While a relationship between dose and effect has not been established for PMDD, patients were dosed in the range of 50 to 150 mg/day with dose increases at the onset of each new menstrual cycle (see under ). Patients not responding to a 50 mg/day dose may benefit from dose increases (at 50 mg increments/menstrual cycle) up to 150 mg/day when dosing daily throughout the menstrual cycle, or 100 mg/day when dosing during the luteal phase of the menstrual cycle. If a 100 mg/day dose has been established with luteal phase dosing, a 50 mg/day titration step for three days should be utilized at the beginning of each luteal phase dosing period. Clinical TrialsCLINICAL PHARMACOLOGY
Sertraline should be administered once daily, either in the morning or evening.
Dosage for Pediatric Population (Children and Adolescents)
Obsessive-Compulsive Disorder:
Sertraline treatment should be initiated with a dose of 25 mg once daily in children (ages 6 to 12) and at a dose of 50 mg once daily in adolescents (ages 13 to 17).
While a relationship between dose and effect has not been established for OCD, patients were dosed in a range of 25 to 200 mg/day in the clinical trials demonstrating the effectiveness of sertraline for pediatric patients (6 to 17 years) with OCD. Patients not responding to an initial dose of 25 or 50 mg/day may benefit from dose increases up to a maximum of 200 mg/day. For children with OCD, their generally lower body weights compared to adults should be taken into consideration in advancing the dose, in order to avoid excess dosing. Given the 24 hour elimination half-life of sertraline, dose changes should not occur at intervals of less than 1 week.
Sertraline should be administered once daily, either in the morning or evening.
Maintenance/Continuation/Extended Treatment
Major Depressive Disorder
It is generally agreed that acute episodes of major depressive disorder require several months or longer of sustained pharmacologic therapy beyond response to the acute episode. Systematic evaluation of sertraline has demonstrated that its antidepressant efficacy is maintained for periods of up to 44 weeks following 8 weeks of initial treatment at a dose of 50 to 200 mg/day (mean dose of 70 mg/day) (see under ). It is not known whether the dose of sertraline needed for maintenance treatment is identical to the dose needed to achieve an initial response. Patients should be periodically reassessed to determine the need for maintenance treatment. Clinical TrialsCLINICAL PHARMACOLOGY
Posttraumatic Stress Disorder
It is generally agreed that PTSD requires several months or longer of sustained pharmacological therapy beyond response to initial treatment. Systematic evaluation of sertraline has demonstrated that its efficacy in PTSD is maintained for periods of up to 28 weeks following 24 weeks of treatment at a dose of 50 to 200 mg/day (see under ). It is not known whether the dose of sertraline needed for maintenance treatment is identical to the dose needed to achieve an initial response. Patients should be periodically reassessed to determine the need for maintenance treatment. Clinical TrialsCLINICAL PHARMACOLOGY
Social Anxiety Disorder
Social anxiety disorder is a chronic condition that may require several months or longer of sustained pharmacological therapy beyond response to initial treatment. Systematic evaluation of sertraline has demonstrated that its efficacy in social anxiety disorder is maintained for periods of up to 24 weeks following 20 weeks of treatment at a dose of 50 to 200 mg/day (see under ). Dosage adjustments should be made to maintain patients on the lowest effective dose and patients should be periodically reassessed to determine the need for long-term treatment. Clinical TrialsCLINICAL PHARMACOLOGY
Obsessive-Compulsive Disorder and Panic Disorder
It is generally agreed that OCD and Panic Disorder require several months or longer of sustained pharmacological therapy beyond response to initial treatment. Systematic evaluation of continuing sertraline for periods of up to 28 weeks in patients with OCD and Panic Disorder who have responded while taking sertraline during initial treatment phases of 24 to 52 weeks of treatment at a dose range of 50 to 200 mg/day has demonstrated a benefit of such maintenance treatment (see under ). It is not known whether the dose of sertraline needed for maintenance treatment is identical to the dose needed to achieve an initial response. Nevertheless, patients should be periodically reassessed to determine the need for maintenance treatment. Clinical TrialsCLINICAL PHARMACOLOGY
Premenstrual Dysphoric Disorder
The effectiveness of sertraline in long-term use, that is, for more than 3 menstrual cycles, has not been systematically evaluated in controlled trials. However, as women commonly report that symptoms worsen with age until relieved by the onset of menopause, it is reasonable to consider continuation of a responding patient. Dosage adjustments, which may include changes between dosage regimens (e.g., daily throughout the menstrual cycle versus during the luteal phase of the menstrual cycle), may be needed to maintain the patient on the lowest effective dosage and patients should be periodically reassessed to determine the need for continued treatment.
Switching a Patient to or from a Monoamine Oxidase Inhibitor (MAOI) Intended to Treat Psychiatric Disorders
At least 14 days should elapse between discontinuation of an MAOI intended to treat psychiatric disorders and initiation of therapy with sertraline. Conversely, at least 14 days should be allowed after stopping sertraline before starting an MAOI intended to treat psychiatric disorders (see ). CONTRAINDICATIONS
Use of Sertraline with other MAOIs such as Linezolid or Methylene Blue
Do not start sertraline in a patient who is being treated with linezolid or intravenous methylene blue because there is increased risk of serotonin syndrome. In a patient who requires more urgent treatment of a psychiatric condition, other interventions, including hospitalization, should be considered (see ). CONTRAINDICATIONS
In some cases, a patient already receiving sertraline therapy may require urgent treatment with linezolid or intravenous methylene blue. If acceptable alternatives to linezolid or intravenous methylene blue treatment are not available and the potential benefits of linezolid or intravenous methylene blue treatment are judged to outweigh the risks of serotonin syndrome in a particular patient, sertraline should be stopped promptly, and linezolid or intravenous methylene blue can be administered. The patient should be monitored for symptoms of serotonin syndrome for 2 weeks or until 24 hours after the last dose of linezolid or intravenous methylene blue, whichever comes first. Therapy with sertraline hydrochloride tablets may be resumed 24 hours after the last dose of linezolid or intravenous methylene blue (see ). WARNINGS
The risk of administering methylene blue by non-intravenous routes (such as oral tablets or by local injection) or in intravenous doses much lower than 1 mg/kg with sertraline is unclear. The clinician should, nevertheless, be aware of the possibility of emergent symptoms of serotonin syndrome with such use (see ). WARNINGS
Special Populations
Dosage for Hepatically Impaired Patients
The use of sertraline in patients with liver disease should be approached with caution. The effects of sertraline in patients with moderate and severe hepatic impairment have not been studied. If sertraline is administered to patients with liver impairment, a lower or less frequent dose should be used (see and CLINICAL PHARMACOLOGY). PRECAUTIONS
Treatment of Pregnant Women During the Third Trimester
Neonates exposed to sertraline and other SSRIs or SNRIs, late in the third trimester have developed complications requiring prolonged hospitalization, respiratory support, and tube feeding (see ). When treating pregnant women with sertraline during the third trimester, the physician should carefully consider the potential risks and benefits of treatment. PRECAUTIONS
Discontinuation of Treatment with Sertraline
Symptoms associated with discontinuation of sertraline and other SSRIs and SNRIs, have been reported (see ). Patients should be monitored for these symptoms when discontinuing treatment. A gradual reduction in the dose rather than abrupt cessation is recommended whenever possible. If intolerable symptoms occur following a decrease in the dose or upon discontinuation of treatment, then resuming the previously prescribed dose may be considered. Subsequently, the physician may continue decreasing the dose but at a more gradual rate. PRECAUTIONS
-
Abilify
2.1 Schizophrenia
Adults
Dose Selection: The recommended starting and target dose for ABILIFY is 10 mg/day or 15 mg/day administered on a once-a-day schedule without regard to meals. ABILIFY has been systematically evaluated and shown to be effective in a dose range of 10 mg/day to 30 mg/day, when administered as the tablet formulation; however, doses higher than 10 mg/day or 15 mg/day were not more effective than 10 mg/day or 15 mg/day. Dosage increases should generally not be made before 2 weeks, the time needed to achieve steady-state . [see CLINICAL STUDIES ] (14.1)
Maintenance Treatment: Maintenance of efficacy in schizophrenia was demonstrated in a trial involving patients with schizophrenia who had been symptomatically stable on other antipsychotic medications for periods of 3 months or longer. These patients were discontinued from those medications and randomized to either ABILIFY 15 mg/day or placebo, and observed for relapse . Patients should be periodically reassessed to determine the continued need for maintenance treatment. [see CLINICAL STUDIES ] (14.1)
Adolescents
Dose Selection: The recommended target dose of ABILIFY is 10 mg/day. Aripiprazole was studied in adolescent patients 13 to 17 years of age with schizophrenia at daily doses of 10 mg and 30 mg. The starting daily dose of the tablet formulation in these patients was 2 mg, which was titrated to 5 mg after 2 days and to the target dose of 10 mg after 2 additional days. Subsequent dose increases should be administered in 5 mg increments. The 30 mg/day dose was not shown to be more efficacious than the 10 mg/day dose. ABILIFY can be administered without regard to meals . [see CLINICAL STUDIES ] (14.1)
Maintenance Treatment: The efficacy of ABILIFY for the maintenance treatment of schizophrenia in the adolescent population has not been evaluated. While there is no body of evidence available to answer the question of how long the adolescent patient treated with ABILIFY should be maintained on the drug, maintenance efficacy can be extrapolated from adult data along with comparisons of aripiprazole pharmacokinetic parameters in adult and pediatric patients. Thus, it is generally recommended that responding patients be continued beyond the acute response, but at the lowest dose needed to maintain remission. Patients should be periodically reassessed to determine the need for maintenance treatment.
Switching from Other Antipsychotics
There are no systematically collected data to specifically address switching patients with schizophrenia from other antipsychotics to ABILIFY or concerning concomitant administration with other antipsychotics. While immediate discontinuation of the previous antipsychotic treatment may be acceptable for some patients with schizophrenia, more gradual discontinuation may be most appropriate for others. In all cases, the period of overlapping antipsychotic administration should be minimized.
2.2 Bipolar I Disorder
Acute Treatment of Manic and Mixed Episodes
Adults: The recommended starting dose in adults is 15 mg given once daily as monotherapy and 10 mg to 15 mg given once daily as adjunctive therapy with lithium or valproate. ABILIFY can be given without regard to meals. The recommended target dose of ABILIFY is 15 mg/day, as monotherapy or as adjunctive therapy with lithium or valproate. The dose may be increased to 30 mg/day based on clinical response. The safety of doses above 30 mg/day has not been evaluated in clinical trials.
Pediatrics: The recommended starting dose in pediatric patients (10 to 17 years) as monotherapy is 2 mg/day, with titration to 5 mg/day after 2 days, and a target dose of 10 mg/day after 2 additional days. Recommended dosing as adjunctive therapy to lithium or valproate is the same. Subsequent dose increases, if needed, should be administered in 5 mg/day increments. ABILIFY can be given without regard to meals . [see CLINICAL STUDIES ] (14.2)
Maintenance Treatment
The recommended dose for maintenance treatment, whether as monotherapy or as adjunctive therapy, is the same dose needed to stabilize patients during acute treatment, both for adult and pediatric patients. Patients should be periodically reassessed to determine the continued need for maintenance treatment [see CLINICAL STUDIES ]. (14.2)
2.3 Adjunctive Treatment of Major Depressive Disorder
Adults
Dose Selection: The recommended starting dose for ABILIFY as adjunctive treatment for patients already taking an antidepressant is 2 mg/day to 5 mg/day. The efficacy of ABILIFY as an adjunctive therapy for major depressive disorder was established within a dose range of 2 mg/day to 15 mg/day. Dose adjustments of up to 5 mg/day should occur gradually, at intervals of no less than 1 week . [see CLINICAL STUDIES ] (14.3)
Maintenance Treatment: The efficacy of ABILIFY for the adjunctive maintenance treatment of major depressive disorder has not been evaluated. While there is no body of evidence available to answer the question of how long the patient treated with ABILIFY should be maintained, patients should be periodically reassessed to determine the continued need for maintenance treatment.
2.4 Irritability Associated with Autistic Disorder
Pediatric Patients
Dose Selection: The efficacy of aripiprazole has been established in the treatment of pediatric patients 6 to 17 years of age with irritability associated with autistic disorder at doses of 5 mg/day to 15 mg/day. The dosage of ABILIFY should be individualized according to tolerability and response.
Dosing should be initiated at 2 mg/day. The dose should be increased to 5 mg/day, with subsequent increases to 10 mg/day or 15 mg/day if needed. Dose adjustments of up to 5 mg/day should occur gradually, at intervals of no less than 1 week . [see CLINICAL STUDIES ] (14.4)
. Maintenance Treatment: In a clinical trial with ABILIFY conducted in children and adolescents (6 to 17 years of age), the efficacy of ABILIFY for the maintenance treatment of irritability associated with autistic disorder was not established [see Use in Specific Populations ]. Patients should be periodically reassessed to determine the continued need for maintenance treatment (8.4)
2.5 Agitation Associated with Schizophrenia or Bipolar Mania (Intramuscular Injection)
Adults
Dose Selection: The recommended dose in these patients is 9.75 mg. The effectiveness of aripiprazole injection in controlling agitation in schizophrenia and bipolar mania was demonstrated over a dose range of 5.25 mg to 15 mg. No additional benefit was demonstrated for 15 mg compared to 9.75 mg. A lower dose of 5.25 mg may be considered when clinical factors warrant. If agitation warranting a second dose persists following the initial dose, cumulative doses up to a total of 30 mg/day may be given. However, the efficacy of repeated doses of aripiprazole injection in agitated patients has not been systematically evaluated in controlled clinical trials. The safety of total daily doses greater than 30 mg or injections given more frequently than every 2 hours have not been adequately evaluated in clinical trials . [see CLINICAL STUDIES ] (14.5)
If ongoing aripiprazole therapy is clinically indicated, oral aripiprazole in a range of 10 mg/day to 30 mg/day should replace aripiprazole injection as soon as possible . [see DOSAGE AND ADMINISTRATION and ] (2.12.2)
Administration of ABILIFY Injection
To administer ABILIFY Injection, draw up the required volume of solution into the syringe as shown in Table 1. Discard any unused portion.
Table 1: ABILIFY Injection Dosing Recommendations Single-Dose Required Volume of Solution5.25 mg
0.7 mL
9.75 mg
1.3 mL
15 mg
2 mL
ABILIFY Injection is intended for intramuscular use only. Do not administer intravenously or subcutaneously. Inject slowly, deep into the muscle mass.
Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration, whenever solution and container permit.
2.6 Dosage Adjustment
Dosage adjustments in adults are not routinely indicated on the basis of age, gender, race, or renal or hepatic impairment status . [see USE IN SPECIFIC POPULATIONS - ] (8.48.10)
When concomitant administration of aripiprazole with strong CYP3A4 inhibitors such as ketoconazole or clarithromycin is indicated, the aripiprazole dose should be reduced to one-half of the usual dose. When the CYP3A4 inhibitor is withdrawn from the combination therapy, the aripiprazole dose should then be increased . Dosage adjustment for patients taking aripiprazole concomitantly with strong CYP3A4 inhibitors: [see DRUG INTERACTIONS ] (7.1) When concomitant administration of potential CYP2D6 inhibitors such as quinidine, fluoxetine, or paroxetine with aripiprazole occurs, aripiprazole dose should be reduced at least to one-half of its normal dose. When the CYP2D6 inhibitor is withdrawn from the combination therapy, the aripiprazole dose should then be increased . When adjunctive ABILIFY is administered to patients with major depressive disorder, ABILIFY should be administered without dosage adjustment as specified in . Dosage adjustment for patients taking aripiprazole concomitantly with potential CYP2D6 inhibitors: [see DRUG INTERACTIONS ] (7.1) DOSAGE AND ADMINISTRATION (2.3) When concomitant administration of aripiprazole with strong inhibitors of CYP3A4 (such as ketoconazole or clarithromycin) and CYP2D6 (such as quinidine, fluoxetine, or paroxetine) is indicated, the aripiprazole dose should be reduced to one-quarter (25%) of the usual dose. When the CYP3A4 and/or CYP2D6 inhibitor is withdrawn from the combination therapy, the aripiprazole dose should be increased Dosing recommendation in patients taking aripiprazole concomitantly with strong CYP3A4 and CYP2D6 inhibitors: [see DRUG INTERACTIONS ]. (7.1) Patients who may be receiving a combination of strong, moderate, and weak inhibitors of CYP3A4 and CYP2D6 (eg, a potent CYP3A4 inhibitor and a moderate CYP2D6 inhibitor or a moderate CYP3A4 inhibitor with a moderate CYP2D6 inhibitor), the dosing may be reduced to one-quarter (25%) of the usual dose initially and then adjusted to achieve a favorable clinical response. Dosing recommendation in patients taking aripiprazole concomitantly with strong, moderate, or weak inhibitors of CYP3A4 and CYP2D6: The aripiprazole dose in PM patients should initially be reduced to one-half (50%) of the usual dose and then adjusted to achieve a favorable clinical response. The dose of aripiprazole for PM patients who are administered a strong CYP3A4 inhibitor should be reduced to one-quarter (25%) of the usual dose . Dosing recommendation in patients who are classified as CYP2D6 poor metabolizers (PM): [see CLINICAL PHARMACOLOGY ] (12.3) When a potential CYP3A4 inducer such as carbamazepine is added to aripiprazole therapy, the aripiprazole dose should be doubled. Additional dose increases should be based on clinical evaluation. When the CYP3A4 inducer is withdrawn from the combination therapy, the aripiprazole dose should be reduced to 10 mg to 15 mg . Dosage adjustment for patients taking potential CYP3A4 inducers: [see DRUG INTERACTIONS ] (7.1)2.7 Dosing of Oral Solution
The oral solution can be substituted for tablets on a mg-per-mg basis up to the 25 mg dose level. Patients receiving 30 mg tablets should receive 25 mg of the solution . [see CLINICAL PHARMACOLOGY ] (12.3)
2.8 Dosing of Orally Disintegrating Tablets
The dosing for ABILIFY Orally Disintegrating Tablets is the same as for the oral tablets . [see DOSAGE AND ADMINISTRATION , , , and ] (2.12.22.32.4)
2.1 Schizophrenia
Adults
Dose Selection: The recommended starting and target dose for ABILIFY is 10 mg/day or 15 mg/day administered on a once-a-day schedule without regard to meals. ABILIFY has been systematically evaluated and shown to be effective in a dose range of 10 mg/day to 30 mg/day, when administered as the tablet formulation; however, doses higher than 10 mg/day or 15 mg/day were not more effective than 10 mg/day or 15 mg/day. Dosage increases should generally not be made before 2 weeks, the time needed to achieve steady-state . [see CLINICAL STUDIES ] (14.1)
Maintenance Treatment: Maintenance of efficacy in schizophrenia was demonstrated in a trial involving patients with schizophrenia who had been symptomatically stable on other antipsychotic medications for periods of 3 months or longer. These patients were discontinued from those medications and randomized to either ABILIFY 15 mg/day or placebo, and observed for relapse . Patients should be periodically reassessed to determine the continued need for maintenance treatment. [see CLINICAL STUDIES ] (14.1)
Adolescents
Dose Selection: The recommended target dose of ABILIFY is 10 mg/day. Aripiprazole was studied in adolescent patients 13 to 17 years of age with schizophrenia at daily doses of 10 mg and 30 mg. The starting daily dose of the tablet formulation in these patients was 2 mg, which was titrated to 5 mg after 2 days and to the target dose of 10 mg after 2 additional days. Subsequent dose increases should be administered in 5 mg increments. The 30 mg/day dose was not shown to be more efficacious than the 10 mg/day dose. ABILIFY can be administered without regard to meals . [see CLINICAL STUDIES ] (14.1)
Maintenance Treatment: The efficacy of ABILIFY for the maintenance treatment of schizophrenia in the adolescent population has not been evaluated. While there is no body of evidence available to answer the question of how long the adolescent patient treated with ABILIFY should be maintained on the drug, maintenance efficacy can be extrapolated from adult data along with comparisons of aripiprazole pharmacokinetic parameters in adult and pediatric patients. Thus, it is generally recommended that responding patients be continued beyond the acute response, but at the lowest dose needed to maintain remission. Patients should be periodically reassessed to determine the need for maintenance treatment.
Switching from Other Antipsychotics
There are no systematically collected data to specifically address switching patients with schizophrenia from other antipsychotics to ABILIFY or concerning concomitant administration with other antipsychotics. While immediate discontinuation of the previous antipsychotic treatment may be acceptable for some patients with schizophrenia, more gradual discontinuation may be most appropriate for others. In all cases, the period of overlapping antipsychotic administration should be minimized.
Adults
Dose Selection: The recommended starting and target dose for ABILIFY is 10 mg/day or 15 mg/day administered on a once-a-day schedule without regard to meals. ABILIFY has been systematically evaluated and shown to be effective in a dose range of 10 mg/day to 30 mg/day, when administered as the tablet formulation; however, doses higher than 10 mg/day or 15 mg/day were not more effective than 10 mg/day or 15 mg/day. Dosage increases should generally not be made before 2 weeks, the time needed to achieve steady-state . [see CLINICAL STUDIES ] (14.1)
Maintenance Treatment: Maintenance of efficacy in schizophrenia was demonstrated in a trial involving patients with schizophrenia who had been symptomatically stable on other antipsychotic medications for periods of 3 months or longer. These patients were discontinued from those medications and randomized to either ABILIFY 15 mg/day or placebo, and observed for relapse . Patients should be periodically reassessed to determine the continued need for maintenance treatment. [see CLINICAL STUDIES ] (14.1)
Adolescents
Dose Selection: The recommended target dose of ABILIFY is 10 mg/day. Aripiprazole was studied in adolescent patients 13 to 17 years of age with schizophrenia at daily doses of 10 mg and 30 mg. The starting daily dose of the tablet formulation in these patients was 2 mg, which was titrated to 5 mg after 2 days and to the target dose of 10 mg after 2 additional days. Subsequent dose increases should be administered in 5 mg increments. The 30 mg/day dose was not shown to be more efficacious than the 10 mg/day dose. ABILIFY can be administered without regard to meals . [see CLINICAL STUDIES ] (14.1)
Maintenance Treatment: The efficacy of ABILIFY for the maintenance treatment of schizophrenia in the adolescent population has not been evaluated. While there is no body of evidence available to answer the question of how long the adolescent patient treated with ABILIFY should be maintained on the drug, maintenance efficacy can be extrapolated from adult data along with comparisons of aripiprazole pharmacokinetic parameters in adult and pediatric patients. Thus, it is generally recommended that responding patients be continued beyond the acute response, but at the lowest dose needed to maintain remission. Patients should be periodically reassessed to determine the need for maintenance treatment.
Switching from Other Antipsychotics
There are no systematically collected data to specifically address switching patients with schizophrenia from other antipsychotics to ABILIFY or concerning concomitant administration with other antipsychotics. While immediate discontinuation of the previous antipsychotic treatment may be acceptable for some patients with schizophrenia, more gradual discontinuation may be most appropriate for others. In all cases, the period of overlapping antipsychotic administration should be minimized.
2.2 Bipolar I Disorder
Acute Treatment of Manic and Mixed Episodes
Adults: The recommended starting dose in adults is 15 mg given once daily as monotherapy and 10 mg to 15 mg given once daily as adjunctive therapy with lithium or valproate. ABILIFY can be given without regard to meals. The recommended target dose of ABILIFY is 15 mg/day, as monotherapy or as adjunctive therapy with lithium or valproate. The dose may be increased to 30 mg/day based on clinical response. The safety of doses above 30 mg/day has not been evaluated in clinical trials.
Pediatrics: The recommended starting dose in pediatric patients (10 to 17 years) as monotherapy is 2 mg/day, with titration to 5 mg/day after 2 days, and a target dose of 10 mg/day after 2 additional days. Recommended dosing as adjunctive therapy to lithium or valproate is the same. Subsequent dose increases, if needed, should be administered in 5 mg/day increments. ABILIFY can be given without regard to meals . [see CLINICAL STUDIES ] (14.2)
Maintenance Treatment
The recommended dose for maintenance treatment, whether as monotherapy or as adjunctive therapy, is the same dose needed to stabilize patients during acute treatment, both for adult and pediatric patients. Patients should be periodically reassessed to determine the continued need for maintenance treatment [see CLINICAL STUDIES ]. (14.2)
2.3 Adjunctive Treatment of Major Depressive Disorder
Adults
Dose Selection: The recommended starting dose for ABILIFY as adjunctive treatment for patients already taking an antidepressant is 2 mg/day to 5 mg/day. The efficacy of ABILIFY as an adjunctive therapy for major depressive disorder was established within a dose range of 2 mg/day to 15 mg/day. Dose adjustments of up to 5 mg/day should occur gradually, at intervals of no less than 1 week . [see CLINICAL STUDIES ] (14.3)
Maintenance Treatment: The efficacy of ABILIFY for the adjunctive maintenance treatment of major depressive disorder has not been evaluated. While there is no body of evidence available to answer the question of how long the patient treated with ABILIFY should be maintained, patients should be periodically reassessed to determine the continued need for maintenance treatment.
Adults
Dose Selection: The recommended starting dose for ABILIFY as adjunctive treatment for patients already taking an antidepressant is 2 mg/day to 5 mg/day. The efficacy of ABILIFY as an adjunctive therapy for major depressive disorder was established within a dose range of 2 mg/day to 15 mg/day. Dose adjustments of up to 5 mg/day should occur gradually, at intervals of no less than 1 week . [see CLINICAL STUDIES ] (14.3)
Maintenance Treatment: The efficacy of ABILIFY for the adjunctive maintenance treatment of major depressive disorder has not been evaluated. While there is no body of evidence available to answer the question of how long the patient treated with ABILIFY should be maintained, patients should be periodically reassessed to determine the continued need for maintenance treatment.
2.4 Irritability Associated with Autistic Disorder
Pediatric Patients
Dose Selection: The efficacy of aripiprazole has been established in the treatment of pediatric patients 6 to 17 years of age with irritability associated with autistic disorder at doses of 5 mg/day to 15 mg/day. The dosage of ABILIFY should be individualized according to tolerability and response.
Dosing should be initiated at 2 mg/day. The dose should be increased to 5 mg/day, with subsequent increases to 10 mg/day or 15 mg/day if needed. Dose adjustments of up to 5 mg/day should occur gradually, at intervals of no less than 1 week . [see CLINICAL STUDIES ] (14.4)
. Maintenance Treatment: In a clinical trial with ABILIFY conducted in children and adolescents (6 to 17 years of age), the efficacy of ABILIFY for the maintenance treatment of irritability associated with autistic disorder was not established [see Use in Specific Populations ]. Patients should be periodically reassessed to determine the continued need for maintenance treatment (8.4)
2.5 Agitation Associated with Schizophrenia or Bipolar Mania (Intramuscular Injection)
Adults
Dose Selection: The recommended dose in these patients is 9.75 mg. The effectiveness of aripiprazole injection in controlling agitation in schizophrenia and bipolar mania was demonstrated over a dose range of 5.25 mg to 15 mg. No additional benefit was demonstrated for 15 mg compared to 9.75 mg. A lower dose of 5.25 mg may be considered when clinical factors warrant. If agitation warranting a second dose persists following the initial dose, cumulative doses up to a total of 30 mg/day may be given. However, the efficacy of repeated doses of aripiprazole injection in agitated patients has not been systematically evaluated in controlled clinical trials. The safety of total daily doses greater than 30 mg or injections given more frequently than every 2 hours have not been adequately evaluated in clinical trials . [see CLINICAL STUDIES ] (14.5)
If ongoing aripiprazole therapy is clinically indicated, oral aripiprazole in a range of 10 mg/day to 30 mg/day should replace aripiprazole injection as soon as possible . [see DOSAGE AND ADMINISTRATION and ] (2.12.2)
Administration of ABILIFY Injection
To administer ABILIFY Injection, draw up the required volume of solution into the syringe as shown in Table 1. Discard any unused portion.
Table 1: ABILIFY Injection Dosing Recommendations Single-Dose Required Volume of Solution5.25 mg
0.7 mL
9.75 mg
1.3 mL
15 mg
2 mL
ABILIFY Injection is intended for intramuscular use only. Do not administer intravenously or subcutaneously. Inject slowly, deep into the muscle mass.
Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration, whenever solution and container permit.
Adults
Dose Selection: The recommended dose in these patients is 9.75 mg. The effectiveness of aripiprazole injection in controlling agitation in schizophrenia and bipolar mania was demonstrated over a dose range of 5.25 mg to 15 mg. No additional benefit was demonstrated for 15 mg compared to 9.75 mg. A lower dose of 5.25 mg may be considered when clinical factors warrant. If agitation warranting a second dose persists following the initial dose, cumulative doses up to a total of 30 mg/day may be given. However, the efficacy of repeated doses of aripiprazole injection in agitated patients has not been systematically evaluated in controlled clinical trials. The safety of total daily doses greater than 30 mg or injections given more frequently than every 2 hours have not been adequately evaluated in clinical trials . [see CLINICAL STUDIES ] (14.5)
If ongoing aripiprazole therapy is clinically indicated, oral aripiprazole in a range of 10 mg/day to 30 mg/day should replace aripiprazole injection as soon as possible . [see DOSAGE AND ADMINISTRATION and ] (2.12.2)
Administration of ABILIFY Injection
To administer ABILIFY Injection, draw up the required volume of solution into the syringe as shown in Table 1. Discard any unused portion.
Table 1: ABILIFY Injection Dosing Recommendations Single-Dose Required Volume of Solution5.25 mg
0.7 mL
9.75 mg
1.3 mL
15 mg
2 mL
ABILIFY Injection is intended for intramuscular use only. Do not administer intravenously or subcutaneously. Inject slowly, deep into the muscle mass.
Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration, whenever solution and container permit.
2.6 Dosage Adjustment
Dosage adjustments in adults are not routinely indicated on the basis of age, gender, race, or renal or hepatic impairment status . [see USE IN SPECIFIC POPULATIONS - ] (8.48.10)
When concomitant administration of aripiprazole with strong CYP3A4 inhibitors such as ketoconazole or clarithromycin is indicated, the aripiprazole dose should be reduced to one-half of the usual dose. When the CYP3A4 inhibitor is withdrawn from the combination therapy, the aripiprazole dose should then be increased . Dosage adjustment for patients taking aripiprazole concomitantly with strong CYP3A4 inhibitors: [see DRUG INTERACTIONS ] (7.1) When concomitant administration of potential CYP2D6 inhibitors such as quinidine, fluoxetine, or paroxetine with aripiprazole occurs, aripiprazole dose should be reduced at least to one-half of its normal dose. When the CYP2D6 inhibitor is withdrawn from the combination therapy, the aripiprazole dose should then be increased . When adjunctive ABILIFY is administered to patients with major depressive disorder, ABILIFY should be administered without dosage adjustment as specified in . Dosage adjustment for patients taking aripiprazole concomitantly with potential CYP2D6 inhibitors: [see DRUG INTERACTIONS ] (7.1) DOSAGE AND ADMINISTRATION (2.3) When concomitant administration of aripiprazole with strong inhibitors of CYP3A4 (such as ketoconazole or clarithromycin) and CYP2D6 (such as quinidine, fluoxetine, or paroxetine) is indicated, the aripiprazole dose should be reduced to one-quarter (25%) of the usual dose. When the CYP3A4 and/or CYP2D6 inhibitor is withdrawn from the combination therapy, the aripiprazole dose should be increased Dosing recommendation in patients taking aripiprazole concomitantly with strong CYP3A4 and CYP2D6 inhibitors: [see DRUG INTERACTIONS ]. (7.1) Patients who may be receiving a combination of strong, moderate, and weak inhibitors of CYP3A4 and CYP2D6 (eg, a potent CYP3A4 inhibitor and a moderate CYP2D6 inhibitor or a moderate CYP3A4 inhibitor with a moderate CYP2D6 inhibitor), the dosing may be reduced to one-quarter (25%) of the usual dose initially and then adjusted to achieve a favorable clinical response. Dosing recommendation in patients taking aripiprazole concomitantly with strong, moderate, or weak inhibitors of CYP3A4 and CYP2D6: The aripiprazole dose in PM patients should initially be reduced to one-half (50%) of the usual dose and then adjusted to achieve a favorable clinical response. The dose of aripiprazole for PM patients who are administered a strong CYP3A4 inhibitor should be reduced to one-quarter (25%) of the usual dose . Dosing recommendation in patients who are classified as CYP2D6 poor metabolizers (PM): [see CLINICAL PHARMACOLOGY ] (12.3) When a potential CYP3A4 inducer such as carbamazepine is added to aripiprazole therapy, the aripiprazole dose should be doubled. Additional dose increases should be based on clinical evaluation. When the CYP3A4 inducer is withdrawn from the combination therapy, the aripiprazole dose should be reduced to 10 mg to 15 mg . Dosage adjustment for patients taking potential CYP3A4 inducers: [see DRUG INTERACTIONS ] (7.1)2.7 Dosing of Oral Solution
The oral solution can be substituted for tablets on a mg-per-mg basis up to the 25 mg dose level. Patients receiving 30 mg tablets should receive 25 mg of the solution . [see CLINICAL PHARMACOLOGY ] (12.3)
2.8 Dosing of Orally Disintegrating Tablets
The dosing for ABILIFY Orally Disintegrating Tablets is the same as for the oral tablets . [see DOSAGE AND ADMINISTRATION , , , and ] (2.12.22.32.4)
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Extended Phenytoin Sodium
Serum concentrations should be monitored in changing from Extended Phenytoin Sodium Capsules, USP to Prompt Phenytoin Sodium Capsules, USP, and from the sodium salt to the free acid form.
Extended phenytoin capsules, USP 100 mg are formulated with the sodium salt of phenytoin. The free acid form of phenytoin is used in other phenytoin products. Because there is approximately an 8% increase in drug content with the free acid form over that of the sodium salt, dosage adjustments and serum level monitoring may be necessary when switching from a product formulated with the free acid to a product formulated with the sodium salt and vice versa.
General:
Dosage should be individualized to provide maximum benefit. In some cases, serum blood level determinations may be necessary for optimal dosage adjustments-the clinically effective serum level is usually 10-20 mcg/mL. With recommended dosage, a period of seven to ten days may be required to achieve steady-state blood levels with phenytoin and changes in dosage (increase or decrease) should not be carried out at intervals shorter than seven to ten days.
Adult Dosage:
Divided daily dosage:
Patients who have received no previous treatment may be started on one 100-mg Extended Phenytoin Sodium Capsules, USP three times daily and the dosage then adjusted to suit individual requirements. For most adults, the satisfactory maintenance dosage will be one capsule three to four times a day. An increase up to two capsules three times a day may be made, if necessary.
Once-a-day dosage:
In adults, if seizure control is established with divided doses of three 100-mg Extended Phenytoin Sodium capsules, USP, daily, once-a-day dosage with 300 mg of extended phenytoin sodium capsules may be considered. Studies comparing divided doses of 300 mg with a single daily dose of this quantity indicated absorption, peak plasma levels, biologic half-life, difference between peak and minimum values, and urinary recovery were equivalent. Once-a-day dosage offers a convenience to the individual patient or to nursing personnel for institutionalized patients and is intended to be used only for patients requiring this amount of drug daily. A major problem in motivating noncompliant patients may also be lessened when patient can take this drug once a day. However, patients should be cautioned not to miss a dose, inadvertently.
Only extended phenytoin sodium capsules are recommended for once-a-day dosing. Inherent differences in dissolution characteristics and resultant absorption rates of phenytoin due to different manufacturing procedures and/or dosage forms preclude such recommendation for other phenytoin products. When a change in the dosage form or brand is prescribed, careful monitoring of phenytoin serum levels should be carried out.
Loading dose:
Some authorities have advocated use of an oral loading dose of phenytoin in adults who require rapid steady-state serum levels and where intravenous administration is not desirable. This dosing regimen should be reserved for patients in a clinic or hospital setting where phenytoin serum levels can be closely monitored. Patients with a history of renal or liver disease should not receive the oral loading regimen.
Initially, one gram of phenytoin capsules is divided into three doses (400 mg, 300 mg, 300 mg) and administered at two-hour intervals. Normal maintenance dosage is then instituted 24 hours after the loading dose, with frequent serum level determinations.
Pediatric Dosage:
Initially, 5 mg/kg/day in two or three equally divided doses, with subsequent dosage individualized to a maximum of 300 mg daily.
A recommended daily maintenance dosage is usually 4 to 8 mg/kg. Children over 6 years old and adolescents may require the minimum adult dose (300 mg/day).
-
Benztropine Mesylate
Benztropine mesylate tablets should be used when patients are able to take oral medication.
Because of cumulative action, therapy should be initiated with a low dose which is increased gradually at five- or six-day intervals to the smallest amount necessary for optimal relief. Increases should be made in increments of 0.5 mg, to a maximum of 6 mg, or until optimal results are obtained without excessive adverse reactions.
Postencephalitic and Idiopathic Parkinsonism
The usual daily dose is 1 to 2 mg with a range of 0.5 to 6 mg orally.
As with any agent used in parkinsonism, dosage must be individualized according to age and weight, and the type of parkinsonism being treated. Generally, older patients, and thin patients cannot tolerate large doses. Most patients with postencephalitic parkinsonism need fairly large doses and tolerate them well. Patients with a poor mental outlook are usually poor candidates for therapy.
In idiopathic parkinsonism, therapy may be initiated with a single daily dose of 0.5 to 1 mg at bedtime. In some patients, this will be adequate; in others 4 to 6 mg a day may be required.
In postencephalitic parkinsonism, therapy may be initiated in most patients with 2 mg a day in one or more doses. In highly sensitive patients, therapy may be initiated with 0.5 mg at bedtime, and increased as necessary.
Some patients experience greatest relief by taking the entire dose at bedtime; others react more favorably to divided doses, two to four times a day. Frequently, one dose a day is sufficient, and divided doses may be unnecessary or undesirable.
The long duration of action of this drug makes it particularly suitable for bedtime medication when its effects may last throughout the night, enabling patients to turn in bed during the night more easily, and to rise in the morning.
When benztropine mesylate is started, do not terminate therapy with other antiparkinsonian agents abruptly. If the other agents are to be reduced or discontinued, it must be done gradually. Many patients obtain greatest relief with combination therapy.
Benztropine mesylate may be used concomitantly with carbidopa-levodopa, or with levodopa, in which case periodic dosage adjustment may be required in order to maintain optimum response.
Drug-Induced Extrapyramidal Disorders
In treating extrapyramidal disorders due to neuroleptic drugs (e.g., phenothiazines), the recommended dosage is 1 to 4 mg once or twice a day orally. Dosage must be individualized according to the need of the patient. Some patients require more than recommended; others do not need as much.
When extrapyramidal disorders develop soon after initiation of treatment with neuroleptic drugs (e.g., phenothiazines), they are likely to be transient. One to 2 mg of benztropine mesylate tablets two or three times a day usually provides relief within one or two days. After one or two weeks the drug should be withdrawn to determine the continued need for it. If such disorders recur, benztropine mesylate can be reinstituted.
Certain drug-induced extrapyramidal disorders that develop slowly may not respond to benztropine mesylate.
Postencephalitic and Idiopathic Parkinsonism
The usual daily dose is 1 to 2 mg with a range of 0.5 to 6 mg orally.
As with any agent used in parkinsonism, dosage must be individualized according to age and weight, and the type of parkinsonism being treated. Generally, older patients, and thin patients cannot tolerate large doses. Most patients with postencephalitic parkinsonism need fairly large doses and tolerate them well. Patients with a poor mental outlook are usually poor candidates for therapy.
In idiopathic parkinsonism, therapy may be initiated with a single daily dose of 0.5 to 1 mg at bedtime. In some patients, this will be adequate; in others 4 to 6 mg a day may be required.
In postencephalitic parkinsonism, therapy may be initiated in most patients with 2 mg a day in one or more doses. In highly sensitive patients, therapy may be initiated with 0.5 mg at bedtime, and increased as necessary.
Some patients experience greatest relief by taking the entire dose at bedtime; others react more favorably to divided doses, two to four times a day. Frequently, one dose a day is sufficient, and divided doses may be unnecessary or undesirable.
The long duration of action of this drug makes it particularly suitable for bedtime medication when its effects may last throughout the night, enabling patients to turn in bed during the night more easily, and to rise in the morning.
When benztropine mesylate is started, do not terminate therapy with other antiparkinsonian agents abruptly. If the other agents are to be reduced or discontinued, it must be done gradually. Many patients obtain greatest relief with combination therapy.
Benztropine mesylate may be used concomitantly with carbidopa-levodopa, or with levodopa, in which case periodic dosage adjustment may be required in order to maintain optimum response.
Drug-Induced Extrapyramidal Disorders
In treating extrapyramidal disorders due to neuroleptic drugs (e.g., phenothiazines), the recommended dosage is 1 to 4 mg once or twice a day orally. Dosage must be individualized according to the need of the patient. Some patients require more than recommended; others do not need as much.
When extrapyramidal disorders develop soon after initiation of treatment with neuroleptic drugs (e.g., phenothiazines), they are likely to be transient. One to 2 mg of benztropine mesylate tablets two or three times a day usually provides relief within one or two days. After one or two weeks the drug should be withdrawn to determine the continued need for it. If such disorders recur, benztropine mesylate can be reinstituted.
Certain drug-induced extrapyramidal disorders that develop slowly may not respond to benztropine mesylate.
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Chlorpromazine Hydrochloride
Adjust dosage to individual and the severity of his condition, recognizing that the milligram for milligram potency relationship among all dosage forms has not been precisely established clinically. It is important to increase dosage until symptoms are controlled. Dosage should be increased more gradually in debilitated or emaciated patients. In continued therapy, gradually reduce dosage to the lowest effective maintenance level, after symptoms have been controlled for a reasonable period.
The 100 mg and 200 mg tablets are for use in severe neuropsychiatric conditions.
Elderly Patients
In general, dosages in the lower range are sufficient for most elderly patients. Since they appear to be more susceptible to hypotension and neuromuscular reactions, such patients should be observed closely. Dosage should be tailored to the individual, response carefully monitored, and dosage adjusted accordingly. Dosage should be increased more gradually in elderly patients.
Psychotic Disorders
Increase dosage gradually until symptoms are controlled. Maximum improvement may not be seen for weeks or even months. Continue optimum dosage for 2 weeks; then gradually reduce dosage to the lowest effective maintenance level. Daily dosage of 200 mg is not unusual. Some patients require higher dosages (e.g., 800 mg daily is not uncommon in discharged mental patients).
Hospitalized Patients
Acute Schizophrenic or Manic States
It is recommended that initial treatment be with chlorpromazine HCl injection until patient is controlled. Usually patient becomes quiet and cooperative within 24 to 48 hours and oral doses may be substituted and increased until the patient is calm. 500 mg a day is generally sufficient. While gradual increases to 2,000 mg a day or more may be necessary, there is usually little therapeutic gain to be achieved by exceeding 1,000 mg a day for extended periods. In general, dosage levels should be lower in the elderly, the emaciated and the debilitated.
Less Acutely Disturbed
25 mg t.i.d. Increase gradually until effective dose is reached – usually 400 mg daily.
Outpatients
10 mg t.i.d. or q.i.d., or 25 mg b.i.d. or t.i.d.
More Severe Cases
25 mg t.i.d. After 1 or 2 days, daily dosage may be increased by 20 to 50 mg at semi-weekly intervals until patient becomes calm and cooperative.
Prompt Control Of Severe Symptoms
Initial treatment should be with intramuscular chlorpromazine. Subsequent doses should be oral, 25 to 50 mg t.i.d.
Nausea and Vomiting
10 to 25 mg q4 to 6h, p.r.n., increased, if necessary.
Presurgical Apprehension
25 to 50 mg, 2 to 3 hours before the operation.
Intractable Hiccups
25 to 50 mg t.i.d. or q.i.d. If symptoms persist for 2 to 3 days, parenteral therapy is indicated.
Acute Intermittent Porphyria
25 to 50 mg t.i.d. or q.i.d. Can usually be discontinued after several weeks, but maintenance therapy may be necessary for some patients.
Chlorpromazine should generally not be used in pediatric patients under 6 months of age except where potentially lifesaving. It should not be used in conditions for which specific pediatric dosages have not been established.
Severe Behavioral Problems
Outpatients
Select route of administration according to severity of patient's condition and increase dosage gradually as required. Oral: ¼ mg/lb body weight q4 to 6h, p.r.n. (e.g., for 40 lb child – 10 mg q4 to 6h).
Hospitalized Patients
As with outpatients, start with low doses and increase dosage gradually. In severe behavior disorders higher dosages (50 to 100 mg daily and in older children, 200 mg daily or more) may be necessary. There is little evidence that behavior improvement in severely disturbed mentally retarded patients is further enhanced by doses beyond 500 mg per day.
Nausea and Vomiting
Dosage and frequency of administration should be adjusted according to the severity of the symptoms and response of the patient. The duration of activity following intramuscular administration may last up to 12 hours. Subsequent doses may be given by the same route if necessary. Oral: ¼ mg/lb body weight (e.g., 40 lb child – 10 mg q4 to 6h).
Presurgical Apprehension
¼ mg/lb body weight orally 2 to 3 hours before operation.
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Bupropion Hydrochloride
It is particularly important to administer bupropion hydrochloride extended-release tablets (SR) in a manner most likely to minimize the risk of seizure (see ). Gradual escalation in dosage is also important if agitation, motor restlessness, and insomnia, often seen during the initial days of treatment, are to be minimized. If necessary, these effects may be managed by temporary reduction of dose or the short-term administration of an intermediate to long-acting sedative hypnotic. A sedative hypnotic usually is not required beyond the first week of treatment. Insomnia may also be minimized by avoiding bedtime doses. If distressing, untoward effects supervene, dose escalation should be stopped. Bupropion hydrochloride extended-release tablets (SR) should be swallowed whole and not crushed, divided, or chewed. The usual adult target dose for bupropion hydrochloride extended-release tablets (SR) is 300 mg/day, given as 150 mg twice daily. Dosing with bupropion hydrochloride extended-release tablets (SR) should begin at 150 mg/day given as a single daily dose in the morning. If the 150 mg initial dose is adequately tolerated, an increase to the 300 mg/day target dose, given as 150 mg twice daily, may be made as early as day 4 of dosing. There should be an interval of at least 8 hours between successive doses. As with other antidepressants, the full antidepressant effect of bupropion hydrochloride extended-release tablets (SR) may not be evident until 4 weeks of treatment or longer. An increase in dosage to the maximum of 400 mg/day, given as 200 mg twice daily, may be considered for patients in whom no clinical improvement is noted after several weeks of treatment at 300 mg/day. It is generally agreed that acute episodes of depression require several months or longer of sustained pharmacological therapy beyond response to the acute episode. In a study in which patients with major depressive disorder, recurrent type, who had responded during 8 weeks of acute treatment with bupropion were assigned randomly to placebo or to the same dose of bupropion (150 mg twice daily) during 44 weeks of maintenance treatment as they had received during the acute stabilization phase, longer-term efficacy was demonstrated (see under ). Based on these limited data, it is unknown whether or not the dose of bupropion needed for maintenance treatment is identical to the dose needed to achieve an initial response. Patients should be periodically reassessed to determine the need for maintenance treatment and the appropriate dose for such treatment. Bupropion should be used with extreme caution in patients with severe hepatic cirrhosis. The dose should not exceed 100 mg every day or 150 mg every other day in these patients. Bupropion should be used with caution in patients with hepatic impairment (including mild-to-moderate hepatic cirrhosis) and a reduced frequency and/or dose should be considered in patients with mild-to-moderate hepatic cirrhosis (see , , and ). Bupropion should be used with caution in patients with renal impairment and a reduced frequency and/or dose should be considered (see and ).
General Dosing Considerations: WARNINGS Initial Treatment: Increasing the Dosage Above 300 mg/day: Maintenance Treatment: CLINICAL TRIALS CLINICAL PHARMACOLOGY Dosage Adjustment for Patients with Impaired Hepatic Function: CLINICAL PHARMACOLOGY WARNINGS PRECAUTIONS Dosage Adjustment for Patients with Impaired Renal Function: CLINICAL PHARMACOLOGY PRECAUTIONS -
Risperidone
Table 1Recommended Daily Dosage by Indication Initial Dose Titration (Increments) Target Dose Effective Dose Range Schizophrenia: adults (2.1) 2 mg 1 to 2 mg 4 to 8 mg 4 to 16 mg Schizophrenia: adolescents (2.2) 0.5 mg 0.5 to 1 mg 3 mg 1 to 6 mg Bipolar mania: adults (2.2) 2 to 3 mg 1mg 1 to 6mg 1 to 6 mg Bipolar mania: children and adolescents (2.2) 0.5 mg 0.5 to 1mg 1 to 2.5 mg 1 to 6 mg Irritability in autistic disorder (2.3) 0.25 mg Can increase to 0.5 mg by Day 4: (body weight less than 20 kg) 0.5 mg Can increase to 1 mg by Day 4: (body weight greater than or equal to 20 kg) After Day 4, at intervals of > 2 weeks: 0.25 mg (body weight less than 20 kg) 0.5 mg (body weight greater than or equal to 20 kg) 0.5 mg: (body weight less than 20 kg) 1 mg: (body weight greater than or equal to 20 kg) 0.5 to 3 mg
Severe Renal and Hepatic Impairment in Adults: use a lower starting dose of 0.5 mg twice daily.
May increase to dosages above 1.5 mg twice daily at intervals of one week or longer
2.1 Schizophrenia
Adults
Usual Initial Dose
RISPERIDONE can be administered once or twice daily. Initial dosing is 2 mg per day. May increase the dose at intervals of 24 hours or greater, in increments of 1 to 2 mg per day, as tolerated, to a recommended dose of 4 to 8 mg per day. In some patients, slower titration may be appropriate. Efficacy has been demonstrated in a range of 4 mg to 16 mg per day. However, doses above 6 mg per day for twice daily dosing were not demonstrated to be more efficacious than lower doses, were associated with more extrapyramidal symptoms and other adverse effects, and are generally not recommended. In a single study supporting once-daily dosing, the efficacy results were generally stronger for 8 mg than for 4 mg. The safety of doses above 16 mg per day has not been evaluated in clinical trials [see ]. Clinical Studies ( ) 14.1
Adolescents
The initial dose is 0.5 mg once daily, administered as a single-daily dose in the morning or evening. The dose may be adjusted at intervals of 24 hours or greater, in increments of 0.5 mg or 1 mg per day, as tolerated, to a recommended dose of 3 mg per day. Although efficacy has been demonstrated in studies of adolescent patients with schizophrenia at doses between 1 mg to 6 mg per day, no additional benefit was observed above 3 mg per day, and higher doses were associated with more adverse events. Doses higher than 6 mg per day have not been studied.
Patients experiencing persistent somnolence may benefit from administering half the daily dose twice daily.
Maintenance Therapy
While it is unknown how long a patient with schizophrenia should remain on RISPERIDONE, the effectiveness of RISPERIDONE 2 mg per day to 8 mg per day at delaying relapse was demonstrated in a controlled trial in adult patients who had been clinically stable for at least 4 weeks and were then followed for a period of 1 to 2 years [see ]. Both adult and adolescent patients who respond acutely should generally be maintained on their effective dose beyond the acute episode. Patients should be periodically reassessed to determine the need for maintenance treatment. Clinical Studies (14.1)
Reinitiation of Treatment in Patients Previously Discontinued
Although there are no data to specifically address reinitiation of treatment, it is recommended that after an interval off RISPERIDONE, the initial titration schedule should be followed.
Switching From Other Antipsychotics
There are no systematically collected data to specifically address switching schizophrenic patients from other antipsychotics to RISPERIDONE, or treating patients with concomitant antipsychotics.
2.2 Bipolar Mania
Usual Dose
Adults
The initial dose range is 2 mg to 3 mg per day. The dose may be adjusted at intervals of 24 hours or greater, in increments of 1 mg per day. The effective dose range is 1 mg to 6 mg per day, as studied in the short-term, placebo-controlled trials. In these trials, short-term (3 week) anti-manic efficacy was demonstrated in a flexible dosage range of 1 mg to 6 mg per day [see ]. RISPERIDONE doses higher than 6 mg per day were not studied. Clinical Studies ( 14.2, ) 14.3
Pediatrics
The initial dose is 0.5 mg once daily, administered as a single-daily dose in the morning or evening. The dose may be adjusted at intervals of 24 hours or greater, in increments of 0.5 mg or 1 mg per day, as tolerated, to the recommended target dose of 1mg to 2.5 mg per day. Although efficacy has been demonstrated in studies of pediatric patients with bipolar mania at doses between 0.5 mg and 6 mg per day, no additional benefit was observed above 2.5 mg per day, and higher doses were associated with more adverse events. Doses higher than 6 mg per day have not been studied.
Patients experiencing persistent somnolence may benefit from administering half the daily dose twice daily.
Maintenance Therapy
There is no body of evidence available from controlled trials to guide a clinician in the longer-term management of a patient who improves during treatment of an acute manic episode with RISPERIDONE. While it is generally agreed that pharmacological treatment beyond an acute response in mania is desirable, both for maintenance of the initial response and for prevention of new manic episodes, there are no systematically obtained data to support the use of RISPERIDONE in such longer-term treatment (i.e., beyond 3 weeks). The physician who elects to use RISPERIDONE for extended periods should periodically re-evaluate the long-term risks and benefits of the drug for the individual patient.
2.3 Irritability Associated with Autistic Disorder – Pediatrics (Children and Adolescents)
The dosage of RISPERIDONE should be individualized according to the response and tolerability of the patient. The total daily dose of RISPERIDONE can be administered once daily, or half the total daily dose can be administered twice daily.
For patients with body weight less than 20 kg, initiate dosing at 0.25 mg per day. For patients with body weight greater than or equal to 20 kg, initiate dosing at 0.5 mg per day. After a minimum of four days, the dose may be increased to the recommended dose of 0.5 mg per day for patients less than 20 kg and 1 mg per day for patients greater than or equal to 20 kg. Maintain this dose for a minimum of 14 days. In patients not achieving sufficient clinical response, the dose may be increased at intervals of 2 weeks or greater, in increments of 0.25 mg per day for patients less than 20 kg, or increments of 0.5 mg per day for patients greater than or equal to 20 kg. The effective dose range is 0.5 mg to 3 mg per day. No dosing data are available for children who weigh less than 15 kg.
Once sufficient clinical response has been achieved and maintained, consider gradually lowering the dose to achieve the optimal balance of efficacy and safety. The physician who elects to use RISPERIDONE for extended periods should periodically re-evaluate the long-term risks and benefits of the drug for the individual patient.
Patients experiencing persistent somnolence may benefit from a once-daily dose administered at bedtime or administering half the daily dose twice daily, or a reduction of the dose.
2.4 Dosing in Patients with Severe Renal or Hepatic Impairment
For patients with severe renal impairment (CLcr < 30 mL/min) or hepatic impairment (10 to 15 points on Child Pugh System), the initial starting dose is 0.5 mg twice daily. The dose may be increased in increments of 0.5 mg or less, administered twice daily. For doses above 1.5 mg twice daily, increase in intervals of one week or greater [see ]. Use in Specific Populations ( and ) 8.68.7
2.5 Dose Adjustments for Specific Drug Interactions
When RISPERIDONE is coadministered with enzyme inducers (e.g., carbamazepine), the dose of RISPERIDONE should be increased up to double the patient's usual dose. It may be necessary to decrease the RISPERIDONE dose when enzyme inducers such as carbamazepine are discontinued [see ]. Similar effect may be expected with coadministration of RISPERIDONE with other enzyme inducers (e.g., phenytoin, rifampin, and phenobarbital). Drug Interactions ( ) 7.1
When fluoxetine or paroxetine is coadministered with RISPERIDONE, the dose of RISPERIDONE should be reduced. The RISPERIDONE dose should not exceed 8 mg per day in adults when coadministered with these drugs. When initiating therapy, RISPERIDONE should be titrated slowly. It may be necessary to increase the RISPERIDONE dose when enzyme inhibitors such as fluoxetine
or paroxetine are discontinued [see ]. Drug Interactions ( ) 7.1
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Diazepam
Dosage should be individualized for maximum beneficial effect. While the usual daily dosages given below will meet the needs of most patients, there will be some who may require higher doses. In such cases dosage should be increased cautiously to avoid adverse effects.
ADULTS: USUAL DAILY DOSE Management of Anxiety Disorders and Relief of Symptoms of Anxiety Depending upon severity of symptoms – 2 mg to 10 mg, 2 to 4 times daily Symptomatic Relief in Acute Alcohol Withdrawal 10 mg, 3 or 4 times during the first 24 hours, reducing to 5 mg, 3 or 4 times daily as needed Adjunctively for Relief of Skeletal Muscle Spasm 2 mg to 10 mg, 3 or 4 times daily Adjunctively in Convulsive Disorders 2 mg to 10 mg, 2 to 4 times daily Geriatric Patients, or in the presence of debilitating disease 2 mg to 2.5 mg, 1 or 2 times daily initially; increase gradually as needed and tolerated PEDIATRIC PATIENTS: Because of varied responses to CNS-acting drugs, initiate therapy with lowest dose and increase as required. Not for use in pediatric patients under 6 months. 1 mg to 2.5 mg, 3 or 4 times daily initially; increase gradually as needed and tolerated -
Hydroxyzine Pamoate
For symptomatic relief of anxiety and tension associated with psychoneurosis and as an adjunct in organic disease states in which anxiety is manifested: in adults, 50 to 100 mg q.i.d.; children under 6 years, 50 mg daily in divided doses; and over 6 years, 50 to 100 mg daily in divided doses.
For use in the management of pruritus due to allergic conditions such as chronic urticaria and atopic and contact dermatoses, and in histamine-mediated pruritus: in adults, 25 mg t.i.d. or q.i.d.; children under 6 years, 50 mg daily in divided doses; and over 6 years, 50 to 100 mg daily in divided doses.
As a sedative when used as a premedication and following general anesthesia: 50 to 100 mg in adults, and 0.6 mg/kg in children.
When treatment is initiated by the intramuscular route of administration, subsequent doses may be administered orally.
As with all medications, the dosage should be adjusted according to the patient’s response to therapy.
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Diazepam
Dosage should be individualized for maximum beneficial effect. While the usual daily dosages given below will meet the needs of most patients, there will be some who may require higher doses. In such cases dosage should be increased cautiously to avoid adverse effects.
ADULTS: USUAL DAILY DOSE: Management of Anxiety Disorders and relief of Symptoms of Anxiety. Depending on severity of symptoms — 2 mg to 10 mg, 2 to 4 times daily Symptomatic Relief in Acute AlcoholWithdrawal. 10 mg, 3 or 4 times during the first 24 hours, reducing to 5 mg, 3 or 4 times daily as needed Adjunctively for Relief of Skeletal Muscle Spasm. 2 mg to 10 mg, 3 or 4 times daily Adjunctively in Convulsive Disorders. 2 mg to 10 mg, 2 to 4 times daily or in the presence of debilitating disease. Geriatric Patients, 2 mg to 2.5 mg, 1 or 2 times daily initially; increase gradually as needed and tolerated PEDIATRIC PATIENTS: Because of varied responses to CNS-acting drugs, initiate therapy with lowest dose and increase as required. Not for use in children under 6 months. 1 mg to 2.5 mg, 3 or 4 times daily initially; increase gradually as needed and tolerated -
Chlordiazepoxide Hydrochloride
Because of the wide range of clinical indications for chlordiazepoxide HCl, the optimum dosage varies with the diagnosis and response of the individual patient. The dosage, therefore, should be individualized for maximum beneficial effects.
ADULTS USUAL DAILY DOSERelief of Mild and Moderate Anxiety Disorders and Symptoms of Anxiety
5 mg or 10 mg, 3 or 4 times dailyRelief of Severe Anxiety Disorders and Symptoms of Anxiety
20 mg or 25 mg, 3 or 4 times daily debilitating disease., or in the presence of Geriatric Patients
5 mg, 2 to 4 times dailyPreoperative Apprehension and Anxiety
On days preceding surgery, 5 to 10 mg orally, 3 or 4 times daily. If used as preoperative medication, 50 to 100 mg IM* 1 hour prior to surgery.
PEDIATRIC PATIENTS USUAL DAILY DOSEBecause of the varied response of pediatric patients to CNS-acting drugs, therapy should be initiated with the lowest dose and increased as required. Since clinical experience in pediatric patients under 6 years of age is limited, the use of the drug in this age group is not recommended.
5 mg, 2 to 4 times daily (may be increased in some pediatric patients to 10 mg, 2 to 3 times daily)For the relief of withdrawal symptoms of acute alcoholism, the parenteral form* is usually used initially. If the drug is administered orally, the suggested initial dose is 50 to 100 mg, to be followed by repeated doses as needed until agitation is controlled — up to 300 mg per day. Dosage should then be reduced to maintenance levels.
*See package insert for Injectable Chlordiazepoxide HCl.
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Gabapentin
Gabapentin is given orally with or without food.
If gabapentin dose is reduced, discontinued, or substituted with an alternative medication, this should be done gradually over a minimum of 1 week (a longer period may be needed at the discretion of the prescriber).
Postherpetic Neuralgia
In adults with postherpetic neuralgia, gabapentin therapy may be initiated as a single 300-mg dose on Day 1, 600 mg/day on Day 2 (divided BID), and 900 mg/day on Day 3 (divided TID). The dose can subsequently be titrated up as needed for pain relief to a daily dose of 1800 mg (divided TID). In clinical studies, efficacy was demonstrated over a range of doses from 1800 mg/day to 3600 mg/day with comparable effects across the dose range. Additional benefit of using doses greater than 1800 mg/day was not demonstrated.
Epilepsy
Gabapentin is recommended for add-on therapy in patients 3 years of age and older. Effectiveness in pediatric patients below the age of 3 years has not been established.
The effective dose of gabapentin is 900 to 1800 mg/day and given in divided doses (three times a day) using 300 or 400 mg capsules. The starting dose is 300 mg three times a day. If necessary, the dose may be increased using 300 or 400 mg capsules three times a day up to 1800 mg/day. Dosages up to 2400 mg/day have been well tolerated in long-term clinical studies. Doses of 3600 mg/day have also been administered to a small number of patients for a relatively short duration, and have been well tolerated. The maximum time between doses in the TID schedule should not exceed 12 hours. Patients >12 years of age:
Pediatric Patients Age 3 to 12 years: The starting dose should range from 10 to15 mg/kg/day in 3 divided doses, and the effective dose reached by upward titration over a period of approximately 3 days. The effective dose of gabapentin in patients 5 years of age and older is 25 to 35 mg/kg/day and given in divided doses (three times a day). The effective dose in pediatric patients ages 3 and 4 years is 40 mg/kg/day and given in divided doses (three times a day) (see CLINICAL PHARMACOLOGY, Pediatrics). Dosages up to 50 mg/kg/day have been well-tolerated in a long-term clinical study. The maximum time interval between doses should not exceed 12 hours.
It is not necessary to monitor gabapentin plasma concentrations to optimize gabapentin therapy. Further, because there are no significant pharmacokinetic interactions among gabapentin and other commonly used antiepileptic drugs, the addition of gabapentin does not alter the plasma levels of these drugs appreciably.
If gabapentin is discontinued and/or an alternate anticonvulsant medication is added to the therapy, this should be done gradually over a minimum of 1 week.
Dosage in Renal Impairment
Creatinine clearance is difficult to measure in outpatients. In patients with stable renal function, creatinine clearance (C ) can be reasonably well estimated using the equation of Cockcroft and Gault: Cr
for females C = (0.85)(140-age)(weight)/[(72)(S )] CrCr
for males C = (140-age)(weight)/[(72)(S )] CrCr
in which age is in years, weight is in kilograms and S is serum creatinine in mg/dL. Cr
Dosage adjustment in patients 12 years of age with compromised renal function or undergoing hemodialysis is recommended as follows (see dosing recommendations above for effective doses in each indication). >
Table 6. Gabapentin Dosage Based on Renal Function Renal Function Creatinine Total Daily Dose Regimen Clearance Dose Range (mg) (mL/min) (mg/day) For patients with creatinine clearance <15 mL/min, reduce daily dose in proportion to creatinine clearance (e.g., patients with a creatinine clearance of 7.5 mL/min should receive one-half the daily dose that patients with a creatinine clearance of 15 mL/min receive). a Patients on hemodialysis should receive maintenance doses based on estimates of creatinine clearance as indicated in the upper portion of the table and a supplemental post-hemodialysis dose administered after each 4 hours of hemodialysis as indicated in the lower portion of the table. b ≥60 900 to 3600 300 TID 400 TID 600 TID 800 TID 1200 TID >30 to 59 400 to 1400 200 BID 300 BID 400 BID 500 BID 700 BID >15 to 29 200 to 700 200 QD 300 QD 400 QD 500 QD 700 QD 15 a 100 to 300 100 QD 125 QD 150 QD 200 QD 300 QD Post-Hemodialysis Supplemental Dose (mg) b Hemodialysis 125 b 150 b 200 b 250 b 350 bThe use of gabapentin in patients <12 years of age with compromised renal function has not been studied.
Dosage in Elderly
Because elderly patients are more likely to have decreased renal function, care should be taken in dose selection, and dose should be adjusted based on creatinine clearance values in these patients.
HOW SUPPLIED
Gabapentin Capsules, USP are supplied as follows:
100 mg — Each white and light brown capsule printed with 665 on both cap and body in black ink contains 100 mg of gabapentin, USP. Capsules are supplied in bottles of 100 with a child-resistant closure (NDC 14550-511-02) and bottles of 500 (NDC 14550-511-04) without a child-resistant closure.
300 mg — Each yellow and light brown capsule printed with 2666 on both cap and body in black ink contains 300 mg of gabapentin, USP. Capsules are supplied in bottles of 100 with a child-resistant closure (NDC 14550-512-02) and bottles of 500 (NDC 14550-512-04) without a child-resistant closure.
400 mg — Each orange and light brown capsule printed with 667 on both cap and body in black ink contains 400 mg of gabapentin, USP. Capsules are supplied in bottles of 100 with a child-resistant closure (NDC 14550-513-02) and bottles of 500 (NDC 14550-513-04) without a child-resistant closure.
Dispense in a tight, light-resistant container as defined in the USP.
Store at 20° - 25°C (68° - 77°F) [see USP Controlled Room Temperature].
Maalox is a registered trademark of Novartis Consumer Health, Inc. ®
Manufactured by:
Actavis Pharma Manufacturing Pvt. Ltd.,
Plot No. 101, 102, 107 & 108,
SIDCO Pharmaceutical Complex,
Alathur, Kanchipuram Dist–603 110,
Tamilnadu, India.
Distributed by:
Actavis Elizabeth LLC
200 Elmora Avenue
Elizabeth, NJ 07207 USA
40-9165
Revised — May 2013
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Dicyclomine Hydrochloride
Dosage must be adjusted to individual patient needs.
2.1 Oral Dosage and Administration in Adults
The recommended initial dose is 20 mg four times a day.
After one week treatment with the initial dose, the dose may be increased to 40 mg four times a day unless side effects limit dosage escalation.
If efficacy is not achieved within 2 weeks or side effects require doses below 80 mg per day, the drug should be discontinued.
Documented safety data are not available for doses above 80 mg daily for periods longer than 2 weeks.
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Furosemide
Edema
Therapy should be individualized according to patient response to gain maximal therapeutic response and to determine the minimal dose needed to maintain that response.
The usual initial dose of furosemide tablets, USP is 20 to 80 mg given as a single dose. Ordinarily a prompt diuresis ensues. If needed, the same dose can be administered 6 to 8 hours later or the dose may be increased. The dose may be raised by 20 or 40 mg and given not sooner than 6 to 8 hours after the previous dose until the desired diuretic effect has been obtained. The individually determined single dose should then be given once or twice daily (e.g., at 8 am and 2 pm). The dose of furosemide tablets, USP may be carefully titrated up to 600 mg/day in patients with clinically severe edematous states. Adults --
Edema may be most efficiently and safely mobilized by giving furosemide tablets, USP on 2 to 4 consecutive days each week.
When doses exceeding 80 mg/day are given for prolonged periods, careful clinical observation and laboratory monitoring are particularly advisable. (See ) PRECAUTIONS: Laboratory Tests
In general, dose selection for the elderly patient should be cautious, usually starting at the low end of the dosing range ( ). Geriatric patients --see PRECAUTIONS: Geriatric Use
The usual initial dose of furosemide tablets, USP in pediatric patients is 2 mg/kg body weight, given as a single dose. If the diuretic response is not satisfactory after the initial dose, dosage may be increased by 1 or 2 mg/kg no sooner than 6 to 8 hours after the previous dose. Doses greater than 6 mg/kg body weight are not recommended. For maintenance therapy in pediatric patients, the dose should be adjusted to the minimum effective level. Pediatric patients --
Hypertension
Therapy should be individualized according to the patient’s response to gain maximal therapeutic response and to determine the minimal dose needed to maintain the therapeutic response.
The usual initial dose of furosemide tablets, USP for hypertension is 80 mg, usually divided into 40 mg twice a day. Dosage should then be adjusted according to response. If response is not satisfactory, add other antihypertensive agents. Adults --
Changes in blood pressure must be carefully monitored when furosemide tablets, USP are used with other antihypertensive drugs, especially during initial therapy. To prevent excessive drop in blood pressure, the dosage of other agents should be reduced by at least 50 percent when furosemide tablets, USP are added to the regimen. As the blood pressure falls under the potentiating effect of furosemide tablets, USP a further reduction in dosage or even discontinuation of other antihypertensive drugs may be necessary.
In general, dose selection and dose adjustment for the elderly patient should be cautious, usually starting at the low end of the dosing range Geriatric patients --( ). see PRECAUTIONS: Geriatric Use
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Clonidine Hydrochloride
Adults
The dose of clonidine hydrochloride tablets, USP must be adjusted according to the patient’s individual blood pressure response. The following is a general guide to its administration.
Initial Dose
0.1 mg tablet twice daily (morning and bedtime). Elderly patients may benefit from a lower initial dose.
Maintenance Dose
Further increments of 0.1 mg per day may be made at weekly intervals if necessary until the desired response is achieved. Taking the larger portion of the oral daily dose at bedtime may minimize transient adjustment effects of dry mouth and drowsiness. The therapeutic doses most commonly employed have ranged from 0.2 mg to 0.6 mg per day given in divided doses. Studies have indicated that 2.4 mg is the maximum effective daily dose, but doses as high as this have rarely been employed.
Renal Impairment
Patients with renal impairment may benefit from a lower initial dose. Patients should be carefully monitored. Since only a minimal amount of clonidine is removed during routine hemodialysis, there is no need to give supplemental clonidine following dialysis.
Adults
The dose of clonidine hydrochloride tablets, USP must be adjusted according to the patient’s individual blood pressure response. The following is a general guide to its administration.
Initial Dose
0.1 mg tablet twice daily (morning and bedtime). Elderly patients may benefit from a lower initial dose.
Maintenance Dose
Further increments of 0.1 mg per day may be made at weekly intervals if necessary until the desired response is achieved. Taking the larger portion of the oral daily dose at bedtime may minimize transient adjustment effects of dry mouth and drowsiness. The therapeutic doses most commonly employed have ranged from 0.2 mg to 0.6 mg per day given in divided doses. Studies have indicated that 2.4 mg is the maximum effective daily dose, but doses as high as this have rarely been employed.
Renal Impairment
Patients with renal impairment may benefit from a lower initial dose. Patients should be carefully monitored. Since only a minimal amount of clonidine is removed during routine hemodialysis, there is no need to give supplemental clonidine following dialysis.
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Gabapentin
Gabapentin tablets USP are given orally with or without food. Patients should be informed that, should they break the scored 600 or 800 mg tablet in order to administer a half-tablet, they should take the unused half-tablet as the next dose. Half-tablets not used within several days of breaking the scored tablet should be discarded.
If gabapentin tablets USP dose is reduced, discontinued or substituted with an alternative medication, this should be done gradually over a minimum of 1 week (a longer period may be needed at the discretion of the prescriber).
Postherpetic Neuralgia
In adults with postherpetic neuralgia, gabapentin tablets USP therapy may be initiated as a single 300 mg dose on Day 1, 600 mg/day on Day 2 (divided BID), and 900 mg/day on Day 3 (divided TID). The dose can subsequently be titrated up as needed for pain relief to a daily dose of 1800 mg (divided TID). In clinical studies, efficacy was demonstrated over a range of doses from 1800 mg/day to 3600 mg/day with comparable effects across the dose range. Additional benefit of using doses greater than 1800 mg/day was not demonstrated.
Epilepsy
Gabapentin tablets USP are recommended for add-on therapy in patients 3 years of age and older. Effectiveness in pediatric patients below the age of 3 years has not been established.
Patients >12 years of age:
The effective dose of gabapentin tablets USP is 900 to 1800 mg/day and given in divided doses (three times a day) using 600 or 800 mg tablets. The starting dose is 300 mg three times a day. If necessary, the dose may be increased using 600 or 800 mg tablets three times a day up to 1800 mg/day. Dosages up to 2400 mg/day have been well tolerated in long-term clinical studies. Doses of 3600 mg/day have also been administered to a small number of patients for a relatively short duration, and have been well tolerated. The maximum time between doses in the TID schedule should not exceed 12 hours.
Pediatric Patients Age 3–12 years:
The starting dose should range from 10-15 mg/kg/day in 3 divided doses, and the effective dose reached by upward titration over a period of approximately 3 days. The effective dose of gabapentin tablets USP in patients 5 years of age and older is 25–35 mg/kg/day and given in divided doses (three times a day). The effective dose in pediatric patients ages 3 and 4 years is 40 mg/kg/day and given in divided doses (three times a day) (see ). Dosages up to 50 mg/kg/day have been well-tolerated in a long-term clinical study. The maximum time interval between doses should not exceed 12 hours. CLINICAL PHARMACOLOGY, Pediatric
It is not necessary to monitor gabapentin plasma concentrations to optimize gabapentin tablets USP therapy. Further, because there are no significant pharmacokinetic interactions among gabapentin tablets USP and other commonly used antiepileptic drugs, the addition of gabapentin tablets USP does not alter the plasma levels of these drugs appreciably.
If gabapentin tablets USP are discontinued and/or an alternate anticonvulsant medication is added to the therapy, this should be done gradually over a minimum of 1 week.
Dosage in Renal Impairment
Creatinine clearance is difficult to measure in outpatients. In patients with stable renal function, creatinine clearance (C ) can be reasonably well estimated using the equation of Cockcroft and Gault: Cr
for females C =(0.85)(140-age)(weight)/[(72)(S )] CrCr
for males C =(140-age)(weight)/[(72)(S )] CrCr
in which age is in years, weight is in kilograms and SCr is serum creatinine in mg/dL.
Dosage adjustment in patients ≥12 years of age with compromised renal function or undergoing hemodialysis is recommended as follows (see dosing recommendations above for effective doses in each indication).
TABLE 6. Gabapentin Tablets USP Dosage Based on Renal FunctionRenal Function Creatinine Clearance
(mL/min)
Total Daily Dose Range
(mg/day)
Dose Regimen
(mg)
≥60
900-3600
300 TID
400 TID
600 TID
800 TID
1200 TID
>30-59
400-1400
200 BID
300 BID
400 BID
500 BID
700 BID
>15-29
200-700
200 QD
300 QD
400 QD
500 QD
700 QD
15 a
100-300
100 QD
125 QD
150 QD
200 QD
300 QD
Post-Hemodialysis Supplemental Dose (mg) b
Hemodialysis
125 b
150 b
200 b
250 b
350 b
For patients with creatinine clearance <15 mL/min, reduce daily dose in proportion to creatinine clearance (e.g., patients with a creatinine clearance of 7.5 mL/min should receive one-half the daily dose that patients with a creatinine clearance of 15 mL/min receive). a
Patients on hemodialysis should receive maintenance doses based on estimates of creatinine clearance as indicated in the upper portion of the table and a supplemental post-hemodialysis dose administered after each 4 hours of hemodialysis as indicated in the lower portion of the table. b
The use of gabapentin tablets USP in patients <12 years of age with compromised renal function has not been studied.
Dosage in Elderly
Because elderly patients are more likely to have decreased renal function, care should be taken in dose selection, and dose should be adjusted based on creatinine clearance values in these patients.
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Lithium Carbonate
Acute Mania
Optimal patient response to Lithium Carbonate usually can be established and maintained with 600 mg t.i.d. Such doses will normally produce an effective serum lithium level ranging between 1.0 and 1.5 mEq/L. Dosage must be individualized according to serum levels and clinical response. Regular monitoring of the patient’s clinical state and of serum lithium levels is necessary. Serum levels should be determined twice per week during the acute phase, and until the serum level and clinical condition of the patient have been stabilized.
Long-Term Control
The desirable serum lithium levels are 0.6 to 1.2 mEq/mL. Dosage will vary from one individual to another, but usually 300 mg of Lithium Carbonate t.i.d. or q.i.d., will maintain this level. Serum lithium levels in uncomplicated cases receiving maintenance therapy during remission should be monitored at least every two months.
Patients abnormally sensitive to lithium may exhibit toxic signs at serum levels of 1.0 to 1.5 mEq/mL. Elderly patients often respond to reduced dosage, and may exhibit signs of toxicity at serum levels ordinarily tolerated by other patients.
N.B.
Blood samples for serum lithium determination should be drawn immediately prior to the next dose when lithium concentrations are relatively stable (i.e., 8 to 12 hours after the previous dose). Total reliance must not be placed on serum levels alone. Accurate patient evaluation requires both clinical and laboratory analysis.
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Citalopram Hydrobromide
Citalopram tablets should be administered once daily, in the morning or evening, with or without food.
Initial Treatment
Citalopram tablets (citalopram HBr) should be administered at an initial dose of 20 mg once daily, with an increase to a maximum dose of 40 mg/day. Dose increase should usually occur in increments of 20 mg at intervals of no less than one week. Doses above 40 mg/day are not recommended due to the risk of QT prolongation. Additionally, the only study pertinent to dose response for effectiveness did not demonstrate an advantage for the 60 mg/day dose over the 40 mg/day dose.
Special Populations
20 mg/day is the recommended dose for most elderly patients and patients with hepatic impairment, with titration to 40 mg/day only for nonresponding patients. 20 mg/day is the maximum recommended dose for CYP2C19 poor metabolizers or those patients taking cimetidine or another CYP2C19 inhibitor.
No dosage adjustment is necessary for patients with mild or moderate renal impairment. Citalopram should be used with caution in patients with severe renal impairment.
Treatment of Pregnant Women During the Third Trimester
Neonates exposed to citalopram and other SSRIs or SNRIs, late in the third trimester, have developed complications requiring prolonged hospitalization, respiratory support, and tube feeding (see When treating pregnant women with citalopram during the third trimester, the physician should carefully consider the potential risks and benefits of treatment. The physician may consider tapering citalopram in the third trimester. ). PRECAUTIONS
Maintenance Treatment
It is generally agreed that acute episodes of depression require several months or longer of sustained pharmacologic therapy. Systematic evaluation of citalopram in two studies has shown that its antidepressant efficacy is maintained for periods of up to 24 weeks following 6 or 8 weeks of initial treatment (32 weeks total). In one study, patients were assigned randomly to placebo or to the same dose of citalopram (20-60 mg/day) during maintenance treatment as they had received during the acute stabilization phase, while in the other study, patients were assigned randomly to continuation of citalopram 20 or 40 mg/day, or placebo, for maintenance treatment. In the latter study, the rates of relapse to depression were similar for the two dose groups (see under Based on these limited data, it is not known whether the dose of citalopram needed to maintain euthymia is identical to the dose needed to induce remission. If adverse reactions are bothersome, a decrease in dose to 20 mg/day can be considered. Clinical Trials). CLINICAL PHARMACOLOGY
Discontinuation of Treatment with Citalopram
Symptoms associated with discontinuation of citalopram and other SSRIs and SNRIs have been reported (see Patients should be monitored for these symptoms when discontinuing treatment. A gradual reduction in the dose rather than abrupt cessation is recommended whenever possible. If intolerable symptoms occur following a decrease in the dose or upon discontinuation of treatment, then resuming the previously prescribed dose may be considered. Subsequently, the physician may continue decreasing the dose but at a more gradual rate. ). PRECAUTIONS
Switching Patients To or From a Monoamine Oxidase Inhibitor
At least 14 days should elapse between discontinuation of an MAOI and initiation of citalopram therapy. Similarly, at least 14 days should be allowed after stopping citalopram before starting an MAOI (see and CONTRAINDICATIONS). WARNINGS
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Oxcarbazepine
All dosing should be given in a twice-a-day regimen.
Oxcarbazepine tablets should be kept out of the reach and sight of children.
Oxcarbazepine tablets can be taken with or without food [ ]. see ( ) Clinical Pharmacology12.3
2.1 Adjunctive Therapy for Adults
Treatment with oxcarbazepine tablets should be initiated with a dose of 600 mg/day, given in a twice-a-day regimen. If clinically indicated, the dose may be increased by a maximum of 600 mg/day at approximately weekly intervals; the recommended daily dose is 1200 mg/day. Daily doses above 1200 mg/day show somewhat greater effectiveness in controlled trials, but most patients were not able to tolerate the 2400 mg/day dose, primarily because of CNS effects. It is recommended that the patient be observed closely and plasma levels of the concomitant AEDs be monitored during the period of oxcarbazepine tablets titration, as these plasma levels may be altered, especially at oxcarbazepine tablets doses greater than 1200 mg/day [ ]. see ( ) Drug Interactions7.1
2.2 Conversion to Monotherapy for Adults
Patients receiving concomitant AEDs may be converted to monotherapy by initiating treatment with oxcarbazepine tablets at 600 mg/day (given in a twice-a-day regimen) while simultaneously initiating the reduction of the dose of the concomitant AEDs. The concomitant AEDs should be completely withdrawn over 3-6 weeks, while the maximum dose of oxcarbazepine tablets should be reached in about 2-4 weeks. Oxcarbazepine tablets may be increased as clinically indicated by a maximum increment of 600 mg/day at approximately weekly intervals to achieve the recommended daily dose of 2400 mg/day. A daily dose of 1200 mg/day has been shown in one study to be effective in patients in whom monotherapy has been initiated with oxcarbazepine. Patients should be observed closely during this transition phase.
2.3 Initiation of Monotherapy for Adults
Patients not currently being treated with AEDs may have monotherapy initiated with oxcarbazepine tablets. In these patients, oxcarbazepine tablets should be initiated at a dose of 600 mg/day (given in a twice-a-day regimen); the dose should be increased by 300 mg/day every third day to a dose of 1200 mg/day. Controlled trials in these patients examined the effectiveness of a 1200 mg/day dose; a dose of 2400 mg/day has been shown to be effective in patients converted from other AEDs to oxcarbazepine monotherapy (see above).
2.4 Adjunctive Therapy for Pediatric Patients (Aged 2-16 Years)
In pediatric patients aged 4-16 years, treatment should be initiated at a daily dose of 8-10 mg/kg generally not to exceed 600 mg/day, given in a twice-a-day regimen. The target maintenance dose of oxcarbazepine tablets should be achieved over two weeks, and is dependent upon patient weight, according to the following chart:
20-29 kg - 900 mg/day
29.1-39 kg - 1200 mg/day
>39 kg - 1800 mg/day
In the clinical trial, in which the intention was to reach these target doses, the median daily dose was 31 mg/kg with a range of 6-51 mg/kg.
In pediatric patients aged 2-<4 years, treatment should also be initiated at a daily dose of 8-10 mg/kg generally not to exceed 600 mg/day, given in a twice-a-day regimen. For patients under 20 kg, a starting dose of 16-20 mg/kg may be considered [ ]. The maximum maintenance dose of oxcarbazepine tablets should be achieved over 24 weeks and should not exceed 60 mg/kg/day in a twice-a-day regimen. see ( ) Clinical Pharmacology12.3
In the clinical trial in pediatric patients (2 to 4 years of age) in which the intention was to reach the target dose of 60 mg/kg/day, 50% of patients reached a final dose of at least 55 mg/kg/day.
Under adjunctive therapy (with and without enzyme-inducing AEDs), when normalized by body weight, apparent clearance (L/hr/kg) decreased when age increased such that children 2 to <4 years of age may require up to twice the oxcarbazepine dose per body weight compared to adults; and children 4 to ≤12 years of age may require a 50% higher oxcarbazepine dose per body weight compared to adults.
2.5 Conversion to Monotherapy for Pediatric Patients (Aged 4-16 Years)
Patients receiving concomitant antiepileptic drugs may be converted to monotherapy by initiating treatment with oxcarbazepine tablets at approximately 8-10 mg/kg/day given in a twice-a-day regimen, while simultaneously initiating the reduction of the dose of the concomitant antiepileptic drugs. The concomitant antiepileptic drugs can be completely withdrawn over 3-6 weeks while oxcarbazepine tablets may be increased as clinically indicated by a maximum increment of 10 mg/kg/day at approximately weekly intervals to achieve the recommended daily dose. Patients should be observed closely during this transition phase.
The recommended total daily dose of oxcarbazepine tablets is shown in the table below.
2.6 Initiation of Monotherapy for Pediatric Patients (Aged 4-16 Years)
Patients not currently being treated with antiepileptic drugs may have monotherapy initiated with oxcarbazepine tablets. In these patients, oxcarbazepine tablets should be initiated at a dose of 8-10 mg/kg/day given in a twice-a-day regimen. The dose should be increased by 5 mg/kg/day every third day to the recommended daily dose shown in the table below.
Table 1 Range of Maintenance Doses of Oxcarbazepine Tablets for Children by Weight During MonotherapyFrom
To
Weight in kg
Dose (mg/day)
Dose (mg/day)
20
600
900
25
900
1200
30
900
1200
35
900
1500
40
900
1500
45
1200
1500
50
1200
1800
55
1200
1800
60
1200
2100
65
1200
2100
70
1500
2100
2.7 Patients with Hepatic Impairment
In general, dose adjustments are not required in patients with mild-to-moderate hepatic impairment [ ] see ( ). Clinical Pharmacology12.3
2.8 Patients with Renal Impairment
In patients with impaired renal function (creatinine clearance <30 mL/min) oxcarbazepine tablets therapy should be initiated at one-half the usual starting dose (300 mg/day) and increased slowly to achieve the desired clinical response [ ] see ( ) Clinical Pharmacology12.3
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Phenytoin Sodium
Serum concentrations should be monitored in changing from Extended Phenytoin Sodium Capsules, USP to Prompt Phenytoin Sodium Capsules, USP, and from the sodium salt to the free acid form.
Extended Phenytoin Sodium Capsules USP, 100 mg are formulated with the sodium salt of phenytoin. Because there is approximately an 8% increase in drug content with the free acid form over that of the sodium salt, dosage adjustments and serum level monitoring may be necessary when switching from a product formulated with the free acid to a product formulated with the sodium salt and vice versa.
General
Dosage should be individualized to provide maximum benefit. In some cases, serum blood level determinations may be necessary for optimal dosage adjustments – the clinically effective serum level is usually 10-20 mcg/mL. With recommended dosage, a period of seven to ten days may be required to achieve steady-state blood levels with phenytoin and changes in dosage (increase or decrease) should not be carried out at intervals shorter than seven to ten days.
Adult Dosage
Divided daily dosage
Patients who have received no previous treatment may be started on one 100-mg Extended Phenytoin Sodium Capsule, USP three times daily and the dosage then adjusted to suit individual requirements. For most adults, the satisfactory maintenance dosage will be one capsule three to four times a day. An increase up to two capsules three times a day may be made, if necessary.
Once-a-day dosage
In adults, if seizure control is established with divided doses of three 100-mg extended phenytoin sodium capsules, USP daily, once-a-day dosage with 300 mg of extended phenytoin sodium capsules, USP may be considered. Studies comparing divided doses of 300 mg with a single daily dose of this quantity indicated absorption, peak plasma levels, biologic half-life, difference between peak and minimum values, and urinary recovery were equivalent. Once-a-day dosage offers a convenience to the individual patient or to nursing personnel for institutionalized patients and is intended to be used only for patients requiring this amount of drug daily. A major problem in motivating noncompliant patients may also be lessened when the patient can take this drug once a day. However, patients should be cautioned not to miss a dose, inadvertently.
Only extended phenytoin sodium capsules, USP are recommended for once-a-day dosing. Inherent differences in dissolution characteristics and resultant absorption rates of phenytoin due to different manufacturing procedures and/or dosage forms preclude such recommendation for other phenytoin products. When a change in the dosage form or brand is prescribed, careful monitoring of phenytoin serum levels should be carried out.
Loading dose
Some authorities have advocated use of an oral loading dose of phenytoin in adults who require rapid steady-state serum levels and where intravenous administration is not desirable. This dosing regimen should be reserved for patients in a clinic or hospital setting where phenytoin serum levels can be closely monitored. Patients with a history of renal or liver disease should not receive the oral loading regimen.
Initially, one gram of extended phenytoin sodium capsules, USP is divided into three doses (400 mg, 300 mg, 300 mg) and administered at two-hour intervals. Normal maintenance dosage is then instituted 24 hours after the loading dose, with frequent serum level determinations.
Dosing in Special Populations
Patients with Renal or Hepatic Disease
Due to an increased fraction of unbound phenytoin in patients with renal or hepatic disease, or in those with hypoalbuminemia, the interpretation of total phenytoin plasma concentrations should be made with caution. Unbound phenytoin concentrations may be more useful in these patient populations.
Elderly Patients
Phenytoin clearance is decreased slightly in elderly patients and lower or less frequent dosing may be required.
Pediatric
Initially, 5 mg/kg/day in two or three equally divided doses, with subsequent dosage individualized to a maximum of 300 mg daily. A recommended daily maintenance dosage is usually 4 to 8 mg/kg. Children over 6 years old and adolescents may require the minimum adult dose (300 mg/day).
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Metformin Hydrochloride
There is no fixed dosage regimen for the management of hyperglycemia in patients with type 2 diabetes with metformin hydrochloride or any other pharmacologic agent. Dosage of metformin hydrochloride must be individualized on the basis of both effectiveness and tolerance, while not exceeding the maximum recommended daily doses. The maximum recommended daily dose of metformin hydrochloride is 2550 mg in adults and 2000 mg in pediatric patients (10 to 16 years of age).
Metformin hydrochloride should be given in divided doses with meals. Metformin hydrochloride should be started at a low dose, with gradual dose escalation, both to reduce gastrointestinal side effects and to permit identification of the minimum dose required for adequate glycemic control of the patient.
During treatment initiation and dose titration (see ), fasting plasma glucose should be used to determine the therapeutic response to metformin hydrochloride and identify the minimum effective dose for the patient. Thereafter, glycosylated hemoglobin should be measured at intervals of approximately three months. Recommended Dosing ScheduleThe therapeutic goal should be to decrease both fasting plasma glucose and glycosylated hemoglobin levels to normal or near normal by using the lowest effective dose of metformin hydrochloride, either when used as monotherapy or in combination with sulfonylurea or insulin.
Monitoring of blood glucose and glycosylated hemoglobin will also permit detection of primary failure, i.e., inadequate lowering of blood glucose at the maximum recommended dose of medication, and secondary failure, i.e., loss of an adequate blood glucose lowering response after an initial period of effectiveness.
Short-term administration of metformin hydrochloride may be sufficient during periods of transient loss of control in patients usually well-controlled on diet alone.
Recommended Dosing Schedule
– In general, clinically significant responses are not seen at doses below 1500 mg per day. However, a lower recommended starting dose and gradually increased dosage is advised to minimize gastrointestinal symptoms. Adults
The usual starting dose of metformin hydrochloride is 500 mg twice a day or 850 mg once a day, given with meals. Dosage increases should be made in increments of 500 mg weekly or 850 mg every 2 weeks, up to a total of 2000 mg per day, given in divided doses. Patients can also be titrated from 500 mg twice a day to 850 mg twice a day after 2 weeks. For those patients requiring additional glycemic control, metformin hydrochloride may be given to a maximum daily dose of 2550 mg per day. Doses above 2000 mg may be better tolerated given three times a day with meals.
If higher doses of metformin are required, metformin hydrochloride should be used at total daily doses up to 2550 mg administered in divided daily doses, as described above. (See ) CLINICAL PHARMACOLOGY: Clinical Studies.
– The usual starting dose of metformin hydrochloride is 500 mg twice a day, given with meals. Dosage increases should be made in increments of 500 mg weekly up to a maximum of 2000 mg per day, given in divided doses. Pediatrics
Transfer From Other Antidiabetic Therapy
When transferring patients from standard oral hypoglycemic agents other than chlorpropamide to metformin hydrochloride, no transition period generally is necessary. When transferring patients from chlorpropamide, care should be exercised during the first two weeks because of the prolonged retention of chlorpropamide in the body, leading to overlapping drug effects and possible hypoglycemia.
Concomitant Metformin Hydrochloride and Oral Sulfonylurea Therapy in Adult Patients
If patients have not responded to four weeks of the maximum dose of metformin hydrochloride monotherapy, consideration should be given to gradual addition of an oral sulfonylurea while continuing metformin hydrochloride at the maximum dose, even if prior primary or secondary failure to a sulfonylurea has occurred. Clinical and pharmacokinetic drug-drug interaction data are currently available only for metformin plus glyburide (glibenclamide).
With concomitant metformin hydrochloride and sulfonylurea therapy, the desired control of blood glucose may be obtained by adjusting the dose of each drug. In a clinical trial of patients with type 2 diabetes and prior failure on glyburide, patients started on metformin hydrochloride 500 mg and glyburide 20 mg were titrated to 1000/20 mg, 1500/20 mg, 2000/20 mg or 2500/20 mg of metformin hydrochloride and glyburide, respectively, to reach the goal of glycemic control as measured by FPG, HbA and plasma glucose response (see ). However, attempts should be made to identify the minimum effective dose of each drug to achieve this goal. With concomitant metformin hydrochloride and sulfonylurea therapy, the risk of hypoglycemia associated with sulfonylurea therapy continues and may be increased. Appropriate precautions should be taken. (See Package Insert of the respective sulfonylurea.) 1cCLINICAL PHARMACOLOGY: Clinical Studies
If patients have not satisfactorily responded to one to three months of concomitant therapy with the maximum dose of metformin hydrochloride and the maximum dose of an oral sulfonylurea, consider therapeutic alternatives including switching to insulin with or without metformin hydrochloride.
Concomitant Metformin Hydrochloride and Insulin Therapy in Adult Patients
The current insulin dose should be continued upon initiation of metformin hydrochloride therapy. Metformin hydrochloride therapy should be initiated at 500 mg once daily in patients on insulin therapy. For patients not responding adequately, the dose of metformin hydrochloride should be increased by 500 mg after approximately 1 week and by 500 mg every week thereafter until adequate glycemic control is achieved. The maximum recommended daily dose is 2500 mg for metformin hydrochloride. It is recommended that the insulin dose be decreased by 10% to 25% when fasting plasma glucose concentrations decrease to less than 120 mg/dL in patients receiving concomitant insulin and metformin hydrochloride. Further adjustment should be individualized based on glucose-lowering response.
Specific Patient Populations
Metformin hydrochloride is not recommended for use in pregnancy. Metformin hydrochloride is not recommended in patients below the age of 10 years.
The initial and maintenance dosing of metformin hydrochloride should be conservative in patients with advanced age, due to the potential for decreased renal function in this population. Any dosage adjustment should be based on a careful assessment of renal function. Generally, elderly, debilitated, and malnourished patients should not be titrated to the maximum dose of metformin hydrochloride.
Monitoring of renal function is necessary to aid in prevention of lactic acidosis, particularly in the elderly. (See ) WARNINGS.
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Risperidone
2.1 Schizophrenia
Adults
Usual Initial Dose
Risperidone tablets can be administered once or twice daily. Initial dosing is generally 2 mg/day. Dose increases should then occur at intervals not less than 24 hours, in increments of 1-2 mg/day, as tolerated, to a recommended dose of 4-8 mg/day. In some patients, slower titration may be appropriate.Efficacy has been demonstrated in a range of 4-16 mg/day . However, doses above 6 mg/day for twice daily dosing were not demonstrated to be more efficacious than lower doses, were associated with more extrapyramidal symptoms and other adverse effects, and are generally not recommended. In a single study supporting once-daily dosing, the efficacy results were generally stronger for 8 mg than for 4 mg. The safety of doses above 16 mg/day has not been evaluated in clinical trials. [see ] Clinical Studies (14.1)
Maintenance Therapy
While it is unknown how long a patient with schizophrenia should remain on risperidone tablets, the effectiveness of risperidone tablets 2 mg/day to 8 mg/day at delaying relapse was demonstrated in a controlled trial in patients who had been clinically stable for at least 4 weeks and were then followed for a period of 1 to 2 years Patients should be periodically reassessed to determine the need for maintenance treatment with an appropriate dose. [see ]. Clinical Studies (14.1)
Adolescents
The dosage of risperidone tablets should be initiated at 0.5 mg once daily, administered as a single-daily dose in either the morning or evening. Dosage adjustments, if indicated, should occur at intervals not less than 24 hours, in increments of 0.5 or 1 mg/day, as tolerated, to a recommended dose of 3 mg/day. Although efficacy has been demonstrated in studies of adolescent patients with schizophrenia at doses between 1 and 6 mg/day, no additional benefit was seen above 3 mg/day, and higher doses were associated with more adverse events. Doses higher than 6 mg/day have not been studied.
Patients experiencing persistent somnolence may benefit from administering half the daily dose twice daily.
There are no controlled data to support the longer term use of risperidone tablets beyond 8 weeks in adolescents with schizophrenia. The physician who elects to use risperidone tablets for extended periods in adolescents with schizophrenia should periodically re-evaluate the long-term risk and benefits of the drug for the individual patient.
Reinitiation of Treatment in Patients Previously Discontinued
Although there are no data to specifically address reinitiation of treatment, it is recommended that after an interval off risperidone tablets, the initial titration schedule should be followed.
Switching From Other Antipsychotics
There are no systematically collected data to specifically address switching schizophrenic patients from other antipsychotics to risperidone tablets, or treating patients with concomitant antipsychotics. While immediate discontinuation of the previous antipsychotic treatment may be acceptable for some schizophrenic patients, more gradual discontinuation may be most appropriate for others. The period of overlapping antipsychotic administration should be minimized. When switching schizophrenic patients from depot antipsychotics, initiate risperidone tablets therapy in place of the next scheduled injection. The need for continuing existing EPS medication should be re-evaluated periodically.
2.2 Bipolar Mania
Usual Dose
Adults
Risperidone tablets should be administered on a once-daily schedule, starting with 2 mg to 3 mg per day. Dosage adjustments, if indicated, should occur at intervals of not less than 24 hours and in dosage increments/decrements of 1 mg per day, as studied in the short-term, placebo-controlled trials. In these trials, short-term (3 week) anti-manic efficacy was demonstrated in a flexible dosage range of 1-6 mg per day . Risperidone tablets doses higher than 6 mg per day were not studied. [see , ] Clinical Studies (14.214.3)
Pediatrics
The dosage of risperidone tablets should be initiated at 0.5 mg once daily, administered as a single-daily dose in either the morning or evening. Dosage adjustments, if indicated, should occur at intervals not less than 24 hours, in increments of 0.5 or 1 mg/day, as tolerated, to a recommended dose of 2.5 mg/day. Although efficacy has been demonstrated in studies of pediatric patients with bipolar mania at doses between 0.5 and 6 mg/day, no additional benefit was seen above 2.5 mg/day, and higher doses were associated with more adverse events. Doses higher than 6 mg/day have not been studied.
Patients experiencing persistent somnolence may benefit from administering half the daily dose twice daily.
Maintenance Therapy
There is no body of evidence available from controlled trials to guide a clinician in the longer-term management of a patient who improves during treatment of an acute manic episode with risperidone tablets. While it is generally agreed that pharmacological treatment beyond an acute response in mania is desirable, both for maintenance of the initial response and for prevention of new manic episodes, there are no systematically obtained data to support the use of risperidone tablets in such longer-term treatment (i.e., beyond 3 weeks). The physician who elects to use risperidone tablets for extended periods should periodically re-evaluate the long-term risks and benefits of the drug for the individual patient.
2.3 Irritability Associated with Autistic Disorder - Pediatrics (Children and Adolescents)
The safety and effectiveness of risperidone tablets in pediatric patients with autistic disorder less than 5 years of age have not been established.
The dosage of risperidone tablets should be individualized according to the response and tolerability of the patient. The total daily dose of risperidone tablets can be administered once daily, or half the total daily dose can be administered twice daily.
Dosing should be initiated at 0.25 mg per day for patients < 20 kg and 0.5 mg per day for patients ≥ 20 kg. After a minimum of four days from treatment initiation, the dose may be increased to the recommended dose of 0.5 mg per day for patients < 20 kg and 1 mg per day for patients ≥ 20 kg. This dose should be maintained for a minimum of 14 days. In patients not achieving sufficient clinical response, dose increases may be considered at ≥2-week intervals in increments of 0.25 mg per day for patients < 20 kg or 0.5 mg per day for patients ≥ 20 kg. Caution should be exercised with dosage for smaller children who weigh less than 15 kg.
In clinical trials, 90% of patients who showed a response (based on at least 25% improvement on ABC-I, ) received doses of risperidone tablets between 0.5 mg and 2.5 mg per day. The maximum daily dose of risperidone tablets in one of the pivotal trials, when the therapeutic effect reached plateau, was 1 mg in patients < 20 kg, 2.5 mg in patients ≥ 20 kg, or 3 mg in patients > 45 kg. No dosing data is available for children who weighed less than 15 kg. [see ] Clinical Studies (14.4)
Once sufficient clinical response has been achieved and maintained, consideration should be given to gradually lowering the dose to achieve the optimal balance of efficacy and safety. The physician who elects to use risperidone tablets for extended periods should periodically re-evaluate the long-term risks and benefits of the drug for the individual patient.
Patients experiencing persistent somnolence may benefit from a once-daily dose administered at bedtime or administering half the daily dose twice daily, or a reduction of the dose.
2.4 Dosage in Special Populations
The recommended initial dose is 0.5 mg twice daily in patients who are elderly or debilitated, patients with severe renal or hepatic impairment, and patients either predisposed to hypotension or for whom hypotension would pose a risk. Dosage increases in these patients should be in increments of no more than 0.5 mg twice daily. Increases to dosages above 1.5 mg twice daily should generally occur at intervals of at least 1 week. In some patients, slower titration may be medically appropriate.
Elderly or debilitated patients, and patients with renal impairment, may have less ability to eliminate risperidone tablets than normal adults. Patients with impaired hepatic function may have increases in the free fraction of risperidone, possibly resulting in an enhanced effect . Patients with a predisposition to hypotensive reactions or for whom such reactions would pose a particular risk likewise need to be titrated cautiously and carefully monitored . If a once-daily dosing regimen in the elderly or debilitated patient is being considered, it is recommended that the patient be titrated on a twice-daily regimen for 2-3 days at the target dose. Subsequent switches to a once-daily dosing regimen can be done thereafter. [seeClinical Pharmacology (12.3)][seeWarnings and Precautions (5.2,5.7,5.17)]
2.5 Co-Administration of Risperidone Tablets with Certain Other Medications
Co-administration of carbamazepine and other enzyme inducers (e.g., phenytoin, rifampin, phenobarbital) with risperidone tablets would be expected to cause decreases in the plasma concentrations of the sum of risperidone and 9-hydroxyrisperidone combined, which could lead to decreased efficacy of risperidone tablets treatment. The dose of risperidone tablets needs to be titrated accordingly for patients receiving these enzyme inducers, especially during initiation or discontinuation of therapy with these inducers . [see ] Drug Interactions (7.11)
Fluoxetine and paroxetine have been shown to increase the plasma concentration of risperidone 2.5-2.8 fold and 3-9 fold, respectively. Fluoxetine did not affect the plasma concentration of 9-hydroxyrisperidone. Paroxetine lowered the concentration of 9-hydroxyrisperidone by about 10%. The dose of risperidone tablets needs to be titrated accordingly when fluoxetine or paroxetine is co-administered . [see ] Drug Interactions (7.10)
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Carbamazepine
(SEE BELOW) TABLE
Carbamazepine suspension in combination with liquid chlorpromazine or thioridazine results in precipitate formation, and, in the case of chlorpromazine, there has been a report of a patient passing an orange rubbery precipitate in the stool following coadministration of the two drugs. (see ). Because the extent to which this occurs with other liquid medications is not known, carbamazepine suspension should not be administered simultaneously with other liquid medications or diluents. PRECAUTIONS, Drug Interactions
Monitoring of blood levels has increased the efficacy and safety of anticonvulsants (see ). Dosage should be adjusted to the needs of the individual patient. A low initial daily dosage with a gradual increase is advised. As soon as adequate control is achieved, the dosage may be reduced very gradually to the minimum effective level. Medication should be taken with meals. PRECAUTIONS, Laboratory Tests
Since a given dose of carbamazepine suspension will produce higher peak levels than the same dose given as the tablet, it is recommended to start with low doses (children 6 to 12 years: ½ teaspoon q.i.d.) and to increase slowly to avoid unwanted side effects.
Conversion of patients from oral carbamazepine tablets to carbamazepine suspension: Patients should be converted by administering the same number of mg per day in smaller, more frequent doses (i.e., b.i.d. tablets to t.i.d. suspension).
Carbamazepine extended-release tablets is an extended-release formulation for twice-a-day administration. When converting patients from carbamazepine conventional tablets to carbamazepine extended-release tablets, the same total daily mg dose of carbamazepine extended-release tablets should be administered. Carbamazepine extended-release tablets should be inspected for chips or cracks. Damaged tablets should not be consumed. Carbamazepine extended-release tablets must be swallowed whole and never crushed or chewed.
Epilepsy
(SEE ) INDICATIONS AND USAGE
Either 200 mg b.i.d. for tablets and extended-release tablets, or 1 teaspoon q.i.d. for suspension (400 mg/day). Increase at weekly intervals by adding up to 200 mg/day using a b.i.d. regimen of carbamazepine extended-release tablets or a t.i.d. or q.i.d. regimen of the other formulations until the optimal response is obtained. Dosage generally should not exceed 1000 mg daily in children 12 to 15 years of age, and 1200 mg daily in patients above 15 years of age. Doses up to 1600 mg daily have been used in adults in rare instances. Adults and children over 12 years of age-Initial:
Adjust dosage to the minimum effective level, usually 800 to 1200 mg daily. Maintenance:
Either 100 mg b.i.d. for tablets or extended-release tablets, or ½ teaspoon q.i.d. for suspension (200 mg/day). Increase at weekly intervals by adding up to 100 mg/day using a b.i.d. regimen of carbamazepine extended-release tablets or a t.i.d. or q.i.d. regimen of the other formulations until the optimal response is obtained. Dosage generally should not exceed 1000 mg daily. Adjust dosage to the minimum effective level, usually 400 to 800 mg daily. Children 6 to 12 years of age-Initial:Maintenance:
10 to 20 mg/kg/day b.i.d. or t.i.d. as tablets, or q.i.d. as suspension. Increase weekly to achieve optimal clinical response administered t.i.d. or q.i.d. Ordinarily, optimal clinical response is achieved at daily doses below 35 mg/kg. If satisfactory clinical response has not been achieved, plasma levels should be measured to determine whether or not they are in the therapeutic range. No recommendation regarding the safety of carbamazepine for use at doses above 35 mg/kg/24 hours can be made. Children under 6 years of age-Initial:Maintenance:
Carbamazepine may be used alone or with other anticonvulsants. When added to existing anticonvulsant therapy, the drug should be added gradually while the other anticonvulsants are maintained or gradually decreased, except phenytoin, which may have to be increased (see , and ). Combination Therapy:PRECAUTIONS, Drug InteractionsPregnancy Category D
Trigeminal Neuralgia
(SEE ) INDICATIONS AND USAGE
On the first day, either 100 mg b.i.d. for tablets or extended-release tablets, or ½ teaspoon q.i.d. for suspension, for a total daily dose of 200 mg. This daily dose may be increased by up to 200 mg/day using increments of 100 mg every 12 hours for tablets or extended-release tablets, or 50 mg (½ teaspoon) q.i.d. for suspension, only as needed to achieve freedom from pain. Do not exceed 1200 mg daily. Control of pain can be maintained in most patients with 400 to 800 mg daily. However, some patients may be maintained on as little as 200 mg daily, while others may require as much as 1200 mg daily. At least once every 3 months throughout the treatment period, attempts should be made to reduce the dose to the minimum effective level or even discontinue the drug. Initial:Maintenance:
Dosage Information Initial Dose Subsequent Dose Maximum Daily Dose Indication Tablet * XR † Suspension Tablet * XR † Suspension Tablet * XR † Suspension * Tablet = Chewable or conventional tablets. † XR = Carbamazepine extended-release tablets Under 6 yr Epilepsy 10 to 20 mg/kg/day b.i.d. or t.i.d. 10 to 20 mg/kg/day q.i.d. Increase weekly to achieve optimal clinical response, t.i.d. or q.i.d. Increase weekly to achieve optimal clinical response, t.i.d. or q.i.d. 35 mg/kg/24 hr (see section above) Dosage and Administration 35 mg/kg/24 hr (see section above) Dosage and Administration 6 to 12 yr 100 mg b.i.d. (200 mg/day) 100 mg b.i.d. (200 mg/day) ½ tsp q.i.d. (200 mg/day) Add up to 100 mg/day at weekly intervals, t.i.d. or q.i.d. Add 100 mg/day at weekly intervals, b.i.d. Add up to 1 tsp (100 mg)/day at weekly intervals, t.i.d. or q.i.d. 1000 mg/24 hr Over 12 yr 200 mg b.i.d. (400 mg/day) 200 mg b.i.d. (400 mg/day) 1 tsp q.i.d. (400 mg/day) Add up to 200 mg/day at weekly intervals, t.i.d. or q.i.d. Add up to 200 mg/day at weekly intervals, b.i.d. Add up to 2 tsp (200 mg)/day at weekly intervals, t.i.d. or q.i.d. 1000 mg/24 hr (12 to 15 yr) 1200 mg/24 hr (> 15 yr) 1600 mg/24 hr (adults, in rare instances) Trigeminal Neuralgia 100 mg b.i.d. (200 mg/day) 100 mg b.i.d. (200 mg/day) ½ tsp q.i.d. (200 mg/day) Add up to 200 mg/day in increments of 100 mg every 12 hr Add up to 200 mg/day in increments of 100 mg every 12 hr Add up to 2 tsp (200 mg)/day in increments of 50 mg (½ tsp) q.i.d. 1200 mg/24 hr -
Gabapentin
Gabapentin is given orally with or without food.
If gabapentin dose is reduced, discontinued or substituted with an alternative medication, this should be done gradually over a minimum of 1 week (a longer period may be needed at the discretion of the prescriber).
Postherpetic Neuralgia
In adults with postherpetic neuralgia, gabapentin therapy may be initiated as a single 300 mg dose on Day 1, 600 mg/day on Day 2 (divided BID), and 900 mg/day on Day 3 (divided TID). The dose can subsequently be titrated up as needed for pain relief to a daily dose of 1800 mg (divided TID). In clinical studies, efficacy was demonstrated over a range of doses from 1800 mg/day to 3600 mg/day with comparable effects across the dose range. Additional benefit of using doses greater than 1800 mg/day was not demonstrated.
Epilepsy
Gabapentin is recommended for add-on therapy in patients 3 years of age and older. Effectiveness in pediatric patients below the age of 3 years has not been established.
The effective dose of gabapentin is 900 to 1800 mg/day and given in divided doses (three times a day) using 300 or 400 mg capsules. The starting dose is 300 mg three times a day. If necessary, the dose may be increased using 300 or 400 mg capsules three times a day up to 1800 mg/day. Dosages up to 2400 mg/day have been well tolerated in long-term clinical studies. Doses of 3600 mg/day have also been administered to a small number of patients for a relatively short duration, and have been well tolerated. The maximum time between doses in the TID schedule should not exceed 12 hours. Patients >12 years of age:
The starting dose should range from 10 to 15 mg/kg/day in 3 divided doses, and the effective dose reached by upward titration over a period of approximately 3 days. The effective dose of gabapentin in patients 5 years of age and older is 25 to 35 mg/kg/day and given in divided doses (three times a day). The effective dose in pediatric patients ages 3 and 4 years is 40 mg/kg/day and given in divided doses (three times a day). (see ). Dosages up to 50 mg/kg/day have been well-tolerated in a long-term clinical study. The maximum time interval between doses should not exceed 12 hours. Pediatric Patients Age 3 to 12 years:CLINICAL PHARMACOLOGY, Pediatrics
It is not necessary to monitor gabapentin plasma concentrations to optimize gabapentin therapy. Further, because there are no significant pharmacokinetic interactions among gabapentin and other commonly used antiepileptic drugs, the addition of gabapentin does not alter the plasma levels of these drugs appreciably.
If gabapentin is discontinued and/or an alternate anticonvulsant medication is added to the therapy, this should be done gradually over a minimum of 1 week.
Dosage in Renal Impairment
Creatinine clearance is difficult to measure in outpatients. In patients with stable renal function, creatinine clearance (C ) can be reasonably well estimated using the equation of Cockcroft and Gault: Cr
for females C =(0.85)(140-age)(weight)/[(72)(S )] for males C =(140-age)(weight)/[(72)(S )] CrCr CrCr
where age is in years, weight is in kilograms and S is serum creatinine in mg/dL. Cr
Dosage adjustment in patients ≥12 years of age with compromised renal function or undergoing hemodialysis is recommended as follows (see dosing recommendations above for effective doses in each indication).
TABLE 6. Gabapentin Dosage Based on Renal Function Renal Function Creatinine Clearance (mL/min) Total Daily Dose Range (mg/day) Dose Regimen (mg) * For patients with creatinine clearance <15 mL/min, reduce daily dose in proportion to creatinine clearance (e.g., patients with a creatinine clearance of 7.5 mL/min should receive one-half the daily dose that patients with a creatinine clearance of 15 mL/min receive). † Patients on hemodialysis should receive maintenance doses based on estimates of creatinine clearance as indicated in the upper portion of the table and a supplemental post-hemodialysis dose administered after each 4 hours of hemodialysis as indicated in the lower portion of the table. ≥60 900 to 3600 300 TID 400 TID 600 TID 800 TID 1200 TID >30 to 59 400 to 1400 200 BID 300 BID 400 BID 500 BID 700 BID >15 to 29 200 to 700 200 QD 300 QD 400 QD 500 QD 700 QD 15 * 100 to 300 100 QD 125 QD 150 QD 200 QD 300 QD Post-Hemodialysis Supplemental Dose (mg) † Hemodialysis 125 † 150 † 200 † 250 † 350 †The use of gabapentin in patients <12 years of age with compromised renal function has not been studied.
Dosage in Elderly
Because elderly patients are more likely to have decreased renal function, care should be taken in dose selection, and dose should be adjusted based on creatinine clearance values in these patients.
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Clonazepam
Clonazepam is available as a tablet. The tablets should be administered with water by swallowing the tablet whole.
Seizure Disorders:
Adults:
The initial dose for adults with seizure disorders should not exceed 1.5 mg/day divided into three doses. Dosage may be increased in increments of 0.5 mg to 1 mg every 3 days until seizures are adequately controlled or until side effects preclude any further increase. Maintenance dosage must be individualized for each patient depending upon response. Maximum recommended daily dose is 20 mg.
The use of multiple anticonvulsants may result in an increase of depressant adverse effects. This should be considered before adding clonazepam to an existing anticonvulsant regimen.
Pediatric Patients:
Clonazepam is administered orally. In order to minimize drowsiness, the initial dose for infants and children (up to 10 years of age or 30 kg of body weight) should be between 0.01 and 0.03 mg/kg/day but not to exceed 0.05 mg/kg/day given in two or three divided doses. Dosage should be increased by no more than 0.25 mg to 0.5 mg every third day until a daily maintenance dose of 0.1 to 0.2 mg/kg of body weight has been reached, unless seizures are controlled or side effects preclude further increase. Whenever possible, the daily dose should be divided into three equal doses. If doses are not equally divided, the largest dose should be given before retiring.
Geriatric Patients:
There is no clinical trial experience with clonazepam in seizure disorder patients 65 years of age and older. In general, elderly patients should be started on low doses of clonazepam and observed closely (see ). PRECAUTIONS: Geriatric Use
Panic Disorder:
Adults:
The initial dose for adults with panic disorder is 0.25 mg bid. An increase to the target dose for most patients of 1 mg/day may be made after 3 days. The recommended dose of 1 mg/day is based on the results from a fixed dose study in which the optimal effect was seen at 1 mg/day. Higher doses of 2, 3 and 4 mg/day in that study were less effective than the 1 mg/day dose and were associated with more adverse effects. Nevertheless, it is possible that some individual patients may benefit from doses of up to a maximum dose of 4 mg/day, and in those instances, the dose may be increased in increments of 0.125 mg to 0.25 mg bid every 3 days until panic disorder is controlled or until side effects make further increases undesired. To reduce the inconvenience of somnolence, administration of one dose at bedtime may be desirable.
Treatment should be discontinued gradually, with a decrease of 0.125 mg bid every 3 days, until the drug is completely withdrawn.
There is no body of evidence available to answer the question of how long the patient treated with clonazepam should remain on it. Therefore, the physician who elects to use clonazepam for extended periods should periodically reevaluate the long-term usefulness of the drug for the individual patient.
Pediatric Patients:
There is no clinical trial experience with clonazepam in panic disorder patients under 18 years of age.
Geriatric Patients:
There is no clinical trial experience with clonazepam in panic disorder patients 65 years of age and older. In general, elderly patients should be started on low doses of clonazepam and observed closely (see ). PRECAUTIONS: Geriatric Use
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Sulfamethoxazole And Trimethoprim
Sulfamethoxazole and trimethoprim is contraindicated in pediatric patients less than 2 months of age.
Urinary Tract Infections and Shigellosis in Adults and Pediatric Patients, and Acute Otitis Media in Children:
The usual adult dosage in the treatment of urinary tract infections is 1 sulfamethoxazole and trimethoprim DS (double strength) tablet or 2 sulfamethoxazole and trimethoprim tablets every 12 hours for 10 to 14 days. An identical daily dosage is used for 5 days in the treatment of shigellosis. Adults:
The recommended dose for children with urinary tract infections or acute otitis media is 40 mg/kg sulfamethoxazole and 8 mg/kg trimethoprim per 24 hours, given in two divided doses every 12 hours for 10 days. An identical daily dosage is used for 5 days in the treatment of shigellosis. The following table is a guideline for the attainment of this dosage: Children:
Children 2 months of age or older: Weight Dose–every 12 hours lb kg Tablets 22 10 – 44 20 1 66 30 1½ 88 40 2 or 1 DS tabletWhen renal function is impaired, a reduced dosage should be employed using the following table: For Patients with Impaired Renal Function:
Creatinine Clearance (mL/min) Recommended Dosage Regimen Above 30 Usual standard regimen 15–30 ½ the usual regimen Below 15 Use not recommendedAcute Exacerbations of Chronic Bronchitis in Adults:
The usual adult dosage in the treatment of acute exacerbations of chronic bronchitis is 1 sulfamethoxazole and trimethoprim DS (double strength) tablet or 2 sulfamethoxazole and trimethoprim tablets every 12 hours for 14 days.
Pneumocystis Jiroveci Pneumonia:
Treatment: Adults and Children:
The recommended dosage for treatment of patients with documented pneumonia is 75 to 100 mg/kg sulfamethoxazole and 15 to 20 mg/kg trimethoprim per 24 hours given in equally divided doses every 6 hours for 14 to 21 days. The following table is a guideline for the upper limit of this dosage: Pneumocystis jiroveci11
Weight Dose–every 6 hours lb kg Tablets 18 8 – 35 16 1 53 24 1½ 70 32 2 or 1 DS tablet 88 40 2½ 106 48 3 or 1½ DS tablets 141 64 4 or 2 DS tablets 176 80 5 or 2½ DS tabletsFor the lower limit dose (75 mg/kg sulfamethoxazole and 15 mg/kg trimethoprim per 24 hours) administer 75% of the dose in the above table.
Prophylaxis:
Adults:
The recommended dosage for prophylaxis in adults is 1 sulfamethoxazole and trimethoprim DS (double strength) tablet daily. 12
Children:
For children, the recommended dose is 750 mg/m /day sulfamethoxazole with 150 mg/m /day trimethoprim given orally in equally divided doses twice a day, on 3 consecutive days per week. The total daily dose should not exceed 1600 mg sulfamethoxazole and 320 mg trimethoprim. The following table is a guideline for the attainment of this dosage in children: 2213
Body Surface Area Dose–every 12 hours (m ) 2 Tablets 0.26 – 0.53 ½ 1.06 1Traveler's Diarrhea in Adults:
For the treatment of traveler's diarrhea, the usual adult dosage is 1 sulfamethoxazole and trimethoprim DS (double strength) tablet or 2 sulfamethoxazole and trimethoprim tablets every 12 hours for 5 days.
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Hydrochlorothiazide
Therapy should be individualized according to patient response. Use the smallest dosage necessary to achieve the required response.
Adults
For Edema
The usual adult dosage is 25 to 100 mg daily as a single or divided dose. Many patients with edema respond to intermittent therapy, i.e., administration on alternate days or on three to five days each week. With an intermittent schedule, excessive response and the resulting undesirable electrolyte imbalance are less likely to occur.
For Control of Hypertension
The usual initial dose in adults is 25 mg daily given as a single dose. The dose may be increased to 50 mg daily, given as a single or two divided doses. Doses above 50 mg are often associated with marked reductions in serum potassium (see also Patients usually do not require doses in excess of 50 mg of hydrochlorothiazide daily when used concomitantly with other antihypertensive agents. ). PRECAUTIONS
Infants and Children
For Diuresis and For Control of Hypertension
The usual pediatric dosage is 0.5 to 1 mg per pound (1 to 2 mg/kg) per day in single or two divided doses, not to exceed 37.5 mg per day in infants up to 2 years of age or 100 mg per day in children 2 to 12 years of age. In infants less than 6 months of age, doses up to 1.5 mg per pound (3 mg/kg) per day in two divided doses may be required. (See , ) PRECAUTIONSPediatric Use
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Fluphenazine Hydrochloride
Depending on the severity and duration of symptoms, total daily dosage for psychotic patients may range initially from 2.5 to 10 mg and should be divided and given at six- to eight-hour intervals. adult
The smallest amount that will produce the desired results must be carefully determined for each individual, since optimal dosage levels of this potent drug vary from patient to patient. In general, the oral dose has been found to be approximately two to three times the parenteral dose of fluphenazine. Treatment is best instituted with a which may be increased, if necessary, until the desired clinical effects are achieved. Therapeutic effect is often achieved with doses under 20 mg daily. Patients remaining severely disturbed or inadequately controlled may require upward titration of dosage. Daily doses up to 40 mg may be necessary; controlled clinical studies have not been performed to demonstrate safety of prolonged administration of such doses. low initial dosage,
When symptoms are controlled, dosage can generally be reduced gradually to daily maintenance doses of 1 to 5 mg, often given as a single daily dose. Continued treatment is needed to achieve maximum therapeutic benefits; further adjustments in dosage may be necessary during the course of therapy to meet the patient’s requirements.
For psychotic patients who have been stabilized on a fixed daily dosage of fluphenazine hydrochloride tablets, conversion of therapy from oral fluphenazine hydrochloride dosage forms to the long-acting injectable fluphenazine decanoate may be indicated. (See fluphenazine decanoate injection labeling for conversion information.)
For patients, the suggested starting dose is 1 to 2.5 mg daily, adjusted according to the response of the patient. geriatric
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Digox
Recommended dosages of digoxin may require considerable modification because of individual sensitivity of the patient to the drug, the presence of associated conditions, or the use of concurrent medications. In selecting a dose of digoxin, the following factors must be considered: General:
The body weight of the patient. Doses should be calculated based upon lean (i.e., ideal) body weight. The patient’s renal function, preferably evaluated on the basis of estimated creatinine clearance. The patient’s age. Infants and children require different doses of digoxin than adults. Also, advanced age may be indicative of diminished renal function even in patients with normal serum creatinine concentration (i.e., below 1.5 mg/dL). Concomitant disease states, concurrent medications, or other factors likely to alter the pharmacokinetic or pharmacodynamic profile of digoxin (see ). PRECAUTIONSIn general, the dose of digoxin used should be determined on clinical grounds. However, measurement of serum digoxin concentrations can be helpful to the clinician in determining the adequacy of digoxin therapy and in assigning certain probabilities to the likelihood of digoxin intoxication. About two-thirds of adults considered adequately digitalized (without evidence of toxicity) have serum digoxin concentrations ranging from 0.8 to 2.0 ng/mL. However, digoxin may produce clinical benefits even at serum concentrations below this range. About two-thirds of adult patients with clinical toxicity have serum digoxin concentrations greater than 2.0 ng/mL. However, since one-third of patients with clinical toxicity have concentrations less than 2.0 ng/mL, values below 2.0 ng/mL do not rule out the possibility that a certain sign or symptom is related to digoxin therapy. Rarely, there are patients who are unable to tolerate digoxin at serum concentrations below 0.8 ng/mL. Consequently, the serum concentration of digoxin should always be interpreted in the overall clinical context, and an isolated measurement should not be used alone as the basis for increasing or decreasing the dose of the drug. Serum Digoxin Concentrations:
To allow adequate time for equilibration of digoxin between serum and tissue, sampling of serum concentrations should be done just before the next scheduled dose of the drug. If this is not possible, sampling should be done at least 6 to 8 hours after the last dose, regardless of the route of administration or the formulation used. On a once-daily dosing schedule, the concentration of digoxin will be 10% to 25% lower when sampled at 24 versus 8 hours, depending upon the patient’s renal function. On a twice-daily dosing schedule, there will be only minor differences in serum digoxin concentrations whether sampling is done at 8 or 12 hours after a dose.
If a discrepancy exists between the reported serum concentration and the observed clinical response, the clinician should consider the following possibilities:
Analytical problems in the assay procedure. Inappropriate serum sampling time. Administration of a digitalis glycoside other than digoxin Conditions (described in and ) causing an alteration in the sensitivity of the patient to digoxin. WARNINGSPRECAUTIONS Serum digoxin concentration may decrease acutely during periods of exercise without any associated change in clinical efficacy due to increased binding of digoxin to skeletal muscle.Digitalization may be accomplished by either of two general approaches that vary in dosage and frequency of administration, but reach the same endpoint in terms of total amount of digoxin accumulated in the body. Heart Failure: Adults:
If rapid digitalization is considered medically appropriate, it may be achieved by administering a loading dose based upon projected peak digoxin body stores. Maintenance dose can be calculated as a percentage of the loading dose. More gradual digitalization may be obtained by beginning an appropriate maintenance dose, thus allowing digoxin body stores to accumulate slowly. Steady-state serum digoxin concentrations will be achieved in approximately five half-lives of the drug for the individual patient. Depending upon the patient's renal function, this will take between 1 and 3 weeks.Peak digoxin body stores of 8 to 12 mcg/kg should provide therapeutic effect with minimum risk of toxicity in most patients with heart failure and normal sinus rhythm. Because of altered digoxin distribution and elimination, projected peak body stores for patients with renal insufficiency should be conservative (i.e., 6 to 10 mcg/kg) [see ]. Rapid Digitalization with a Loading Dose:PRECAUTIONS
The loading dose should be administered in several portions, with roughly half the total given as the first dose. Additional fractions of this planned total dose may be given at 6 to 8-hour intervals, with careful assessment of clinical response before each additional dose.
If the patient’s clinical response necessitates a change from the calculated loading dose of digoxin, then calculation of the maintenance dose should be based upon the amount actually given.
A single initial dose of 500 to 750 mcg (0.5 to 0.75 mg) of digoxin tablets usually produces a detectable effect in 0.5 to 2 hours that becomes maximal in 2 to 6 hours. Additional doses of 125 to 375 mcg (0.125 to 0.375 mg) may be given cautiously at 6 to 8-hour intervals until clinical evidence of an adequate effect is noted. The usual amount of digoxin tablets that a 70 kg patient requires to achieve 8 to 12 mcg/kg peak body stores is 750 to 1250 mcg (0.75 to 1.25 mg).
Digoxin Injection is frequently used to achieve rapid digitalization, with conversion to digoxin tablets or digoxin solution in capsules for maintenance therapy. If patients are switched from intravenous to oral digoxin formulations, allowances must be made for differences in bioavailability when calculating maintenance dosages (see Table 1, ). CLINICAL PHARMACOLOGY
The doses of digoxin used in controlled trials in patients with heart failure have ranged from 125 to 500 mcg (0.125 to 0.5 mg) once daily. In these studies, the digoxin dose has been generally titrated according to the patient’s age, lean body weight, and renal function. Therapy is generally initiated at a dose of 250 mcg (0.25 mg) once daily in patients under age 70 with good renal function, at a dose of 125 mcg (0.125 mg) once daily in patients over age 70 or with impaired renal function, and at a dose of 62.5 mcg (0.0625 mg) in patients with marked renal impairment. Doses may be increased every 2 weeks according to clinical response. Maintenance Dosing:
In a subset of approximately 1800 patients enrolled in the DIG trial (wherein dosing was based on an algorithm similar to that in Table 5) the mean (± SD) serum digoxin concentrations at 1 month and 12 months were 1.01 ± 0.47 ng/mL and 0.97 ± 0.43 ng/mL, respectively.
The maintenance dose should be based upon the percentage of the peak body stores lost each day through elimination. The following formula has had wide clinical use:
Maintenance Dose = Peak Body Stores (i.e., Loading Dose) x % Daily Loss/100 Where: % Daily Loss = 14 + Ccr/5
(Ccr is creatinine clearance, corrected to 70 kg body weight or 1.73 m body surface area.) 2
Table 5 provides average daily maintenance dose requirements of digoxin tablets for patients with heart failure based upon lean body weight and renal function:
Table 5: Usual Daily Maintenance Dose Requirements (mcg) of Digoxin for Estimated Peak Body Stores of 10 mcg/kg *Ccr is creatinine clearance, corrected to 70 kg body weight or 1.73 m body surface area. , if only serum creatinine concentrations (Scr) are available, a Ccr (corrected to 70 kg body weight) may be estimated in men as (140 - Age)/Scr. For women, this result should be multiplied by 0.85. This equation cannot be used for estimating creatinine clearance in infants or children. 2For adultsNote:
†If no loading dose administered.
‡ 62.5 mcg = 0.0625 mg Lean Body WeightCorrected Ccr (mL/min per 70 kg) *
kg 50 lb 110 60 132 70 154 80 176 90 198 100 220 Number of Days Before Steady State Achieved † 0 62.5 ‡ 125 125 125 187.5 187.5 22 10 125 125 125 187.5 187.5 187.5 19 20 125 125 187.5 187.5 187.5 250 16 30 125 187.5 187.5 187.5 250 250 14 40 125 187.5 187.5 250 250 250 13 50 187.5 187.5 250 250 250 250 12 60 187.5 187.5 250 250 250 375 11 70 187.5 250 250 250 250 375 10 80 187.5 250 250 250 375 375 9 90 187.5 250 250 250 375 500 8 100 250 250 250 375 375 500 7Based on Table 5, a patient in heart failure with an estimated lean body weight of 70 kg and a Ccr of 60 mL/min should be given a dose of 250 mcg (0.25 mg) daily of digoxin tablets, usually taken after the morning meal. If no loading dose is administered, steady-state serum concentrations in this patient should be anticipated at approximately 11 days. Example:
In general, divided daily dosing is recommended for infants and young children (under age 10). In the newborn period, renal clearance of digoxin is diminished and suitable dosage adjustments must be observed. This is especially pronounced in the premature infant. Beyond the immediate newborn period, children generally require proportionally larger doses than adults on the basis of body weight or body surface area. Children over 10 years of age require adult dosages in proportion to their body weight. Some researchers have suggested that infants and young children tolerate slightly higher serum concentrations than do adults. Infants and Children:
Daily maintenance doses for each age group are given in Table 6 and should provide therapeutic effects with minimum risk of toxicity in most patients with heart failure and normal sinus rhythm. These recommendations assume the presence of normal renal function:
Table 6: Daily Maintenance Doses in Children with Normal Renal Function Age Daily Maintenance Dose (mcg/kg) 2 to 5 Years 10 to 15 5 to 10 Years 7 to 10 Over 10 Years 3 to 5In children with renal disease, digoxin must be carefully titrated based upon clinical response.
It cannot be overemphasized that both adult and pediatric dosage guidelines provided are based upon average patient response and substantial individual variation can be expected. Accordingly, ultimate dosage selection must be based upon clinical assessment of the patient.
Peak digoxin body stores larger than the 8 to 12 mcg/kg required for most patients with heart failure and normal sinus rhythm have been used for control of ventricular rate in patients with atrial fibrillation. Doses of digoxin used for the treatment of chronic atrial fibrillation should be titrated to the minimum dose that achieves the desired ventricular rate control without causing undesirable side effects. Data are not available to establish the appropriate resting or exercise target rates that should be achieved. Atrial Fibrillation:
The difference in bio-availability between Digoxin Injection or Digoxin Solution in Capsules and Digoxin Elixir Pediatric or Digoxin Tablets must be considered when changing patients from one dosage form to another. Doses of 100 mcg (0.1 mg) and 200 mcg (0.2 mg) of Digoxin Solution in Capsules are approximately equivalent to 125 mcg (0.125 mg) and 250 mcg (0.25 mg) doses of Digoxin Tablets and Elixir Pediatric, respectively (see Table 1 in ). Dosage Adjustment When Changing Preparations: CLINICAL PHARMACOLOGY: Pharmacokinetics
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Alprazolam
Dosage should be individualized for maximum beneficial effect. While the usual daily dosages given below will meet the needs of most patients, there will be some who require doses greater than 4 mg/day. In such cases, dosage should be increased cautiously to avoid adverse effects. Treatment for patients with anxiety should be initiated with a dose of 0.25 to 0.5 mg given three times daily. The dose may be increased to achieve a maximum therapeutic effect, at intervals of 3 to 4 days, to a maximum daily dose of 4 mg, given in divided doses. The lowest possible effective dose should be employed and the need for continued treatment reassessed frequently. The risk of dependence may increase with dose and duration of treatment. In all patients, dosage should be reduced gradually when discontinuing therapy or when decreasing the daily dosage. Although there are no systematically collected data to support a specific discontinuation schedule, it is suggested that the daily dosage be decreased by no more than 0.5 mg every 3 days. Some patients may require an even slower dosage reduction. The successful treatment of many panic disorder patients has required the use of alprazolam tablets at doses greater than 4 mg daily. In controlled trials conducted to establish the efficacy of alprazolam tablets in panic disorder, doses in the range of 1 to 10 mg daily were used. The mean dosage employed was approximately 5 to 6 mg daily. Among the approximately 1700 patients participating in the panic disorder development program, about 300 received alprazolam tablets in dosages of greater than 7 mg/day, including approximately 100 patients who received maximum dosages of greater than 9 mg/day. Occasional patients required as much as 10 mg a day to achieve a successful response. Treatment may be initiated with a dose of 0.5 mg three times daily. Depending on the response, the dose may be increased at intervals of 3 to 4 days in increments of no more than 1 mg per day. Slower titration to the dose levels greater than 4 mg/day may be advisable to allow full expression of the pharmacodynamic effect of alprazolam tablets. To lessen the possibility of interdose symptoms, the times of administration should be distributed as evenly as possible throughout the waking hours, that is, on a three or four times per day schedule. Generally, therapy should be initiated at a low dose to minimize the risk of adverse responses in patients especially sensitive to the drug. Dose should be advanced until an acceptable therapeutic response (ie, a substantial reduction in or total elimination of panic attacks) is achieved, intolerance occurs, or the maximum recommended dose is attained. For patients receiving doses greater than 4 mg/day, periodic reassessment and consideration of dosage reduction is advised. In a controlled postmarketing dose-response study, patients treated with doses of alprazolam tablets greater than 4 mg/day for 3 months were able to taper to 50% of their total maintenance dose without apparent loss of clinical benefit. Because of the danger of withdrawal, abrupt discontinuation of treatment should be avoided. (See WARNINGS, PRECAUTIONS, DRUG ABUSE AND DEPENDENCE.) The necessary duration of treatment for panic disorder patients responding to alprazolam tablets is unknown. After a period of extended freedom from attacks, a carefully supervised tapered discontinuation may be attempted, but there is evidence that this may often be difficult to accomplish without recurrence of symptoms and/or the manifestation of withdrawal phenomena. Because of the danger of withdrawal, abrupt discontinuation of treatment should be avoided (see WARNINGS, PRECAUTIONS, DRUG ABUSE AND DEPENDENCE). In all patients, dosage should be reduced gradually when discontinuing therapy or when decreasing the daily dosage. Although there are no systematically collected data to support a specific discontinuation schedule, it is suggested that the daily dosage be decreased by no more than 0.5 mg every three days. Some patients may require an even slower dosage reduction. In any case, reduction of dose must be undertaken under close supervision and must be gradual. If significant withdrawal symptoms develop, the previous dosing schedule should be reinstituted and, only after stabilization, should a less rapid schedule of discontinuation be attempted. In a controlled postmarketing discontinuation study of panic disorder patients which compared this recommended taper schedule with a slower taper schedule, no difference was observed between the groups in the proportion of patients who tapered to zero dose; however, the slower schedule was associated with a reduction in symptoms associated with a withdrawal syndrome. It is suggested that the dose be reduced by no more than 0.5 mg every 3 days, with the understanding that some patients may benefit from an even more gradual discontinuation. Some patients may prove resistant to all discontinuation regimens. In elderly patients, in patients with advanced liver disease or in patients with debilitating disease, the usual starting dose is 0.25 mg, given two or three times daily. This may be gradually increased if needed and tolerated. The elderly may be especially sensitive to the effects of benzodiazepines. If side effects occur at the recommended starting dose, the dose may be lowered. Anxiety Disorders and Transient Symptoms of Anxiety: Panic Disorder: Dose Titration: Dose Maintenance: Dose Reduction: Dosing in Special Populations:
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Dehorning
Omeprazole delayed-release capsules should be taken before eating. In the clinical trials, antacids were used concomitantly with omeprazole.
Patients should be informed that the omeprazole delayed-release capsule should be swallowed whole.
For patients unable to swallow an intact capsule, alternative administration options are available [See ]. Dosage and Administration (2.8)
2.1 Short-Term Treatment of Active Duodenal Ulcer
The recommended adult oral dose of omeprazole delayed-release capsules is 20 mg once daily. Most patients heal within four weeks. Some patients may require an additional four weeks of therapy.
2.2 H. pyloriEradication for the Reduction of the Risk of Duodenal Ulcer Recurrence
Triple Therapy (omeprazole/clarithromycin/amoxicillin) — The recommended adult oral regimen is omeprazole delayed-release capsules 20 mg plus clarithromycin 500 mg plus amoxicillin 1000 mg each given twice daily for 10 days. In patients with an ulcer present at the time of initiation of therapy, an additional 18 days of omeprazole delayed-release capsules 20 mg once daily is recommended for ulcer healing and symptom relief.
Dual Therapy (omeprazole/clarithromycin) — The recommended adult oral regimen is omeprazole delayed-release capsuels 40 mg once daily plus clarithromycin 500 mg three times daily for 14 days. In patients with an ulcer present at the time of initiation of therapy, an additional 14 days of omeprazole delayed-release capsules 20 mg once daily is recommended for ulcer healing and symptom relief.
2.3 Gastric Ulcer
The recommended adult oral dose is 40 mg once daily for 4 to 8 weeks.
2.4 Gastroesophageal Reflux Disease (GERD)
The recommended adult oral dose for the treatment of patients with symptomatic GERD and no esophageal lesions is 20 mg daily for up to 4 weeks. The recommended adult oral dose for the treatment of patients with erosive esophagitis and accompanying symptoms due to GERD is 20 mg daily for 4 to 8 weeks.
2.5 Maintenance of Healing of Erosive Esophagitis
The recommended adult oral dose is 20 mg daily. [See ] Clinical Studies (14.4)
2.6 Pathological Hypersecretory Conditions
The dosage of omeprazole delayed-release capsules in patients with pathological hypersecretory conditions varies with the individual patient. The recommended adult oral starting dose is 60 mg once daily. Doses should be adjusted to individual patient needs and should continue for as long as clinically indicated. Doses up to 120 mg three times daily have been administered. Daily dosages of greater than 80 mg should be administered in divided doses. Some patients with Zollinger-Ellison syndrome have been treated continuously with omeprazole delayed-release capsules for more than 5 years.
2.7 Pediatric Patients
For the treatment of GERD and maintenance of healing of erosive esophagitis, the recommended daily dose for pediatric patients 2 to 16 years of age is as follows:
Patient Weight Omeprazole Daily Dose 10 < 20 kg 10 mg ≥ 20 kg 20 mgOn a per kg basis, the doses of omeprazole required to heal erosive esophagitis in pediatric patients are greater than those for adults.
Alternative administrative options can be used for pediatric patients unable to swallow an intact capsule [See ]. Dosage and Administration (2.8)
2.8 Alternative Administration Options
Omeprazole is available as a delayed-release capsule.
For patients who have difficulty swallowing capsules, the contents of an omeprazole delayed-release capsule can be added to applesauce. One tablespoon of applesauce should be added to an empty bowl and the capsule should be opened. All of the pellets inside the capsule should be carefully emptied on the applesauce. The pellets should be mixed with the applesauce and then swallowed immediately with a glass of cool water to ensure complete swallowing of the pellets. The applesauce used should not be hot and should be soft enough to be swallowed without chewing. The pellets should not be chewed or crushed. The pellets/applesauce mixture should not be stored for future use.
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Lisinopril
Hypertension
Initial Therapy
In patients with uncomplicated essential hypertension not on diuretic therapy, the recommended initial dose is 10 mg once a day. Dosage should be adjusted according to blood pressure response. The usual dosage range is 20 mg to 40 mg per day administered in a single daily dose. The antihypertensive effect may diminish toward the end of the dosing interval regardless of the administered dose, but most commonly with a dose of 10 mg daily. This can be evaluated by measuring blood pressure just prior to dosing to determine whether satisfactory control is being maintained for 24 hours. If it is not, an increase in dose should be considered. Doses up to 80 mg have been used but do not appear to give greater effect. If blood pressure is not controlled with lisinopril tablets alone, a low dose of a diuretic may be added. Hydrochlorothiazide, 12.5 mg has been shown to provide an additive effect. After the addition of a diuretic, it may be possible to reduce the dose of lisinopril tablets.
Diuretic Treated Patients
In hypertensive patients who are currently being treated with a diuretic, symptomatic hypotension may occur occasionally following the initial dose of lisinopril tablets. The diuretic should be discontinued, if possible, for two to three days before beginning therapy with lisinopril tablets to reduce the likelihood of hypotension (see ). The dosage of lisinopril tablets should be adjusted according to blood pressure response. If the patient's blood pressure is not controlled with lisinopril tablets alone, diuretic therapy may be resumed as described above. WARNINGS
If the diuretic cannot be discontinued, an initial dose of 5 mg should be used under medical supervision for at least two hours and until blood pressure has stabilized for at least an additional hour (see and , ). WARNINGSPRECAUTIONSDrug Interactions
Concomitant administration of lisinopril tablets with potassium supplements, potassium salt substitutes, or potassium-sparing diuretics may lead to increases of serum potassium (see ). PRECAUTIONS
Dosage Adjustment in Renal Impairment
The usual dose of lisinopril tablets (10 mg) is recommended for patients with creatinine clearance >30 mL/min (serum creatinine of up to approximately 3 mg/dL). For patients with creatinine clearance ≥10 mL/min ≤30 mL/min (serum creatinine ≥3 mg/dL), the first dose is 5 mg once daily. For patients with creatinine clearance <10 mL/min (usually on hemodialysis) the recommended initial dose is 2.5 mg. The dosage may be titrated upward until blood pressure is controlled or to a maximum of 40 mg daily.
* See WARNINGS, Anaphylactoid Reactions During Membrane Exposure . † Dosage or dosing interval should be adjusted depending on the blood pressure response.Renal Status
Creatinine
Clearance
mL/min
Initial
Dose
mg/day
Normal Renal Function
to Mild Impairment
>30
10
Moderate to Severe
Impairment
≥10 ≤30
5
Dialysis Patients *
<10
2.5 †
Heart Failure
Lisinopril tablets are indicated as adjunctive therapy with diuretics and (usually) digitalis. The recommended starting dose is 5 mg once a day. When initiating treatment with lisinopril in patients with heart failure, the initial dose should be administered under medical observation, especially in those patients with low blood pressure (systolic blood pressure below 100 mmHg). The mean peak blood pressure lowering occurs six to eight hours after dosing. Observation should continue until blood pressure is stable. The concomitant diuretic dose should be reduced, if possible, to help minimize hypovolemia which may contribute to hypotension (see and , ). The appearance of hypotension after the initial dose of lisinopril tablets does not preclude subsequent careful dose titration with the drug, following effective management of the hypotension. WARNINGSPRECAUTIONSDrug Interactions
The usual effective dosage range is 5 mg to 40 mg per day administered as a single daily dose. The dose of lisinopril tablets can be increased by increments of no greater than 10 mg, at intervals of no less than 2 weeks to the highest tolerated dose, up to a maximum of 40 mg daily. Dose adjustment should be based on the clinical response of individual patients.
Dosage Adjustment in Patients with Heart Failure and Renal Impairment or Hyponatremia
In patients with heart failure who have hyponatremia (serum sodium <130 mEq/L) or moderate to severe renal impairment (creatinine clearance ≤30 mL/min or serum creatinine >3 mg/dL), therapy with lisinopril tablets should be initiated at a dose of 2.5 mg once a day under close medical supervision (see and , ). WARNINGSPRECAUTIONSDrug Interactions
Acute Myocardial Infarction
In hemodynamically stable patients within 24 hours of the onset of symptoms of acute myocardial infarction, the first dose of lisinopril tablets is 5 mg given orally, followed by 5 mg after 24 hours, 10 mg after 48 hours and then 10 mg of lisinopril tablets once daily. Dosing should continue for six weeks. Patients should receive, as appropriate, the standard recommended treatments such as thrombolytics, aspirin, and beta-blockers.
Patients with a low systolic blood pressure (≤120 mmHg) when treatment is started or during the first 3 days after the infarct should be given a lower 2.5 mg oral dose of lisinopril tablets (see ). If hypotension occurs (systolic blood pressure ≤100 mmHg) a daily maintenance dose of 5 mg may be given with temporary reductions to 2.5 mg if needed. If prolonged hypotension occurs (systolic blood pressure <90 mmHg for more than 1 hour) lisinopril tablets should be withdrawn. For patients who develop symptoms of heart failure, see , . WARNINGSDOSAGE AND ADMINISTRATIONHeart Failure
Dosage Adjustment in Patients with Myocardial Infarction with Renal Impairment
In acute myocardial infarction, treatment with lisinopril tablets should be initiated with caution in patients with evidence of renal dysfunction, defined as serum creatinine concentration exceeding 2 mg/dL. No evaluation of dosing adjustments in myocardial infarction patients with severe renal impairment has been performed.
Use in Elderly
In general, the clinical response was similar in younger and older patients given similar doses of lisinopril tablets. Pharmacokinetic studies, however indicate that maximum blood levels and area under the plasma concentration time curve (AUC) are doubled in older patients, so that dosage adjustments should be made with particular caution.
Pediatric Hypertensive Patients ≥ 6 Years of Age
The usual recommended starting dose is 0.07 mg/kg once daily (up to 5 mg total). Dosage should be adjusted according to blood pressure response. Doses above 0.61 mg/kg (or in excess of 40 mg) have not been studied in pediatric patients (see and ). CLINICAL PHARMACOLOGY, Pharmacokinetics and MetabolismPharmacodynamics and Clinical Effects
Lisinopril tablets are not recommended in pediatric patients < 6 years or in pediatric patients with glomerular filtration rate <30 mL/min/1.73 m (see , and and PRECAUTIONS). 2CLINICALPHARMACOLOGYPharmacokinetics and MetabolismPharmacodynamics and Clinical EffectsPRECAUTIONS
Preparation of Suspension (for 200 mL of a 1.0 mg/mL suspension)
Add 10 mL of Purified Water USP to a polyethylene terephthalate (PET) bottle containing ten 20 mg tablets of lisinopril and shake for at least one minute. Add 30 mL of Bicitra diluent and 160 mL of Ora-Sweet SF™ to the concentrate in the PET bottle and gently shake for several seconds to disperse the ingredients. The suspension should be stored at or below 25°C (77°F) and can be stored for up to four weeks. Shake the suspension before each use. ®34
Registered trademark of Alza Corporation 3
Trademark of Paddock Laboratories, Inc. 4
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Sunmark Nicotine
• if you are under 18 years of age, ask a doctor before use • before using this product, read the enclosed User’s Guide for complete directions and other important information • stop smoking completely when you begin using the gum • if you smoke your first cigarette within 30 minutes of waking up, use Nicotine Polacrilex Gum, 4 mg • if you smoke your first cigarette more than 30 minutes after waking up, use Nicotine Polacrilex Gum, 2 mg according to the following 12 week schedule:
Weeks 1 to 6
Weeks 7 to 9
Weeks 10 to 12
1 piece every 1 to 2 hours
1 piece every 2 to 4 hours
1 piece every 4 to 8 hours
• nicotine gum is a medicine and must be used a certain way to get the best results • chew the gum slowly until it tingles. Then park it between your cheek and gum. When the tingle is gone, begin chewing again, until the tingle returns. • repeat this process until most of the tingle is gone (about 30 minutes) • do not eat or drink for 15 minutes before chewing the nicotine gum, or while chewing a piece • to improve your chances of quitting, use at least 9 pieces per day for the first 6 weeks • if you experience strong or frequent cravings, you may use a second piece within the hour. However, do not continuously use one piece after another since this may cause you hiccups, heartburn, nausea or other side effects. • do not use more than 24 pieces a day • it is important to complete treatment. Stop using the nicotine gum at the end of 12 weeks. If you still feel the need to use nicotine gum, talk to your doctor. -
Divalproex Sodium
Divalproex sodium extended-release tablets are an extended-release product intended for once-a-day oral administration. Divalproex sodium extended-release tablets should be swallowed whole and should not be crushed or chewed.
2.1 Mania
Divalproex sodium extended-release tablets are administered orally. The recommended initial dose is 25 mg/kg/day given once daily. The dose should be increased as rapidly as possible to achieve the lowest therapeutic dose which produces the desired clinical effect or the desired range of plasma concentrations. In a placebo-controlled clinical trial of acute mania or mixed type, patients were dosed to a clinical response with a trough plasma concentration between 85 and 125 mcg/mL. The maximum recommended dosage is 60 mg/kg/day. There is no body of evidence available from controlled trials to guide a clinician in the longer term management of a patient who improves during divalproex sodium extended-release tablets treatment of an acute manic episode. While it is generally agreed that pharmacological treatment beyond an acute response in mania is desirable, both for maintenance of the initial response and for prevention of new manic episodes, there are no data to support the benefits of divalproex sodium extended-release tablets in such longer-term treatment (i.e., beyond 3 weeks).
2.2 Epilepsy
Divalproex sodium extended-release tablets are administered orally, and must be swallowed whole. As divalproex sodium extended-release tablets dosage is titrated upward, concentrations of clonazepam, diazepam, ethosuximide, lamotrigine, tolbutamide, phenobarbital, carbamazepine, and/or phenytoin may be affected . For adults and children 10 years of age or older. Divalproex sodium extended-release tablets have not been systematically studied as initial therapy. Patients should initiate therapy at 10 to 15 mg/kg/day. The dosage should be increased by 5 to 10 mg/kg/week to achieve optimal clinical response. Ordinarily, optimal clinical response is achieved at daily doses below 60 mg/kg/day. If satisfactory clinical response has not been achieved, plasma levels should be measured to determine whether or not they are in the usually accepted therapeutic range (50 to 100 mcg/mL). No recommendation regarding the safety of valproate for use at doses above 60 mg/kg/day can be made. The probability of thrombocytopenia increases significantly at total trough valproate plasma concentrations above 110 mcg/mL in females and 135 mcg/mL in males. The benefit of improved seizure control with higher doses should be weighed against the possibility of a greater incidence of adverse reactions. Patients should initiate therapy at 10 to 15 mg/kg/day. The dosage should be increased by 5 to 10 mg/kg/week to achieve optimal clinical response. Ordinarily, optimal clinical response is achieved at daily doses below 60 mg/kg/day. If satisfactory clinical response has not been achieved, plasma levels should be measured to determine whether or not they are in the usually accepted therapeutic range (50 to 100 mcg/mL). No recommendation regarding the safety of valproate for use at doses above 60 mg/kg/day can be made. Concomitant antiepilepsy drug (AED) dosage can ordinarily be reduced by approximately 25% every 2 weeks. This reduction may be started at initiation of divalproex sodium extended-release tablets therapy, or delayed by 1 to 2 weeks if there is a concern that seizures are likely to occur with a reduction. The speed and duration of withdrawal of the concomitant AED can be highly variable, and patients should be monitored closely during this period for increased seizure frequency. Divalproex sodium extended-release tablets may be added to the patient's regimen at a dosage of 10 to 15 mg/kg/day. The dosage may be increased by 5 to 10 mg/kg/week to achieve optimal clinical response. Ordinarily, optimal clinical response is achieved at daily doses below 60 mg/kg/day. If satisfactory clinical response has not been achieved, plasma levels should be measured to determine whether or not they are in the usually accepted therapeutic range (50 to 100 mcg/mL). No recommendation regarding the safety of valproate for use at doses above 60 mg/kg/day can be made. In a study of adjunctive therapy for complex partial seizures in which patients were receiving either carbamazepine or phenytoin in addition to valproate, no adjustment of carbamazepine or phenytoin dosage was needed . However, since valproate may interact with these or other concurrently administered AEDs as well as other drugs, periodic plasma concentration determinations of concomitant AEDs are recommended during the early course of therapy . The recommended initial dose is 15 mg/kg/day, increasing at one week intervals by 5 to 10 mg/kg/day until seizures are controlled or side effects preclude further increases. The maximum recommended dosage is 60 mg/kg/day. A good correlation has not been established between daily dose, serum concentrations, and therapeutic effect. However, therapeutic valproate serum concentration for most patients with absence seizures is considered to range from 50 to 100 mcg/mL. Some patients may be controlled with lower or higher serum concentrations . As divalproex sodium extended-release tablets dosage is titrated upward, blood concentrations of phenobarbital and/or phenytoin may be affected . Antiepilepsy drugs should not be abruptly discontinued in patients in whom the drug is administered to prevent major seizures because of the strong possibility of precipitating status epilepticus with attendant hypoxia and threat to life. [see ] Drug Interactions (7.2)Complex Partial Seizures Monotherapy (Initial Therapy) Conversion to Monotherapy Adjunctive Therapy [see ] Clinical Studies (14.2)[see ] Drug Interactions (7) Simple and Complex Absence Seizures [see ] Clinical Pharmacology (12.3) [see ] Drug Interactions (7.2)
2.3 Migraine
Divalproex sodium extended-release tablets are indicated for prophylaxis of migraine headaches in adults. The recommended starting dose is 500 mg once daily for 1 week, thereafter increasing to 1000 mg once daily. Although doses other than 1000 mg once daily of divalproex sodium extended-release tablets have not been evaluated in patients with migraine, the effective dose range of divalproex sodium delayed-release tablets in these patients is 500 to 1000 mg/day. As with other valproate products, doses of divalproex sodium extended-release tablets should be individualized and dose adjustment may be necessary. If a patient requires smaller dose adjustments than that available with divalproex sodium extended-release tablets, divalproex sodium delayed-release tablets should be used instead.
2.4 Conversion from Divalproex Sodium Delayed-Release Tablets to Divalproex Sodium Extended-Release Tablets
In adult patients and pediatric patients 10 years of age or older with epilepsy previously receiving divalproex sodium delayed-release tablets, divalproex sodium extended-release tablets should be administered once-daily using a dose 8 to 20% higher than the total daily dose of divalproex sodium delayed-release tablets (Table 1). For patients whose divalproex sodium delayed-release tablets total daily dose cannot be directly converted to divalproex sodium extended-release tablets, consideration may be given at the clinician’s discretion to increase the patient’s divalproex sodium delayed-release tablets total daily dose to the next higher dosage before converting to the appropriate total daily dose of divalproex sodium extended-release tablets.
Table 1. Dose Conversion * These total daily doses of divalproex sodium delayed-release tablets cannot be directly converted to an 8 to 20% higher total daily dose of divalproex sodium extended-release tablets because the required dosing strengths of divalproex sodium extended-release tablets are not available. Consideration may be given at the clinician's discretion to increase the patient’s divalproex sodium delayed-release tablets total daily dose to the next higher dosage before converting to the appropriate total daily dose of divalproex sodium extended-release tablets. Divalproex Sodium Delayed-Release Tablets Divalproex Sodium Extended-Release Tablets Total Daily Dose (mg) (mg) 500*-625 750 750*-875 1000 1000*-1125 1250 1250-1375 1500 1500-1625 1750 1750 2000 1875-2000 2250 2125-2250 2500 2375 2750 2500-2750 3000 2875 3250 3000-3125 3500There is insufficient data to allow a conversion factor recommendation for patients with divalproex sodium delayed-release tablets doses above 3125 mg/day. Plasma valproate C concentrations for divalproex sodium extended-release tablets on average are equivalent to divalproex sodium delayed-release tablets, but may vary across patients after conversion. If satisfactory clinical response has not been achieved, plasma levels should be measured to determine whether or not they are in the usually accepted therapeutic range (50 to 100 mcg/mL) . min[see ] Clinical Pharmacology (12.2)
2.5 General Dosing Advice
Due to a decrease in unbound clearance of valproate and possibly a greater sensitivity to somnolence in the elderly, the starting dose should be reduced in these patients. Starting doses in the elderly lower than 250 mg can only be achieved by the use of divalproex sodium delayed-release tablets. Dosage should be increased more slowly and with regular monitoring for fluid and nutritional intake, dehydration, somnolence, and other adverse reactions. Dose reductions or discontinuation of valproate should be considered in patients with decreased food or fluid intake and in patients with excessive somnolence. The ultimate therapeutic dose should be achieved on the basis of both tolerability and clinical response . The frequency of adverse effects (particularly elevated liver enzymes and thrombocytopenia) may be dose-related. The probability of thrombocytopenia appears to increase significantly at total valproate concentrations of ≥ 110 mcg/mL (females) or ≥ 135 mcg/mL (males) . The benefit of improved therapeutic effect with higher doses should be weighed against the possibility of a greater incidence of adverse reactions. Patients who experience G.I. irritation may benefit from administration of the drug with food or by slowly building up the dose from an initial low level. Patients should be informed to take divalproex sodium extended-release tablets every day as prescribed. If a dose is missed it should be taken as soon as possible, unless it is almost time for the next dose. If a dose is skipped, the patient should not double the next dose. Dosing in Elderly Patients [see , Warnings and Precautions (5.14) and ] Use in Specific Populations (8.5)Clinical Pharmacology (12.3) Dose-Related Adverse Reactions [see ] Warnings and Precautions (5.8) G.I. Irritation Compliance
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Nicotine Patch
If you are under 18 years of age, ask a doctor before use Before using this product, read the enclosed self-help guide for complete directions and other information Stop smoking completely when you begin using the patch If you smoke more than 10 cigarettes per day, use the following schedule: Weeks 1 thru 4 Weeks 5 and 6 Weeks 7 and 8 STEP 1 STEP 2 STEP 3 use one 21 mg patch/day use one 14 mg patch/day use one 7 mg patch/day If you smoke 10 or start with for 6 weeks, then for 2 weeks and then stop less cigarettes per day,Step 2Step 3 Apply one new patch every 24 hours on skin that is dry, clean, and hairless Remove backing from patch and immediately press onto skin. Hold for 10 seconds. Wash hands after applying or removing patch. Save pouch to use for patch disposal. Dispose of used patch by folding sticky ends together and putting in pouch. The used patch should be removed and a new one applied to a different skin site at the same time each day If you have vivid dreams, you may remove the patch at bedtime and apply a new one in the morning Do not wear more than one patch at a time Do not cut patch in half or into smaller pieces Do not leave patch on for more than 24 hours because it may irritate your skin and loses strength after 24 hours Stop using the patch at the end of 8 weeks. If you still feel the need to use the patch talk to your doctor.
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Amoxicillin
2.1 Dosing for Adult and Pediatric Patients > 3 Months of Age
Except for gonorrhea, treatment should be continued for a minimum of 48 to 72 hours beyond the time that the patient becomes asymptomatic or evidence of bacterial eradication has been obtained. It is recommended that there be at least 10 days’ treatment for any infection caused by to prevent the occurrence of acute rheumatic fever. In some infections, therapy may be required for several weeks. It may be necessary to continue clinical and/or bacteriological follow-up for several months after cessation of therapy. Streptococcus pyogenes
Table 1. Dosing Recommendations for Adult and Pediatric Patients > 3 Months of Age Infection Severity a Usual Adult Dose Usual Dose for Children > 3 Months b Dosing for infections caused by bacteria that are intermediate in their susceptibility to amoxicillin should follow the recommendations for severe infections. The children’s dosage is intended for individuals whose weight is less than 40 kg. Children weighing 40 kg or more should be dosed according to the adult recommendations. a b Ear/Nose/Throat Skin/Skin Structure Genitourinary Tract Mild/Moderate 500 mg every 12 hours or 250 mg every 8 hours 25 mg/kg/day in divided doses every 12 hours 20 mg/kg/day in divided doses every 8 hours or Severe 875 mg every 12 hours or 500 mg every 8 hours 45 mg/kg/day in divided doses every 12 hours 40 mg/kg/day in divided doses every 8 hours or Lower Respiratory Tract Mild/Moderate or Severe 875 mg every 12 hours or 500 mg every 8 hours 45 mg/kg/day in divided doses every 12 hours 40 mg/kg/day in divided doses every 8 hours or Gonorrhea Acute, uncomplicated ano -genital and urethral infections in males and females 3 grams as single oral dose children: 50 mg/kg amoxicillin, combined with 25 mg/kg probenecid as a single dose. Prepubertal Note: Since probenecid is contraindicated in children under 2 years, do not use this regimen in children under 2 years of age.2.2 Dosing in Neonates and Infants Aged ≤ 12 Weeks ( ≤ 3 Months)
Treatment should be continued for a minimum of 48 to 72 hours beyond the time that the patient becomes asymptomatic or evidence of bacterial eradication has been obtained. It is recommended that there be at least 10 days’ treatment for any infection caused by to prevent the occurrence of acute rheumatic fever. Due to incompletely developed renal function affecting elimination of amoxicillin in this age group, the recommended upper dose of amoxicillin capsules is 30 mg/kg/day divided every 12 hours. There are currently no dosing recommendations for pediatric patients with impaired renal function. Streptococcus pyogenes
2.3 Dosing for H. pylori Infection
The recommended adult oral dose is 1 gram amoxicillin, 500 mg clarithromycin, and 30 mg lansoprazole, all given twice daily (every 12 hours) for 14 days. The recommended adult oral dose is 1 gram amoxicillin and 30 mg lansoprazole, each given three times daily (every 8 hours) for 14 days. Please refer to clarithromycin and lansoprazole full prescribing information. Triple Therapy: Dual Therapy:
2.4 Dosing in Renal Impairment
Patients with impaired renal function do not generally require a reduction in dose unless the impairment is severe. Severely impaired patients with a glomerular filtration rate of < 30 mL/min should not receive a 875 mg dose. Patients with a glomerular filtration rate of 10 to 30 mL/min should receive 500 mg or 250 mg every 12 hours, depending on the severity of the infection. Patients with a glomerular filtration rate less than 10 mL/min should receive 500 mg or 250 mg every 24 hours, depending on severity of the infection. Hemodialysis patients should receive 500 mg or 250 mg every 24 hours, depending on severity of the infection. They should receive an additional dose both during and at the end of dialysis. -
Cephalexin
Cephalexin capsules are administered orally.
— The adult dosage ranges from 1 to 4 g daily in divided doses. The 333 mg and the 750 mg strengths should be administered such that the daily dose is within 1 to 4 grams per day. The usual adult dose is 250 mg every 6 hours. For the following infections, a dosage of 500 mg may be administered every 12 hours: streptococcal pharyngitis, skin and skin structure infections, and uncomplicated cystitis in patients over 15 years of age. Cystitis therapy should be continued for 7 to 14 days. For more severe infections or those caused by less susceptible organisms, larger doses may be needed. If daily doses of cephalexin greater than 4 g are required, parenteral cephalosporins, in appropriate doses, should be considered. Adults
— The usual recommended daily dosage for pediatric patients is 25 to 50 mg/kg in divided doses. For streptococcal pharyngitis in patients over 1 year of age and for skin and skin structure infections, the total daily dose may be divided and administered every 12 hours. Pediatric Patients
In severe infections, the dosage may be doubled.
In the therapy of otitis media, clinical studies have shown that a dosage of 75 to 100 mg/kg/day in 4 divided doses is required.
In the treatment of β-hemolytic streptococcal infections, a therapeutic dosage of cephalexin should be administered for at least 10 days.
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Duloxetine
Duloxetine delayed-release capsules should be swallowed whole and should not be chewed or crushed, nor should the capsule be opened and its contents sprinkled on food or mixed with liquids. All of these might affect the enteric coating. Duloxetine delayed-release capsules can be given without regard to meals.
2.1 Initial Treatment
— Duloxetine delayed-release capsules should be administered at a total dose of 40 mg/day (given as 20 mg twice daily) to 60 mg/day (given either once daily or as 30 mg twice daily). For some patients, it may be desirable to start at 30 mg once daily for 1 week, to allow patients to adjust to the medication before increasing to 60 mg once daily. While a 120 mg/day dose was shown to be effective, there is no evidence that doses greater than 60 mg/day confer any additional benefits. The safety of doses above 120 mg/day has not been adequately evaluated [ ]. Major Depressive Disordersee Clinical Studies ( ) 14.1
— For most patients, the recommended starting dose for duloxetine delayed-release capsules is 60 mg administered once daily. For some patients, it may be desirable to start at 30 mg once daily for 1 week, to allow patients to adjust to the medication before increasing to 60 mg once daily. While a 120 mg once daily dose was shown to be effective, there is no evidence that doses greater than 60 mg/day confer additional benefit. Nevertheless, if a decision is made to increase the dose beyond 60 mg once daily, dose increases should be in increments of 30 mg once daily. The safety of doses above 120 mg once daily has not been adequately evaluated [ ]. Generalized Anxiety Disordersee Clinical Studies ( ) 14.2
— The recommended dose for duloxetine delayed-release capsules is 60 mg administered once daily. There is no evidence that doses higher than 60 mg confer additional significant benefit and the higher dose is clearly less well tolerated [ ]. For patients for whom tolerability is a concern, a lower starting dose may be considered. Diabetic Peripheral Neuropathic Painsee Clinical Studies ( ) 14.3
Since diabetes is frequently complicated by renal disease, a lower starting dose and gradual increase in dose should be considered for patients with renal impairment [ ]. see Dosage and Administration ( ), Use in Specific Populations ( ), and Clinical Pharmacology ( ) 2.38.1012.3
— The recommended dose for duloxetine delayed-release capsules is 60 mg once daily. Dosing may be started at 30 mg for one week, to allow patients to adjust to the medication before increasing to 60 mg once daily. There is no evidence that higher doses confer additional benefit, even in patients who do not respond to a 60 mg dose, and higher doses are associated with a higher rate of adverse reactions . Chronic Musculoskeletal Pain[see Clinical Studies ( )] 14.5
2.2 Maintenance/Continuation/Extended Treatment
— It is generally agreed that acute episodes of major depression require several months or longer of sustained pharmacologic therapy. Maintenance of efficacy in MDD was demonstrated with duloxetine delayed-release capsules as monotherapy. Duloxetine delayed-release capsules should be administered at a total dose of 60 mg once daily. Patients should be periodically reassessed to determine the need for maintenance treatment and the appropriate dose for such treatment [ ]. Major Depressive Disordersee Clinical Studies ( ) 14.1
— It is generally agreed that episodes of generalized anxiety disorder require several months or longer of sustained pharmacological therapy. Maintenance of efficacy in GAD was demonstrated with duloxetine delayed-release capsules as monotherapy. Duloxetine delayed-release capsules should be administered in a dose range of 60 to 120 mg once daily. Patients should be periodically reassessed to determine the continued need for maintenance treatment and the appropriate dose for such treatment [ ]. Generalized Anxiety Disordersee Clinical Studies ( ) 14.2
— As the progression of diabetic peripheral neuropathy is highly variable and management of pain is empirical, the effectiveness of duloxetine delayed-release capsules must be assessed individually. Efficacy beyond 12 weeks has not been systematically studied in placebo-controlled trials. Diabetic Peripheral Neuropathic Pain
— The efficacy of duloxetine delayed-release capsules has not been established in placebo-controlled studies beyond 13 weeks. Chronic Musculoskeletal Pain
2.3 Dosing in Special Populations
— It is recommended that duloxetine delayed-release capsules should ordinarily not be administered to patients with any hepatic insufficiency [ ]. Hepatic Insufficiencysee Warnings and Precautions ( ) and Use in Specific Populations ( ) 5.148.9
— Duloxetine delayed-release capsules are not recommended for patients with end-stage renal disease or severe renal impairment (estimated creatinine clearance < 30 mL/min) [ ]. Severe Renal Impairmentsee Warnings and Precautions ( ) and Use in Specific Populations ( ) 5.148.10
— No dose adjustment is recommended for elderly patients on the basis of age. As with any drug, caution should be exercised in treating the elderly. When individualizing the dosage in elderly patients, extra care should be taken when increasing the dose [ ]. Elderly Patientssee Use in Specific Populations ( ) 8.5
— There are no adequate and well-controlled studies in pregnant women; therefore, duloxetine delayed-release capsules should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus [ ]. Pregnant Womensee Use in Specific Populations ( ) 8.1
— Because the safety of duloxetine in infants is not known, nursing while on duloxetine delayed-release capsules is not recommended [ ]. Nursing Motherssee Use in Specific Populations ( ) 8.3
2.4 Discontinuing Duloxetine Delayed-Release Capsules
Symptoms associated with discontinuation of duloxetine delayed-release capsules and other SSRIs and SNRIs have been reported. A gradual reduction in the dose rather than abrupt cessation is recommended whenever possible [ ]. see Warnings and Precautions ( ) 5.7
2.5 Switching a Patient to or From a Monoamine Oxidase Inhibitor (MAOI) Intended to Treat Psychiatric Disorders
At least 14 days should elapse between discontinuation of an MAOI intended to treat psychiatric disorders and initiation of therapy with duloxetine delayed-release capsules. Conversely, at least 5 days should be allowed after stopping duloxetine delayed-release capsules before starting an MAOI intended to treat psychiatric disorders [ ]. see Contraindications ( ) 4.1
2.6 Use of Duloxetine Delayed-Release Capsules With Other MAOIs Such as Linezolid or Methylene Blue
Do not start duloxetine delayed-release capsules in a patient who is being treated with linezolid or intravenous methylene blue because there is an increased risk of serotonin syndrome. In a patient who requires more urgent treatment of a psychiatric condition, other interventions, including hospitalization, should be considered [ ]. see Contraindications ( ) 4.1
In some cases, a patient already receiving duloxetine delayed-release capsule therapy may require urgent treatment with linezolid or intravenous methylene blue. If acceptable alternatives to linezolid or intravenous methylene blue treatment are not available and the potential benefits of linezolid or intravenous methylene blue treatment are judged to outweigh the risks of serotonin syndrome in a particular patient, duloxetine delayed-release capsules should be stopped promptly, and linezolid or intravenous methylene blue can be administered. The patient should be monitored for symptoms of serotonin syndrome for 5 days or until 24 hours after the last dose of linezolid or intravenous methylene blue, whichever comes first. Therapy with duloxetine delayed-release capsules may be resumed 24 hours after the last dose of linezolid or intravenous methylene blue [ ]. see Warnings and Precautions ( ) 5.4
The risk of administering methylene blue by non-intravenous routes (such as oral tablets or by local injection) or in intravenous doses much lower than 1 mg/kg with duloxetine delayed-release capsules is unclear. The clinician should, nevertheless, be aware of the possibility of emergent symptoms of serotonin syndrome with such use [ ]. see Warnings and Precautions ( ) 5.4
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Ziprasidone Hydrochloride
2.1 Schizophrenia
Dose Selection
Ziprasidone hydrochloride capsules should be administered at an initial daily dose of 20 mg twice daily with food. In some patients, daily dosage may subsequently be adjusted on the basis of individual clinical status up to 80 mg twice daily. Dosage adjustments, if indicated, should generally occur at intervals of not less than 2 days, as steady-state is achieved within 1 to 3 days. In order to ensure use of the lowest effective dose, patients should ordinarily be observed for improvement for several weeks before upward dosage adjustment.
Efficacy in schizophrenia was demonstrated in a dose range of 20 mg to 100 mg twice daily in short-term, placebo-controlled clinical trials. There were trends toward dose response within the range of 20 mg to 80 mg twice daily, but results were not consistent. An increase to a dose greater than 80 mg twice daily is not generally recommended. The safety of doses above 100 mg twice daily has not been systematically evaluated in clinical trials [see ]. Clinical Studies (14.1)
Maintenance Treatment
While there is no body of evidence available to answer the question of how long a patient treated with ziprasidone should remain on it, a maintenance study in patients who had been symptomatically stable and then randomized to continue ziprasidone or switch to placebo demonstrated a delay in time to relapse for patients receiving Ziprasidone hydrochloride. No additional benefit was demonstrated for doses above 20 mg twice daily. Patients should be periodically reassessed to determine the need for maintenance treatment. [see ]. Clinical Studies (14.1)
2.2 2.2
2.3 2.3
2.4 Dosing in Special Populations
Dosage adjustments are generally not required on the basis of age, gender, race, or renal or hepatic impairment. Ziprasidone hydrochloride is not approved for use in children or adolescents. Oral:
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Gabapentin
Gabapentin Capsules, USP are given orally with or without food.
If gabapentin dose is reduced, discontinued or substituted with an alternative medication, this should be done gradually over a minimum of 1 week (a longer period may be needed at the discretion of the prescriber).
Postherpetic Neuralgia
In adults with postherpetic neuralgia, gabapentin therapy may be initiated as a single 300-mg dose on Day 1, 600 mg/day on Day 2 (divided BID), and 900 mg/day on Day 3 (divided TID). The dose can subsequently be titrated up as needed for pain relief to a daily dose of 1800 mg (divided TID). In clinical studies, efficacy was demonstrated over a range of doses from 1800 mg/day to 3600 mg/day with comparable effects across the dose range. Additional benefit of using doses greater than 1800 mg/day was not demonstrated.
Epilepsy
Gabapentin is recommended for add-on therapy in patients 3 years of age and older. Effectiveness in pediatric patients below the age of 3 years has not been established.
The effective dose of gabapentin is 900 to 1800 mg/day and given in divided doses (three times a day) using 300 or 400 mg capsules, or 600 or 800 mg tablets. The starting dose is 300 mg three times a day. If necessary, the dose may be increased using 300 or 400 mg capsules, or 600 or 800 mg tablets three times a day up to 1800 mg/day. Dosages up to 2400 mg/day have been well tolerated in long-term clinical studies. Doses of 3600 mg/day have also been administered to a small number of patients for a relatively short duration, and have been well tolerated. The maximum time between doses in the TID schedule should not exceed 12 hours. Patients >12 years of age:
The starting dose should range from 10-15 mg/kg/day in 3 divided doses, and the effective dose reached by upward titration over a period of approximately 3 days. The effective dose of gabapentin in patients 5 years of age and older is 25–35 mg/kg/day and given in divided doses (three times a day). The effective dose in pediatric patients ages 3 and 4 years is 40 mg/kg/day and given in divided doses (three times a day) (see .) Gabapentin may be administered as the oral solution, capsule, or tablet, or using combinations of these formulations. Dosages up to 50 mg/kg/day have been well-tolerated in a long-term clinical study. The maximum time interval between doses should not exceed 12 hours. Pediatric Patients Age 3–12 years:CLINICAL PHARMACOLOGY, Pediatrics
It is not necessary to monitor gabapentin plasma concentrations to optimize gabapentin therapy. Further, because there are no significant pharmacokinetic interactions among gabapentin and other commonly used antiepileptic drugs, the addition of gabapentin does not alter the plasma levels of these drugs appreciably.
If gabapentin is discontinued and/or an alternate anticonvulsant medication is added to the therapy, this should be done gradually over a minimum of 1 week.
Dosage in Renal Impairment
Creatinine clearance is difficult to measure in outpatients. In patients with stable renal function, creatinine clearance (C ) can be reasonably well estimated using the equation of Cockcroft and Gault: for females C =(0. 85)( 140-age)(weight)/[(72)(S )] for males C =(140-age)(weight)/[(72)(S )] Cr CrCr CrCr
where age is in years, weight is in kilograms and S is serum creatinine in mg/dL. Cr
Dosage adjustment in patients ≥ 12 years of age with compromised renal function or undergoing hemodialysis is recommended as follows (see dosing recommendations above for effective doses in each indication).
TABLE 6. Gabapentin Dosage Based on Renal Function Renal Function Creatinine Clearance (mL/min) Total Daily Dose Range (mg/day) Dose Regimen (mg) For patients with creatinine clearance <15 mL/min, reduce daily dose in proportion to creatinine clearance (e.g., patients with a creatinine clearance of 7.5 mL/min should receive one-half the daily dose that patients with a creatinine clearance of 15 mL/min receive). a Patients on hemodialysis should receive maintenance doses based on estimates of creatinine clearance as indicated in the upper portion of the table and a supplemental post-hemodialysis dose administered after each 4 hours of hemodialysis as indicated in the lower portion of the table. b ≥60 900-3600 300 TID 400 TID 600 TID 800 TID 1200 TID >30-59 400-1400 200 BID 300 BID 400 BID 500 BID 700 BID >15-29 200-700 200 QD 300 QD 400 QD 500 QD 700 QD 15 a 100-300 100 QD 125 QD 150 QD 200 QD 300 QD Post-Hemodialysis Supplemental Dose (mg) b Hemodialysis 125 b 150 b 200 b 250 b 350 bThe use of gabapentin in patients <12 years of age with compromised renal function has not been studied.
Dosage in Elderly
Because elderly patients are more likely to have decreased renal function, care should be taken in dose selection, and dose should be adjusted based on creatinine clearance values in these patients.
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Cephalexin
Cephalexin capsules are administered orally.
— The adult dosage ranges from 1 to 4 g daily in divided doses. The 333 mg and the 750 mg strengths should be administered such that the daily dose is within 1 to 4 grams per day. The usual adult dose is 250 mg every 6 hours. For the following infections, a dosage of 500 mg may be administered every 12 hours: streptococcal pharyngitis, skin and skin structure infections, and uncomplicated cystitis in patients over 15 years of age. Cystitis therapy should be continued for 7 to 14 days. For more severe infections or those caused by less susceptible organisms, larger doses may be needed. If daily doses of cephalexin greater than 4 g are required, parenteral cephalosporins, in appropriate doses, should be considered. Adults
— The usual recommended daily dosage for pediatric patients is 25 to 50 mg/kg in divided doses. For streptococcal pharyngitis in patients over 1 year of age and for skin and skin structure infections, the total daily dose may be divided and administered every 12 hours. Pediatric Patients
In severe infections, the dosage may be doubled.
In the therapy of otitis media, clinical studies have shown that a dosage of 75 to 100 mg/kg/day in 4 divided doses is required.
In the treatment of β-hemolytic streptococcal infections, a therapeutic dosage of cephalexin should be administered for at least 10 days.
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Divalproex Sodium Extended-release
Divalproex sodium extended-release tablets are an extended-release product intended for once-a-day oral administration. Divalproex sodium extended-release tablets should be swallowed whole and should not be crushed or chewed.
2.1 Mania
Divalproex sodium extended-release tablets are administered orally. The recommended initial dose is 25 mg/kg/day given once daily. The dose should be increased as rapidly as possible to achieve the lowest therapeutic dose which produces the desired clinical effect or the desired range of plasma concentrations. In a placebo-controlled clinical trial of acute mania or mixed type, patients were dosed to a clinical response with a trough plasma concentration between 85 and 125 mcg/mL. The maximum recommended dosage is 60 mg/kg/day.
There is no body of evidence available from controlled trials to guide a clinician in the longer term management of a patient who improves during divalproex sodium extended-release tablets treatment of an acute manic episode. While it is generally agreed that pharmacological treatment beyond an acute response in mania is desirable, both for maintenance of the initial response and for prevention of new manic episodes, there are no data to support the benefits of divalproex sodium extended-release tablets in such longer-term treatment (i.e., beyond 3 weeks).
2.2 Epilepsy
Divalproex sodium extended-release tablets are administered orally, and must be swallowed whole. As divalproex sodium extended-release tablets dosage is titrated upward, concentrations of clonazepam, diazepam, ethosuximide, lamotrigine, tolbutamide, phenobarbital, carbamazepine, and/or phenytoin may be affected . [see Drug Interactions ] (7.2)
Complex Partial Seizures
For adults and children 10 years of age or older.
Monotherapy (Initial Therapy)
Divalproex sodium extended-release tablets has not been systematically studied as initial therapy. Patients should initiate therapy at 10 to 15 mg/kg/day. The dosage should be increased by 5 to 10 mg/kg/week to achieve optimal clinical response. Ordinarily, optimal clinical response is achieved at daily doses below 60 mg/kg/day. If satisfactory clinical response has not been achieved, plasma levels should be measured to determine whether or not they are in the usually accepted therapeutic range (50 to 100 mcg/mL). No recommendation regarding the safety of valproate for use at doses above 60 mg/kg/day can be made.
The probability of thrombocytopenia increases significantly at total trough valproate plasma concentrations above 110 mcg/mL in females and 135 mcg/mL in males. The benefit of improved seizure control with higher doses should be weighed against the possibility of a greater incidence of adverse reactions.
Conversion to Monotherapy
Patients should initiate therapy at 10 to 15 mg/kg/day. The dosage should be increased by 5 to 10 mg/kg/week to achieve optimal clinical response. Ordinarily, optimal clinical response is achieved at daily doses below 60 mg/kg/day. If satisfactory clinical response has not been achieved, plasma levels should be measured to determine whether or not they are in the usually accepted therapeutic range (50 - 100 mcg/mL). No recommendation regarding the safety of valproate for use at doses above 60 mg/kg/day can be made.
Concomitant antiepilepsy drug (AED) dosage can ordinarily be reduced by approximately 25% every 2 weeks. This reduction may be started at initiation of divalproex sodium extended-release tablets therapy, or delayed by 1 to 2 weeks if there is a concern that seizures are likely to occur with a reduction. The speed and duration of withdrawal of the concomitant AED can be highly variable, and patients should be monitored closely during this period for increased seizure frequency.
Adjunctive Therapy
Divalproex sodium extended-release tablets may be added to the patient's regimen at a dosage of 10 to 15 mg/kg/day. The dosage may be increased by 5 to 10 mg/kg/week to achieve optimal clinical response. Ordinarily, optimal clinical response is achieved at daily doses below 60 mg/kg/day. If satisfactory clinical response has not been achieved, plasma levels should be measured to determine whether or not they are in the usually accepted therapeutic range (50 to 100 mcg/mL). No recommendation regarding the safety of valproate for use at doses above 60 mg/kg/day can be made.
In a study of adjunctive therapy for complex partial seizures in which patients were receiving either carbamazepine or phenytoin in addition to valproate, no adjustment of carbamazepine or phenytoin dosage was needed . However, since valproate may interact with these or other concurrently administered AEDs as well as other drugs, periodic plasma concentration determinations of concomitant AEDs are recommended during the early course of therapy . [see Clinical Studies ] (14.2)[see Drug Interactions ] (7)
Simple and Complex Absence Seizures
The recommended initial dose is 15 mg/kg/day, increasing at one week intervals by 5 to 10 mg/kg/day until seizures are controlled or side effects preclude further increases. The maximum recommended dosage is 60 mg/kg/day.
A good correlation has not been established between daily dose, serum concentrations, and therapeutic effect. However, therapeutic valproate serum concentration for most patients with absence seizures is considered to range from 50 to 100 mcg/mL. Some patients may be controlled with lower or higher serum concentrations . [see Clinical Pharmacology ] (12.3)
As divalproex sodium extended-release tablets dosage is titrated upward, blood concentrations of phenobarbital and/or phenytoin may be affected . [see Drug Interactions ] (7.2)
Antiepilepsy drugs should not be abruptly discontinued in patients in whom the drug is administered to prevent major seizures because of the strong possibility of precipitating status epilepticus with attendant hypoxia and threat to life.
2.3 Migraine
Divalproex sodium extended-release tablets are indicated for prophylaxis of migraine headaches in adults.
The recommended starting dose is 500 mg once daily for 1 week, thereafter increasing to 1000 mg once daily. Although doses other than 1000 mg once daily of divalproex sodium extended-release tablets have not been evaluated in patients with migraine, the effective dose range of divalproex sodium tablets in these patients is 500-1000 mg/day. As with other valproate products, doses of divalproex sodium extended-release tablets should be individualized and dose adjustment may be necessary. If a patient requires smaller dose adjustments than that available with divalproex sodium extended-release tablets, divalproex sodium tablets should be used instead.
2.4 Conversion from Divalproex Sodium Tablets to Divalproex Sodium Extended-Release Tablets
In adult patients and pediatric patients 10 years of age or older with epilepsy previously receiving divalproex sodium tablets, divalproex sodium extended-release tablets should be administered once-daily using a dose 8 to 20% higher than the total daily dose of divalproex sodium tablets . For patients whose divalproex sodium tablets total daily dose cannot be directly converted to divalproex sodium extended-release tablets, consideration may be given at the clinician’s discretion to increase the patient’s divalproex sodium tablets total daily dose to the next higher dosage before converting to the appropriate total daily dose of divalproex sodium extended-release tablets. (Table 1)
Table 1. Dose Conversion Divalproex Sodium Tablets Divalproex Sodium Extended-Release Tablets Total Daily Dose (mg) (mg) 500* - 625 750 750* - 875 1000 1000*-1125 1250 1250-1375 1500 1500-1625 1750 1750 2000 1875-2000 2250 2125-2250 2500 2375 2750 2500-2750 3000 2875 3250 3000-3125 3500 * These total daily doses of divalproex sodium tablets cannot be directly converted to an 8 to 20% higher total daily dose of divalproex sodium extended-release tablets because the required dosing strengths of divalproex sodium extended-release tablets are not available. Consideration may be given at the clinician's discretion to increase the patient's divalproex sodium tablets total daily dose to the next higher dosage before converting to the appropriate total daily dose of divalproex sodium extended-release tablets.There is insufficient data to allow a conversion factor recommendation for patients with divalproex sodium tablets doses above 3125 mg/day. Plasma valproate C concentrations for divalproex sodium extended-release tablets on average are equivalent to divalproex sodium tablets, but may vary across patients after conversion. If satisfactory clinical response has not been achieved, plasma levels should be measured to determine whether or not they are in the usually accepted therapeutic range (50 to 100 mcg/mL) . min[see Clinical Pharmacology ] (12.2)
2.5 General Dosing Advice
Dosing in Elderly Patients
Due to a decrease in unbound clearance of valproate and possibly a greater sensitivity to somnolence in the elderly, the starting dose should be reduced in these patients. Starting doses in the elderly lower than 250 mg can only be achieved by the use of divalproex sodium tablets. Dosage should be increased more slowly and with regular monitoring for fluid and nutritional intake, dehydration, somnolence, and other adverse reactions. Dose reductions or discontinuation of valproate should be considered in patients with decreased food or fluid intake and in patients with excessive somnolence. The ultimate therapeutic dose should be achieved on the basis of both tolerability and clinical response . [see Warnings and Precautions , Use in Specific Populations and Clinical Pharmacology ] (5.15)(8.5)(12.3)
Dose-Related Adverse Reactions
The frequency of adverse effects (particularly elevated liver enzymes and thrombocytopenia) may be dose-related. The probability of thrombocytopenia appears to increase significantly at total valproate concentrations of ≥ 110 mcg/mL (females) or ≥ 135 mcg/mL (males) . The benefit of improved therapeutic effect with higher doses should be weighed against the possibility of a greater incidence of adverse reactions. [see Warnings and Precautions ] (5.9)
G.I. Irritation
Patients who experience G.I. irritation may benefit from administration of the drug with food or by slowly building up the dose from an initial low level.
Compliance
Patients should be informed to take divalproex sodium extended-release tablets every day as prescribed. If a dose is missed it should be taken as soon as possible, unless it is almost time for the next dose. If a dose is skipped, the patient should not double the next dose.
2.1 Mania
Divalproex sodium extended-release tablets are administered orally. The recommended initial dose is 25 mg/kg/day given once daily. The dose should be increased as rapidly as possible to achieve the lowest therapeutic dose which produces the desired clinical effect or the desired range of plasma concentrations. In a placebo-controlled clinical trial of acute mania or mixed type, patients were dosed to a clinical response with a trough plasma concentration between 85 and 125 mcg/mL. The maximum recommended dosage is 60 mg/kg/day.
There is no body of evidence available from controlled trials to guide a clinician in the longer term management of a patient who improves during divalproex sodium extended-release tablets treatment of an acute manic episode. While it is generally agreed that pharmacological treatment beyond an acute response in mania is desirable, both for maintenance of the initial response and for prevention of new manic episodes, there are no data to support the benefits of divalproex sodium extended-release tablets in such longer-term treatment (i.e., beyond 3 weeks).
2.2 Epilepsy
Divalproex sodium extended-release tablets are administered orally, and must be swallowed whole. As divalproex sodium extended-release tablets dosage is titrated upward, concentrations of clonazepam, diazepam, ethosuximide, lamotrigine, tolbutamide, phenobarbital, carbamazepine, and/or phenytoin may be affected . [see Drug Interactions ] (7.2)
Complex Partial Seizures
For adults and children 10 years of age or older.
Monotherapy (Initial Therapy)
Divalproex sodium extended-release tablets has not been systematically studied as initial therapy. Patients should initiate therapy at 10 to 15 mg/kg/day. The dosage should be increased by 5 to 10 mg/kg/week to achieve optimal clinical response. Ordinarily, optimal clinical response is achieved at daily doses below 60 mg/kg/day. If satisfactory clinical response has not been achieved, plasma levels should be measured to determine whether or not they are in the usually accepted therapeutic range (50 to 100 mcg/mL). No recommendation regarding the safety of valproate for use at doses above 60 mg/kg/day can be made.
The probability of thrombocytopenia increases significantly at total trough valproate plasma concentrations above 110 mcg/mL in females and 135 mcg/mL in males. The benefit of improved seizure control with higher doses should be weighed against the possibility of a greater incidence of adverse reactions.
Conversion to Monotherapy
Patients should initiate therapy at 10 to 15 mg/kg/day. The dosage should be increased by 5 to 10 mg/kg/week to achieve optimal clinical response. Ordinarily, optimal clinical response is achieved at daily doses below 60 mg/kg/day. If satisfactory clinical response has not been achieved, plasma levels should be measured to determine whether or not they are in the usually accepted therapeutic range (50 - 100 mcg/mL). No recommendation regarding the safety of valproate for use at doses above 60 mg/kg/day can be made.
Concomitant antiepilepsy drug (AED) dosage can ordinarily be reduced by approximately 25% every 2 weeks. This reduction may be started at initiation of divalproex sodium extended-release tablets therapy, or delayed by 1 to 2 weeks if there is a concern that seizures are likely to occur with a reduction. The speed and duration of withdrawal of the concomitant AED can be highly variable, and patients should be monitored closely during this period for increased seizure frequency.
Adjunctive Therapy
Divalproex sodium extended-release tablets may be added to the patient's regimen at a dosage of 10 to 15 mg/kg/day. The dosage may be increased by 5 to 10 mg/kg/week to achieve optimal clinical response. Ordinarily, optimal clinical response is achieved at daily doses below 60 mg/kg/day. If satisfactory clinical response has not been achieved, plasma levels should be measured to determine whether or not they are in the usually accepted therapeutic range (50 to 100 mcg/mL). No recommendation regarding the safety of valproate for use at doses above 60 mg/kg/day can be made.
In a study of adjunctive therapy for complex partial seizures in which patients were receiving either carbamazepine or phenytoin in addition to valproate, no adjustment of carbamazepine or phenytoin dosage was needed . However, since valproate may interact with these or other concurrently administered AEDs as well as other drugs, periodic plasma concentration determinations of concomitant AEDs are recommended during the early course of therapy . [see Clinical Studies ] (14.2)[see Drug Interactions ] (7)
Simple and Complex Absence Seizures
The recommended initial dose is 15 mg/kg/day, increasing at one week intervals by 5 to 10 mg/kg/day until seizures are controlled or side effects preclude further increases. The maximum recommended dosage is 60 mg/kg/day.
A good correlation has not been established between daily dose, serum concentrations, and therapeutic effect. However, therapeutic valproate serum concentration for most patients with absence seizures is considered to range from 50 to 100 mcg/mL. Some patients may be controlled with lower or higher serum concentrations . [see Clinical Pharmacology ] (12.3)
As divalproex sodium extended-release tablets dosage is titrated upward, blood concentrations of phenobarbital and/or phenytoin may be affected . [see Drug Interactions ] (7.2)
Antiepilepsy drugs should not be abruptly discontinued in patients in whom the drug is administered to prevent major seizures because of the strong possibility of precipitating status epilepticus with attendant hypoxia and threat to life.
2.3 Migraine
Divalproex sodium extended-release tablets are indicated for prophylaxis of migraine headaches in adults.
The recommended starting dose is 500 mg once daily for 1 week, thereafter increasing to 1000 mg once daily. Although doses other than 1000 mg once daily of divalproex sodium extended-release tablets have not been evaluated in patients with migraine, the effective dose range of divalproex sodium tablets in these patients is 500-1000 mg/day. As with other valproate products, doses of divalproex sodium extended-release tablets should be individualized and dose adjustment may be necessary. If a patient requires smaller dose adjustments than that available with divalproex sodium extended-release tablets, divalproex sodium tablets should be used instead.
2.4 Conversion from Divalproex Sodium Tablets to Divalproex Sodium Extended-Release Tablets
In adult patients and pediatric patients 10 years of age or older with epilepsy previously receiving divalproex sodium tablets, divalproex sodium extended-release tablets should be administered once-daily using a dose 8 to 20% higher than the total daily dose of divalproex sodium tablets . For patients whose divalproex sodium tablets total daily dose cannot be directly converted to divalproex sodium extended-release tablets, consideration may be given at the clinician’s discretion to increase the patient’s divalproex sodium tablets total daily dose to the next higher dosage before converting to the appropriate total daily dose of divalproex sodium extended-release tablets. (Table 1)
Table 1. Dose Conversion Divalproex Sodium Tablets Divalproex Sodium Extended-Release Tablets Total Daily Dose (mg) (mg) 500* - 625 750 750* - 875 1000 1000*-1125 1250 1250-1375 1500 1500-1625 1750 1750 2000 1875-2000 2250 2125-2250 2500 2375 2750 2500-2750 3000 2875 3250 3000-3125 3500 * These total daily doses of divalproex sodium tablets cannot be directly converted to an 8 to 20% higher total daily dose of divalproex sodium extended-release tablets because the required dosing strengths of divalproex sodium extended-release tablets are not available. Consideration may be given at the clinician's discretion to increase the patient's divalproex sodium tablets total daily dose to the next higher dosage before converting to the appropriate total daily dose of divalproex sodium extended-release tablets.There is insufficient data to allow a conversion factor recommendation for patients with divalproex sodium tablets doses above 3125 mg/day. Plasma valproate C concentrations for divalproex sodium extended-release tablets on average are equivalent to divalproex sodium tablets, but may vary across patients after conversion. If satisfactory clinical response has not been achieved, plasma levels should be measured to determine whether or not they are in the usually accepted therapeutic range (50 to 100 mcg/mL) . min[see Clinical Pharmacology ] (12.2)
2.5 General Dosing Advice
Dosing in Elderly Patients
Due to a decrease in unbound clearance of valproate and possibly a greater sensitivity to somnolence in the elderly, the starting dose should be reduced in these patients. Starting doses in the elderly lower than 250 mg can only be achieved by the use of divalproex sodium tablets. Dosage should be increased more slowly and with regular monitoring for fluid and nutritional intake, dehydration, somnolence, and other adverse reactions. Dose reductions or discontinuation of valproate should be considered in patients with decreased food or fluid intake and in patients with excessive somnolence. The ultimate therapeutic dose should be achieved on the basis of both tolerability and clinical response . [see Warnings and Precautions , Use in Specific Populations and Clinical Pharmacology ] (5.15)(8.5)(12.3)
Dose-Related Adverse Reactions
The frequency of adverse effects (particularly elevated liver enzymes and thrombocytopenia) may be dose-related. The probability of thrombocytopenia appears to increase significantly at total valproate concentrations of ≥ 110 mcg/mL (females) or ≥ 135 mcg/mL (males) . The benefit of improved therapeutic effect with higher doses should be weighed against the possibility of a greater incidence of adverse reactions. [see Warnings and Precautions ] (5.9)
G.I. Irritation
Patients who experience G.I. irritation may benefit from administration of the drug with food or by slowly building up the dose from an initial low level.
Compliance
Patients should be informed to take divalproex sodium extended-release tablets every day as prescribed. If a dose is missed it should be taken as soon as possible, unless it is almost time for the next dose. If a dose is skipped, the patient should not double the next dose.
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Ziprasidone Hydrochloride
2.1 Schizophrenia
Dose Selection
Ziprasidone hydrochloride capsules should be administered at an initial daily dose of 20 mg twice daily with food. In some patients, daily dosage may subsequently be adjusted on the basis of individual clinical status up to 80 mg twice daily. Dosage adjustments, if indicated, should generally occur at intervals of not less than 2 days, as steady-state is achieved within 1 to 3 days. In order to ensure use of the lowest effective dose, patients should ordinarily be observed for improvement for several weeks before upward dosage adjustment.
Efficacy in schizophrenia was demonstrated in a dose range of 20 mg to 100 mg twice daily in short-term, placebo-controlled clinical trials. There were trends toward dose response within the range of 20 mg to 80 mg twice daily, but results were not consistent. An increase to a dose greater than 80 mg twice daily is not generally recommended. The safety of doses above 100 mg twice daily has not been systematically evaluated in clinical trials [see ]. CLINICAL STUDIES ( ) 14.1
Maintenance Treatment
While there is no body of evidence available to answer the question of how long a patient treated with ziprasidone should remain on it, a maintenance study in patients who had been symptomatically stable and then randomized to continue ziprasidone or switch to placebo demonstrated a delay in time to relapse for patients receiving ziprasidone hydrochloride capsules. [see ]. No additional benefit was demonstrated for doses above 20 mg twice daily. Patients should be periodically reassessed to determine the need for maintenance treatment. CLINICAL STUDIES ( ) 14.1
2.4 Dosing in Special Populations
Dosage adjustments are generally not required on the basis of age, gender, race, or renal or hepatic impairment. Ziprasidone hydrochloride capsules are not approved for use in children or adolescents. Oral:
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Lorazepam
Lorazepam tablets, USP are administered orally. For optimal results, dose, frequency of administration, and duration of therapy should be individualized according to patient response. To facilitate this, 0.5 mg, 1 mg, and 2 mg tablets are available.
The usual range is 2 to 6 mg/day given in divided doses, the largest dose being taken before bedtime, but the daily dosage may vary from 1 to 10 mg/day.
For anxiety, most patients require an initial dose of 2 to 3 mg/day given b.i.d. or t.i.d.
For insomnia due to anxiety or transient situational stress, a single daily dose of 2 to 4 mg may be given, usually at bedtime.
For elderly or debilitated patients, an initial dosage of 1 to 2 mg/day in divided doses is recommended, to be adjusted as needed and tolerated.
The dosage of lorazepam should be increased gradually when needed to help avoid adverse effects. When higher dosage is indicated, the evening dose should be increased before the daytime doses.
-
Divalproex Sodium
Mania
Divalproex sodium delayed-release tablets are administered orally. The recommended initial dose is 750 mg daily in divided doses. The dose should be increased as rapidly as possible to achieve the lowest therapeutic dose which produces the desired clinical effect or the desired range of plasma concentrations. In placebo-controlled clinical trials of acute mania, patients were dosed to a clinical response with a trough plasma concentration between 50 and 125 µg/mL. Maximum concentrations were generally achieved within 14 days. The maximum recommended dosage is 60 mg/kg/day.
There is no body of evidence available from controlled trials to guide a clinician in the longer term management of a patient who improves during divalproex sodium delayed-release tablets treatment of an acute manic episode. While it is generally agreed that pharmacological treatment beyond an acute response in mania is desirable, both for maintenance of the initial response and for prevention of new manic episodes, there are no systematically obtained data to support the benefits of divalproex sodium delayed-release tablets in such longer-term treatment. Although there are no efficacy data that specifically address longer-term antimanic treatment with divalproex sodium delayed-release tablets, the safety of divalproex sodium delayed-release tablets in long-term use is supported by data from record reviews involving approximately 360 patients treated with divalproex sodium delayed-release tablets for greater than 3 months.
Epilepsy
Divalproex sodium delayed-release tablets are administered orally. Divalproex sodium delayed-release tablets are indicated as monotherapy and adjunctive therapy in complex partial seizures in adults and pediatric patients down to the age of 10 years, and in simple and complex absence seizures. As the divalproex sodium delayed-release tablets dosage is titrated upward, concentrations of phenobarbital, carbamazepine, and/or phenytoin may be affected (see , ). PRECAUTIONSDrug Interactions
Complex Partial Seizures
For adults and children 10 years of age or older.
Monotherapy (Initial Therapy)
Divalproex sodium delayed-release tablets have not been systematically studied as initial therapy. Patients should initiate therapy at 10 to 15 mg/kg/day. The dosage should be increased by 5 to 10 mg/kg/week to achieve optimal clinical response. Ordinarily, optimal clinical response is achieved at daily doses below 60 mg/kg/day. If satisfactory clinical response has not been achieved, plasma levels should be measured to determine whether or not they are in the usually accepted therapeutic range (50 to 100 µg/mL). No recommendation regarding the safety of valproate for use at doses above 60 mg/kg/day can be made.
The probability of thrombocytopenia increases significantly at total trough valproate plasma concentrations above 110 µg/mL in females and 135 µg/mL in males. The benefit of improved seizure control with higher doses should be weighed against the possibility of a greater incidence of adverse reactions.
Conversion to Monotherapy
Patients should initiate therapy at 10 to 15 mg/kg/day. The dosage should be increased by 5 to 10 mg/kg/week to achieve optimal clinical response. Ordinarily, optimal clinical response is achieved at daily doses below 60 mg/kg/day. If satisfactory clinical response has not been achieved, plasma levels should be measured to determine whether or not they are in the usually accepted therapeutic range (50-100 µg/mL). No recommendation regarding the safety of valproate for use at doses above 60 mg/kg/day can be made. Concomitant antiepilepsy drug (AED) dosage can ordinarily be reduced by approximately 25% every 2 weeks. This reduction may be started at initiation of divalproex sodium delayed-release tablets therapy, or delayed by 1 to 2 weeks if there is a concern that seizures are likely to occur with a reduction. The speed and duration of withdrawal of the concomitant AED can be highly variable, and patients should be monitored closely during this period for increased seizure frequency.
Adjunctive Therapy
Divalproex sodium delayed-release tablets may be added to the patient's regimen at a dosage of 10 to 15 mg/kg/day. The dosage may be increased by 5 to 10 mg/kg/week to achieve optimal clinical response. Ordinarily, optimal clinical response is achieved at daily doses below 60 mg/kg/day. If satisfactory clinical response has not been achieved, plasma levels should be measured to determine whether or not they are in the usually accepted therapeutic range (50 to 100 µg/mL). No recommendation regarding the safety of valproate for use at doses above 60 mg/kg/day can be made. If the total daily dose exceeds 250 mg, it should be given in divided doses.
In a study of adjunctive therapy for complex partial seizures in which patients were receiving either carbamazepine or phenytoin in addition to divalproex sodium delayed-release tablets, no adjustment of carbamazepine or phenytoin dosage was needed (see ). However, since valproate may interact with these or other concurrently administered AEDs as well as other drugs (see ), periodic plasma concentration determinations of concomitant AEDs are recommended during the early course of therapy (see , ). CLINICAL STUDIESDrug InteractionsPRECAUTIONSDrug Interactions
Simple and Complex Absence Seizures
The recommended initial dose is 15 mg/kg/day, increasing at one week intervals by 5 to 10 mg/kg/day until seizures are controlled or side effects preclude further increases. The maximum recommended dosage is 60 mg/kg/day. If the total daily dose exceeds 250 mg, it should be given in divided doses.
A good correlation has not been established between daily dose, serum concentrations, and therapeutic effect. However, therapeutic valproate serum concentrations for most patients with absence seizures is considered to range from 50 to 100 µg/mL. Some patients may be controlled with lower or higher serum concentrations (see ). CLINICAL PHARMACOLOGY
As the divalproex sodium delayed-release tablets dosage is titrated upward, blood concentrations of phenobarbital and/or phenytoin may be affected (see ). PRECAUTIONS
Antiepilepsy drugs should not be abruptly discontinued in patients in whom the drug is administered to prevent major seizures because of the strong possibility of precipitating status epilepticus with attendant hypoxia and threat to life.
In epileptic patients previously receiving valproic acid therapy, divalproex sodium delayed-release tablets should be initiated at the same daily dose and dosing schedule. After the patient is stabilized on divalproex sodium delayed-release tablets, a dosing schedule of two or three times a day may be elected in selected patients.
Migraine
Divalproex sodium delayed-release tablets are administered orally. The recommended starting dose is 250 mg twice daily. Some patients may benefit from doses up to 1000 mg/day. In the clinical trials, there was no evidence that higher doses led to greater efficacy.
General Dosing Advice
Dosing in Elderly Patients
Due to a decrease in unbound clearance of valproate and possibly a greater sensitivity to somnolence in the elderly, the starting dose should be reduced in these patients. Dosage should be increased more slowly and with regular monitoring for fluid and nutritional intake, dehydration, somnolence, and other adverse events. Dose reductions or discontinuation of valproate should be considered in patients with decreased food or fluid intake and in patients with excessive somnolence. The ultimate therapeutic dose should be achieved on the basis of both tolerability and clinical response (see ). WARNINGS
Dose-Related Adverse Events
The frequency of adverse effects (particularly elevated liver enzymes and thrombocytopenia) may be dose-related. The probability of thrombocytopenia appears to increase significantly at total valproate concentrations of ≥ 110 µg/mL (females) or ≥ 135 µg/mL (males) (see ). The benefit of improved therapeutic effect with higher doses should be weighed against the possibility of a greater incidence of adverse reactions. PRECAUTIONS
G.I. Irritation
Patients who experience G.I. irritation may benefit from administration of the drug with food or by slowly building up the dose from an initial low level.
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Hydroxyzine Pamoate
For symptomatic relief of anxiety and tension associated with psychoneurosis and as an adjunct in organic disease states in which anxiety is manifested: in adults, 50 mg to 100 mg q.i.d.; children under 6 years, 50 mg daily in divided doses; and over 6 years, 50 mg to 100 mg daily in divided doses.
For use in the management of pruritus due to allergic conditions such as chronic urticaria and atopic and contact dermatoses, and in histamine-mediated pruritus: in adults, 25 mg t.i.d. or q.i.d.; children under 6 years, 50 mg daily in divided doses; and over 6 years, 50 mg to 100 mg daily in divided doses.
As a sedative when used as a premedication and following general anesthesia: 50 mg to 100 mg in adults, and 0.6 mg/kg in children. When treatment is initiated by the intramuscular route of administration, subsequent doses may be administered orally.
As with all medications, the dosage should be adjusted according to the patient's response to therapy.
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Olanzapine
2.1 Schizophrenia
— Oral olanzapine should be administered on a once-a-day schedule without regard to meals, generally beginning with 5 to 10 mg initially, with a target dose of 10 mg/day within several days. Further dosage adjustments, if indicated, should generally occur at intervals of not less than 1 week, since steady state for olanzapine would not be achieved for approximately 1 week in the typical patient. When dosage adjustments are necessary, dose increments/decrements of 5 mg QD are recommended. Efficacy in schizophrenia was demonstrated in a dose range of 10 to 15 mg/day in clinical trials. However, doses above 10 mg/day were not demonstrated to be more efficacious than the 10 mg/day dose. An increase to a dose greater than the target dose of 10 mg/day (i.e., to a dose of 15 mg/day or greater) is recommended only after clinical assessment. Olanzapine is not indicated for use in doses above 20 mg/day. — The recommended starting dose is 5 mg in patients who are debilitated, who have a predisposition to hypotensive reactions, who otherwise exhibit a combination of factors that may result in slower metabolism of olanzapine (e.g., nonsmoking female patients ≥65 years of age), or who may be more pharmacodynamically sensitive to olanzapine . When indicated, dose escalation should be performed with caution in these patients. — The effectiveness of oral olanzapine, 10 mg/day to 20 mg/day, in maintaining treatment response in schizophrenic patients who had been stable on olanzapine for approximately 8 weeks and were then followed for relapse has been demonstrated in a placebo-controlled trial . The physician who elects to use olanzapine for extended periods should periodically reevaluate the long-term usefulness of the drug for the individual patient.
Adults Dose Selection Dosing in Special Populations [see Warnings and Precautions ( ), Drug Interactions ( ), and Clinical Pharmacology ( )] 5.14712.3 Maintenance Treatment [see Clinical Studies ( )] 14.1 Adolescents dosing information in pediatric patients with schizophrenia is approved for Eli Lilly and Company’s olanzapine drug product labeling. However, due to Eli Lilly and Company’s marketing exclusivity rights, this drug product is not labeled with that pediatric information. Pediatric2.2 Bipolar I Disorder (Manic or Mixed Episodes)
— Oral olanzapine should be administered on a once-a-day schedule without regard to meals, generally beginning with 10 or 15 mg. Dosage adjustments, if indicated, should generally occur at intervals of not less than 24 hours, reflecting the procedures in the placebo-controlled trials. When dosage adjustments are necessary, dose increments/decrements of 5 mg QD are recommended. Short-term (3 to 4 weeks) antimanic efficacy was demonstrated in a dose range of 5 mg to 20 mg/day in clinical trials. The safety of doses above 20 mg/day has not been evaluated in clinical trials . — The benefit of maintaining bipolar I patients on monotherapy with oral olanzapine at a dose of 5 to 20 mg/day, after achieving a responder status for an average duration of 2 weeks, was demonstrated in a controlled trial . The physician who elects to use olanzapine for extended periods should periodically reevaluate the long-term usefulness of the drug for the individual patient. — When administered as adjunctive treatment to lithium or valproate, oral olanzapine dosing should generally begin with 10 mg once-a-day without regard to meals. was demonstrated in a dose range of 5 mg to 20 mg/day in clinical trials . The safety of doses above 20 mg/day has not been evaluated in clinical trials.
Adults Dose Selection for Monotherapy [see Clinical Studies ( )] 14.2 Maintenance Monotherapy [see Clinical Studies ( )] 14.2 for Adjunctive Treatment Dose Selection Antimanic efficacy [see Clinical Studies ( )] 14.2 Adolescents dosing information in pediatric patients with bipolar I disorder is approved for Eli Lilly and Company’s olanzapine drug product labeling. However, due to Eli Lilly and Company’s marketing exclusivity rights, this drug product is not labeled with that pediatric information. Pediatric2.5 Olanzapine and Fluoxetine in Combination: Depressive Episodes Associated with Bipolar I Disorder
When using olanzapine and fluoxetine in combination, also refer to the Clinical Studies section of the package insert for Symbyax*. Oral olanzapine should be administered in combination with fluoxetine once daily in the evening, without regard to meals, generally beginning with 5 mg of oral olanzapine and 20 mg of fluoxetine. Dosage adjustments, if indicated, can be made according to efficacy and tolerability within dose ranges of oral olanzapine 5 mg to 12.5 mg and fluoxetine 20 mg to 50 mg. Antidepressant efficacy was demonstrated with olanzapine and fluoxetine in combination in adult patients with a dose range of olanzapine 6 mg to 12 mg and fluoxetine 25 mg to 50 mg. Safety and efficacy of olanzapine and fluoxetine in combination was determined in clinical trials supporting approval of Symbyax* (fixed dose combination of olanzapine and fluoxetine). Symbyax* is dosed between 3 mg/25 mg (olanzapine/fluoxetine) per day and 12 mg/50 mg (olanzapine/fluoxetine) per day. The following table demonstrates the appropriate individual component doses of olanzapine and fluoxetine versus Symbyax*. Dosage adjustments, if indicated, should be made with the individual components according to efficacy and tolerability. While there is no body of evidence to answer the question of how long a patient treated with olanzapine and fluoxetine in combination should remain on it, it is generally accepted that bipolar I disorder, including the depressive episodes associated with bipolar I disorder, is a chronic illness requiring chronic treatment. The physician should periodically reexamine the need for continued pharmacotherapy. Safety of coadministration of doses above 18 mg olanzapine with 75 mg fluoxetine has not been evaluated in clinical studies. monotherapy is not indicated for the treatment of depressive episodes associated with bipolar I disorder.
Table 1: Approximate Dose Correspondence Between Symbyax * and the Combination of Olanzapine and Fluoxetine a For Symbyax* (mg/day) Use in Combination Olanzapine (mg/day) Fluoxetine (mg/day) Symbyax* (olanzapine/fluoxetine hydrochloride) is a fixed-dose combination of olanzapine and fluoxetine. a 3 mg olanzapine/25 mg fluoxetine 2.5 20 6 mg olanzapine/25 mg fluoxetine 5 20 12 mg olanzapine/25 mg fluoxetine 10+2.5 20 6 mg olanzapine/50 mg fluoxetine 5 40+10 12 mg olanzapine/50 mg fluoxetine 10+2.5 40+10 Olanzapine2.7 Olanzapine and Fluoxetine in Combination: Dosing in Special Populations
The starting dose of oral olanzapine 2.5 mg to 5 mg with fluoxetine 20 mg should be used for patients with a predisposition to hypotensive reactions, patients with hepatic impairment, or patients who exhibit a combination of factors that may slow the metabolism of olanzapine or fluoxetine in combination (female gender, geriatric age, nonsmoking status), or those patients who may be pharmacodynamically sensitive to olanzapine. Dosing modification may be necessary in patients who exhibit a combination of factors that may slow metabolism. When indicated, dose escalation should be performed with caution in these patients. Olanzapine and fluoxetine in combination have not been systematically studied in patients over 65 years of age or in patients <18 years of age .
[see Warnings and Precautions ( ), Drug Interactions ( ), and Clinical Pharmacology ( )] 5.14712.3 -
Clozaril
2.1 Required Laboratory Testing Prior to Initiation and During Therapy
Prior to initiating treatment with CLOZARIL, obtain a complete blood count (CBC) with differential. The absolute neutrophil count (ANC) must be greater than or equal to 2000/mm and the WBC must be greater than or equal to 3500 mm in order to initiate treatment. To continue treatment, the ANC and WBC must be monitored regularly . 33[see Warnings and Precautions (5.1)]
2.2 Dosing Information
The starting dose is 12.5 mg once daily or twice daily. The total daily dose can be increased in increments of 25 mg to 50 mg per day, if well-tolerated, to achieve a target dose of 300 mg to 450 mg per day (administered in divided doses) by the end of 2 weeks. Subsequently, the dose can be increased once weekly or twice weekly, in increments of up to 100 mg. The maximum dose is 900 mg per day. To minimize the risk of orthostatic hypotension, bradycardia, and syncope, it is necessary to use this low starting dose, gradual titration schedule, and divided dosages . [see Warnings and Precautions (5.3)]
CLOZARIL can be taken with or without food . [see Pharmacokinetics (12.3)]
2.3 Maintenance Treatment
Generally, it is recommended that patients responding to CLOZARIL continue maintenance treatment on their effective dose beyond the acute episode.
2.4 Discontinuation of Treatment
In the event of planned termination of CLOZARIL therapy, reduce the dose gradually over a period of 1 to 2 weeks. If abrupt discontinuation is necessary (because of agranulocytosis or another medical condition, for example), monitor carefully for the recurrence of psychotic symptoms and symptoms related to cholinergic rebound such as profuse sweating, headache, nausea, vomiting, and diarrhea.
2.5 Re-Initiation of Treatment
When restarting CLOZARIL in patients who have discontinued CLOZARIL (i.e., 2 days or more since the last dose), re-initiate with 12.5-mg once daily or twice daily. This is necessary to minimize the risk of hypotension, bradycardia, and syncope . If that dose is well tolerated, the dose may be increased to the previously therapeutic dose more quickly than recommended for initial treatment. [see Warnings and Precautions (5.3)]
2.6 Dosage Adjustments with Concomitant use of CYP1A2, CYP2D6, CYP3A4 Inhibitors or CYP1A2, CYP3A4 Inducers
Dose adjustments may be necessary in patients with concomitant use of: strong CYP1A2 inhibitors (e.g., fluvoxamine, ciprofloxacin, or enoxacin); moderate or weak CYP1A2 inhibitors (e.g., oral contraceptives, or caffeine); CYP2D6 or CYP3A4 inhibitors (e.g., cimetidine, escitalopram, erythromycin, paroxetine, bupropion, fluoxetine, quinidine, duloxetine, terbinafine, or sertraline); CYP3A4 inducers (e.g., phenytoin, carbamazepine, St. John’s wort, and rifampin); or CYP1A2 inducers (e.g., tobacco smoking) (Table 1) . [see Drug Interactions (7)]
Table 1. Dose Adjustment in Patients Taking Concomitant Medications Comedications Scenarios Initiating CLOZARIL while taking a comedication Adding a comedication while taking CLOZARIL Discontinuing a comedication while continuing CLOZARIL Strong CYP1A2 Inhibitors Use one-third of the CLOZARIL dose. Increase CLOZARIL dose based on clinical response. Moderate or Weak CYP1A2 Inhibitors Monitor for adverse reactions. Consider reducing the CLOZARIL dose if necessary. Monitor for lack of effectiveness. Consider increasing CLOZARIL dose if necessary. CYP2D6 or CYP3A4 Inhibitors Strong CYP3A4 Inducers Concomitant use is not recommended. However, if the inducer is necessary, it may be necessary to increase the CLOZARIL dose. Monitor for decreased effectiveness. Reduce CLOZARIL dose based on clinical response. Moderate or weak CYP1A2 or CYP3A4 Inducers Monitor for decreased effectiveness. Consider increasing the CLOZARIL dose if necessary. Monitor for adverse reactions. Consider reducing the CLOZARIL dose if necessary.2.7 Renal or Hepatic Impairment or CYP2D6 Poor Metabolizers
It may be necessary to reduce the CLOZARIL dose in patients with significant renal or hepatic impairment, or in CYP2D6 poor metabolizers . [see Use in Specific Populations (8.6, 8.7)]
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Sulfamethoxazole And Trimethoprim
Oral administration is preferred. Although most patients with malabsorption cannot absorb food folates, they are able to absorb folic acid, USP given orally. Parenteral administration is not advocated but may be necessary in some individuals (e.g., patients receiving parenteral or enteral alimentation). Doses greater than 0.1 mg should not be used unless anemia due to vitamin B deficiency has been ruled out or is being adequately treated with a cobalamin. Daily doses greater than 1 mg do not enhance the hematologic effect, and most of the excess is excreted unchanged in the urine. 12
The usual therapeutic dosage in adults and children (regard less of age) is up to 1 mg daily. Resistant cases may require larger doses.
When clinical symptoms have subsided and the blood picture has become normal, a daily maintenance level should be used, i.e., 0.1 mg for infants and up to 0.3 mg for children under 4 years of age, 0.4 mg for adults and children 4 or more years of age, and 0.8 mg for pregnant and lactating women, but never less than 0.1 mg/day. Patients should be kept under close supervision and adjustment of the maintenance level made if relapse appears imminent.
In the presence of alcoholism, hemolytic anemia, anticonvulsant therapy, or chronic infection, the maintenance level may need to be increased.
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Quetiapine Fumarate
2.1 Important Administration Instructions
Quetiapine fumarate tablets can be taken with or without food.
2.2 Recommended Dosing
The recommended initial dose, titration, dose range and maximum quetiapine fumarate tablets dose for each approved indication is displayed in Table 1. After initial dosing, adjustments can be made upwards or downwards, if necessary, depending upon the clinical response and tolerability of the patient [see and ]. Clinical Studies(14.1)(14.2)
Table 1: Recommended Dosing for Quetiapine Fumarate Tablets Indication Initial Dose and Titration Recommended Dose Maximum DoseSchizophrenia-Adults
Day 1: 25 mg twice daily. Increase in increments of 25 mg to 50 mg divided two or three times on Days 2 and 3 to range of 300 to 400 mg by Day 4.
Further adjustments can be made in increments of 25 to 50 mg twice a day, in intervals of not less than 2 days.
150 to 750 mg/day
750 mg/day
Schizophrenia-Adolescents (13 to 17 years)
Day 1: 25 mg twice daily.
Day 2: Twice daily dosing totaling 100 mg.
Day 3: Twice daily dosing totaling 200 mg.
Day 4: Twice daily dosing totaling 300 mg.
Day 5: Twice daily dosing totaling 400 mg.
Further adjustments should be in increments no greater than 100 mg/day within the recommended dose range of 400 to 800 mg/day. Based on response and tolerability, may be administered three times daily.
400 to 800 mg/day
800 mg/day
Schizophrenia-Maintenance
N/A 1
400 to 800 mg/day
800 mg/day
Bipolar Mania- Adults Monotherapy or as an adjunct to lithium or divalproex
Day 1: Twice daily dosing totaling 100 mg.
Day 2: Twice daily dosing totaling 200 mg.
Day 3: Twice daily dosing totaling 300 mg.
Day 4: Twice daily dosing totaling 400 mg.
Further dosage adjustments up to 800 mg/day by Day 6 should be in increments of no greater than 200 mg/day.
400 to 800 mg/day
800 mg/day
Bipolar Mania- Children and Adolescents (10 to 17 years), Monotherapy
Day 1: 25 mg twice daily.
Day 2: Twice daily dosing totaling 100 mg.
Day 3: Twice daily dosing totaling 200 mg.
Day 4: Twice daily dosing totaling 300 mg.
Day 5: Twice daily dosing totaling 400 mg.
Further adjustments should be in increments no greater than 100 mg/day within the recommended dose range of 400 to 600 mg/day. Based on response and tolerability, may be administered three times daily.
400 to 600 mg/day
600 mg/day
Bipolar Depression-Adults
Administer once daily at bedtime.
Day 1: 50 mg
Day 2: 100 mg
Day 3: 200 mg
Day 4: 300 mg
300 mg/day
300 mg/day
Bipolar I Disorder Maintenance Therapy- Adults
Administer twice daily totaling 400 to 800 mg/day as adjunct to lithium or divalproex. Generally, in the maintenance phase, patients continued on the same dose on which they were stabilized.
400 to 800 mg/day
800 mg/day
N/A Not applicable 1
Maintenance Treatment for Schizophrenia and Bipolar I Disorder
Maintenance — Patients should be periodically reassessed to determine the need for maintenance treatment and the appropriate dose for such treatment Treatment[see ]. Clinical Studies (14.2)
2.3 Dose Modifications in Elderly Patients
Consideration should be given to a slower rate of dose titration and a lower target dose in the elderly and in patients who are debilitated or who have a predisposition to hypotensive reactions . When indicated, dose escalation should be performed with caution in these patients. [see ] Clinical Pharmacology (12.3)
Elderly patients should be started on quetiapine fumarate tablets 50 mg/day and the dose can be increased in increments of 50 mg/day depending on the clinical response and tolerability of the individual patient.
2.4 Dose Modifications in Hepatically Impaired Patients
Patients with hepatic impairment should be started on 25 mg/day. The dose should be increased daily in increments of 25 mg/day to 50 mg/day to an effective dose, depending on the clinical response and tolerability of the patient.
2.5 Dose Modifications when used with CYP3A4 Inhibitors
Quetiapine fumarate tablets dose should be reduced to one sixth of original dose when co-medicated with a potent CYP3A4 inhibitor (e.g. ketoconazole, itraconazole, indinavir, ritonavir, nefazodone, etc.). When the CYP3A4 inhibitor is discontinued, the dose of quetiapine fumarate tablets should be increased by 6 fold . [see and ] Clinical Pharmacology (12.3)Drug Interactions (7.1)
2.6 Dose Modifications when used with CYP3A4 Inducers
Quetiapine fumarate tablets dose should be increased up to 5 fold of the original dose when used in combination with a chronic treatment (e.g., greater than 7 to 14 days) of a potent CYP3A4 inducer (e.g. phenytoin, carbamazepine, rifampin, avasimibe, St. John’s wort etc.). The dose should be titrated based on the clinical response and tolerability of the individual patient. When the CYP3A4 inducer is discontinued, the dose of quetiapine fumarate tablets should be reduced to the original level within 7 to 14 days . [see and ] Clinical Pharmacology (12.3)Drug Interactions (7.1)
2.7 Reinitiation of Treatment in Patients Previously Discontinued
Although there are no data to specifically address re-initiation of treatment, it is recommended that when restarting therapy of patients who have been off quetiapine fumarate tablets for more than one week, the initial dosing schedule should be followed. When restarting patients who have been off quetiapine fumarate tablets for less than one week, gradual dose escalation may not be required and the maintenance dose may be reinitiated.
2.8 Switching from Antipsychotics
There are no systematically collected data to specifically address switching patients with schizophrenia from antipsychotics to quetiapine fumarate tablets, or concerning concomitant administration with antipsychotics. While immediate discontinuation of the previous antipsychotic treatment may be acceptable for some patients with schizophrenia, more gradual discontinuation may be most appropriate for others. In all cases, the period of overlapping antipsychotic administration should be minimized. When switching patients with schizophrenia from depot antipsychotics, if medically appropriate, initiate quetiapine fumarate tablets therapy in place of the next scheduled injection. The need for continuing existing EPS medication should be re-evaluated periodically.
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Hydroxyzine Pamoate
For symptomatic relief of anxiety and tension associated with psychoneurosis and as an adjunct in organic disease states in which anxiety is manifested: in adults, 50–100 mg q.i.d.; children under 6 years, 50 mg daily in divided doses; and over 6 years, 50–100 mg daily in divided doses. For use in the management of pruritus due to allergic conditions such as chronic urticaria and atopic and contact dermatoses, and in histamine-mediated pruritus: in adults, 25 mg t.i.d. or q.i.d.; children under 6 years, 50 mg daily in divided doses; and over 6 years, 50–100 mg daily in divided doses. As a sedative when used as a premedication and following general anesthesia: 50–100 mg in adults, and 0.6 mg/kg in children. When treatment is initiated by the intramuscular route of administration, subsequent doses may be administered orally. As with all medications, the dosage should be adjusted according to the patient's response to therapy.
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Nicotine Patch
If you are under 18 years of age, ask a doctor before use Before using this product, read the enclosed self-help guide for complete directions and other information Stop smoking completely when you begin using the patch If you smoke more than 10 cigarettes per day, use the following schedule: Weeks 1 thru 4 Weeks 5 and 6 Weeks 7 and 8 STEP 1 STEP 2 STEP 3 use one 21 mg patch/day use one 14 mg patch/day use one 7 mg patch/day If you smoke 10 or start with for 6 weeks, then for 2 weeks and then stop less cigarettes per day,Step 2Step 3 Apply one new patch every 24 hours on skin that is dry, clean, and hairless Remove backing from patch and immediately press onto skin. Hold for 10 seconds. Wash hands after applying or removing patch. Save pouch to use for patch disposal. Dispose of used patch by folding sticky ends together and putting in pouch. The used patch should be removed and a new one applied to a different skin site at the same time each day If you have vivid dreams, you may remove the patch at bedtime and apply a new one in the morning Do not wear more than one patch at a time Do not cut patch in half or into smaller pieces Do not leave patch on for more than 24 hours because it may irritate your skin and loses strength after 24 hours Stop using the patch at the end of 8 weeks. If you still feel the need to use the patch talk to your doctor.
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Zolpidem Tartrate
2.1 Dosage in Adults
Use the lowest effective dose for the patient. The recommended initial dose is 5 mg for women and either 5 or 10 mg for men, taken only once per night immediately before bedtime with at least 7-8 hours remaining before the planned time of awakening. If the 5 mg dose is not effective, the dose can be increased to 10 mg. In some patients, the higher morning blood levels following use of the 10 mg dose increase the risk of next day impairment of driving and other activities that require full alertness . The total dose of zolpidem tartrate tablets should not exceed 10 mg once daily immediately before bedtime. [see Warnings and Precautions (5.1)]
The recommended initial doses for women and men are different because zolpidem clearance is lower in women.
2.2 Special Populations
Elderly or debilitated patients may be especially sensitive to the effects of zolpidem tartrate. Patients with hepatic insufficiency do not clear the drug as rapidly as normal subjects. The recommended dose of zolpidem tartrate in both of these patient populations is 5 mg once daily immediately before bedtime [see Warnings and Precautions (5.1); Use in Specific Populations (8.5)].
2.3 Use with CNS Depressants
Dosage adjustment may be necessary when zolpidem tartrate tablets are combined with other CNS depressant drugs because of the potentially additive effects . [see Warnings and Precautions (5.1)]
2.4 Administration
The effect of zolpidem tartrate tablets may be slowed by ingestion with or immediately after a meal.
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Amitriptyline Hydrochloride
Oral Dosage
Dosage should be initiated at a low level and increased gradually, noting carefully the clinical response and any evidence of intolerance.
Initial Dosage for Adults
For outpatients, 75 mg of amitriptyline HCl a day in divided doses is usually satisfactory. If necessary, this may be increased to a total of 150 mg per day. Increases are made preferably in the late afternoon and/or bedtime doses. A sedative effect may be apparent before the antidepressant effect is noted, but an adequate therapeutic effect may take as long as 30 days to develop.
An alternate method of initiating therapy in outpatients is to begin with 50 to 100 mg amitriptyline HCl at bedtime. This may be increased by 25 or 50 mg as necessary in the bedtime dose to a total of 150 mg per day.
Hospitalized patients may require 100 mg a day initially. This can be increased gradually to 200 mg a day if necessary. A small number of hospitalized patients may need as much as 300 mg a day.
Adolescent and Elderly Patients
In general, lower dosages are recommended for these patients. Ten mg 3 times a day with 20 mg at bedtime may be satisfactory in adolescent and elderly patients who do not tolerate higher dosages.
Maintenance
The usual maintenance dosage of amitriptyline HCl is 50 to 100 mg per day. In some patients, 40 mg per day is sufficient. For maintenance therapy, the total daily dosage may be given in a single dose, preferably at bedtime. When satisfactory improvement has been reached, dosage should be reduced to the lowest amount that will maintain relief of symptoms. It is appropriate to continue maintenance therapy 3 months or longer to lessen the possibility of relapse.
Usage in Pediatric Patients
In view of the lack of experience with the use of this drug in pediatric patients, it is not recommended at the present time for patients under 12 years of age.
Plasma Levels
Because of the wide variation in the absorption and distribution of tricyclic antidepressants in body fluids, it is difficult to directly correlate plasma levels and therapeutic effect. However, determination of plasma levels may be useful in identifying patients who appear to have toxic effects and may have excessively high levels, or those in whom lack of absorption or noncompliance is suspected. Because of increased intestinal transit time and decreased hepatic metabolism in elderly patients, plasma levels are generally higher for a given oral dose of amitriptyline hydrochloride than in younger patients. Elderly patients should be monitored carefully and quantitative serum levels obtained as clinically appropriate. Adjustments in dosage should be made according to the patient’s clinical response and not on the basis of plasma levels. 2
2 Hollister, L.E.; Monitoring Tricyclic Antidepressant Plasma Concentrations. JAMA 1979; 241(23):2530-2533. -
Clonidine Hydrochloride
Adults
The dose of clonidine hydrochloride tablets USP must be adjusted according to the patient's individual blood pressure response. The following is a general guide to its administration.
Initial Dose
0.1 mg tablet twice daily (morning and bedtime). Elderly patients may benefit from a lower initial dose.
Maintenance Dose
Further increments of 0.1 mg per day may be made at weekly intervals if necessary until the desired response is achieved. Taking the larger portion of the oral daily dose at bedtime may minimize transient adjustment effects of dry mouth and drowsiness. The therapeutic doses most commonly employed have ranged from 0.2 mg to 0.6 mg per day given in divided doses. Studies have indicated that 2.4 mg is the maximum effective daily dose, but doses as high as this have rarely been employed.
Renal Impairment
Patients with renal impairment may benefit from a lower initial dose. Patients should be carefully monitored. Since only a minimal amount of clonidine is removed during routine hemodialysis, there is no need to give supplemental clonidine following dialysis.
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Invega
2.1 Schizophrenia
Adults
The recommended dose of INVEGA (paliperidone) Extended-Release Tablets for the treatment of schizophrenia in adults is 6 mg administered once daily. Initial dose titration is not required. Although it has not been systematically established that doses above 6 mg have additional benefit, there was a general trend for greater effects with higher doses. This must be weighed against the dose-related increase in adverse reactions. Thus, some patients may benefit from higher doses, up to 12 mg/day, and for some patients, a lower dose of 3 mg/day may be sufficient. Dose increases above 6 mg/day should be made only after clinical reassessment and generally should occur at intervals of more than 5 days. When dose increases are indicated, increments of 3 mg/day are recommended. The maximum recommended dose is 12 mg/day. ®
In a longer-term study, INVEGA has been shown to be effective in delaying time to relapse in patients with schizophrenia who were stabilized on INVEGA for 6 weeks . INVEGA should be prescribed at the lowest effective dose for maintaining clinical stability and the physician should periodically reevaluate the long-term usefulness of the drug in individual patients. ®®[see ] Clinical Studies (14)®
Adolescents (12–17 years of age)
The recommended starting dose of INVEGA (paliperidone) Extended-Release Tablets for the treatment of schizophrenia in adolescents 12–17 years of age is 3 mg administered once daily. Initial dose titration is not required. Dose increases, if considered necessary, should be made only after clinical reassessment and should occur at increments of 3 mg/day at intervals of more than 5 days. Prescribers should be mindful that, in the adolescent schizophrenia study, there was no clear enhancement to efficacy at the higher doses, i.e., 6 mg for subjects weighing less than 51 kg and 12 mg for subjects weighing 51 kg or greater, while adverse events were dose-related. ®
2.2 Schizoaffective Disorder
The recommended dose of INVEGA (paliperidone) Extended-Release Tablets for the treatment of schizoaffective disorder in adults is 6 mg administered once daily. Initial dose titration is not required. Some patients may benefit from lower or higher doses within the recommended dose range of 3 to 12 mg once daily. A general trend for greater effects was seen with higher doses. This trend must be weighed against dose-related increase in adverse reactions. Dosage adjustment, if indicated, should occur only after clinical reassessment. Dose increases, if indicated, generally should occur at intervals of more than 4 days. When dose increases are indicated, increments of 3 mg/day are recommended. The maximum recommended dose is 12 mg/day. ®
2.3 Administration Instructions
INVEGA can be taken with or without food. ®
INVEGA must be swallowed whole with the aid of liquids. Tablets should not be chewed, divided, or crushed. The medication is contained within a nonabsorbable shell designed to release the drug at a controlled rate. The tablet shell, along with insoluble core components, is eliminated from the body; patients should not be concerned if they occasionally notice in their stool something that looks like a tablet. ®
2.4 Use with Risperidone
Concomitant use of INVEGA with risperidone has not been studied. Since paliperidone is the major active metabolite of risperidone, consideration should be given to the additive paliperidone exposure if risperidone is coadministered with INVEGA . ®®
2.5 Dosage in Special Populations
Renal Impairment
Dosing must be individualized according to the patient's renal function status. For patients with mild renal impairment (creatinine clearance ≥ 50 mL/min to < 80 mL/min), the recommended initial dose of INVEGA is 3 mg once daily. The dose may then be increased to a maximum of 6 mg once daily based on clinical response and tolerability. For patients with moderate to severe renal impairment (creatinine clearance ≥ 10 mL/min to < 50 mL/min), the recommended initial dose of INVEGA is 1.5 mg once daily, which may be increased to a maximum of 3 mg once daily after clinical reassessment. As INVEGA has not been studied in patients with creatinine clearance below 10 mL/min, use is not recommended in such patients. ®®®[See ] Clinical Pharmacology (12.3)
Hepatic Impairment
For patients with mild to moderate hepatic impairment, (Child-Pugh Classification A and B), no dose adjustment is recommended . INVEGA has not been studied in patients with severe hepatic impairment. [see ] Clinical Pharmacology (12.3)®
Elderly
Because elderly patients may have diminished renal function, dose adjustments may be required according to their renal function status. In general, recommended dosing for elderly patients with normal renal function is the same as for younger adult patients with normal renal function. For patients with moderate to severe renal impairment (creatinine clearance 10 mL/min to < 50 mL/min), the maximum recommended dose of INVEGA is 3 mg once daily . ®[see ] Renal Impairment above
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Duloxetine Delayed-release
Duloxetine Delayed-release Capsules should be swallowed whole and should not be chewed or crushed, nor should the capsule be opened and its contents sprinkled on food or mixed with liquids. All of these might affect the enteric coating. Duloxetine Delayed-release Capsules can be given without regard to meals.
2.1 Initial Treatment
— Duloxetine Delayed-release Capsules should be administered at a total dose of 40 mg/day (given as 20 mg twice daily) to 60 mg/day (given either once daily or as 30 mg twice daily). For some patients, it may be desirable to start at 30 mg once daily for 1 week, to allow patients to adjust to the medication before increasing to 60 mg once daily. While a 120 mg/day dose was shown to be effective, there is no evidence that doses greater than 60 mg/day confer any additional benefits. The safety of doses above 120 mg/day has not been adequately evaluated . Major Depressive Disorder[see ] Clinical Studies (14.1)
— For most patients, the recommended starting dose for Duloxetine Delayed-release Capsules is 60 mg administered once daily. For some patients, it may be desirable to start at 30 mg once daily for 1 week, to allow patients to adjust to the medication before increasing to 60 mg once daily. While a 120 mg once daily dose was shown to be effective, there is no evidence that doses greater than 60 mg/day confer additional benefit. Nevertheless, if a decision is made to increase the dose beyond 60 mg once daily, dose increases should be in increments of 30 mg once daily. The safety of doses above 120 mg once daily has not been adequately evaluated . Generalized Anxiety Disorder[see ] Clinical Studies (14.2)
— The recommended dose for Duloxetine Delayed-release Capsules is 60 mg administered once daily. There is no evidence that doses higher than 60 mg confer additional significant benefit and the higher dose is clearly less well tolerated . For patients for whom tolerability is a concern, a lower starting dose may be considered. Diabetic Peripheral Neuropathic Pain[see ] Clinical Studies (14.3)
Since diabetes is frequently complicated by renal disease, a lower starting dose and gradual increase in dose should be considered for patients with renal impairment [see , , and ]. Dosage and Administration (2.3)Use in Specific Populations (8.10)Clinical Pharmacology (12.3)
— The recommended dose for Duloxetine Delayed-release Capsules is 60 mg once daily. Dosing may be started at 30 mg for one week, to allow patients to adjust to the medication before increasing to 60 mg once daily. There is no evidence that higher doses confer additional benefit, even in patients who do not respond to a 60 mg dose, and higher doses are associated with a higher rate of adverse reactions . Chronic Musculoskeletal Pain[see ] Clinical Studies (14.5)
2.2 Maintenance/Continuation/Extended Treatment
— It is generally agreed that acute episodes of major depression require several months or longer of sustained pharmacologic therapy. Maintenance of efficacy in MDD was demonstrated with Duloxetine Delayed-release Capsules as monotherapy. Duloxetine Delayed-release Capsules should be administered at a total dose of 60 mg once daily. Patients should be periodically reassessed to determine the need for maintenance treatment and the appropriate dose for such treatment . Major Depressive Disorder[see ] Clinical Studies (14.1)
— It is generally agreed that episodes of generalized anxiety disorder require several months or longer of sustained pharmacological therapy. Maintenance of efficacy in GAD was demonstrated with Duloxetine Delayed-release Capsules as monotherapy. Duloxetine Delayed-release Capsules should be administered in a dose range of 60-120 mg once daily. Patients should be periodically reassessed to determine the continued need for maintenance treatment and the appropriate dose for such treatment . Generalized Anxiety Disorder[see ] Clinical Studies (14.2)
— As the progression of diabetic peripheral neuropathy is highly variable and management of pain is empirical, the effectiveness of Duloxetine Delayed-release Capsules must be assessed individually. Efficacy beyond 12 weeks has not been systematically studied in placebo-controlled trials. Diabetic Peripheral Neuropathic Pain
— The efficacy of Duloxetine Delayed-release Capsules has not been established in placebo-controlled studies beyond 13 weeks. Chronic Musculoskeletal Pain
2.3 Dosing in Special Populations
— It is recommended that Duloxetine Delayed-release Capsules should ordinarily not be administered to patients with any hepatic insufficiency . Hepatic Insufficiency[see and ] Warnings and Precautions (5.13)Use in Specific Populations (8.9)
— Duloxetine Delayed-release Capsules are not recommended for patients with end-stage renal disease or severe renal impairment (estimated creatinine clearance <30 mL/min) . Severe Renal Impairment[see and ] Warnings and Precautions (5.13)Use in Specific Populations (8.10)
— No dose adjustment is recommended for elderly patients on the basis of age. As with any drug, caution should be exercised in treating the elderly. When individualizing the dosage in elderly patients, extra care should be taken when increasing the dose . Elderly Patients[see ] Use in Specific Populations (8.5)
— There are no adequate and well-controlled studies in pregnant women; therefore, Duloxetine Delayed-release Capsules should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus . Pregnant Women[see ] Use in Specific Populations (8.1)
— Because the safety of duloxetine in infants is not known, nursing while on Duloxetine Delayed-release Capsules is not recommended . Nursing Mothers[see ] Use in Specific Populations (8.3)
2.4 Discontinuing Duloxetine Delayed-release Capsules
Symptoms associated with discontinuation of Duloxetine Delayed-release Capsules and other SSRIs and SNRIs have been reported. A gradual reduction in the dose rather than abrupt cessation is recommended whenever possible . [see ] Warnings and Precautions (5.7)
2.5 Switching a Patient To or From a Monoamine Oxidase Inhibitor (MAOI) Intended to Treat Psychiatric Disorders
At least 14 days should elapse between discontinuation of an MAOI intended to treat psychiatric disorders and initiation of therapy with Duloxetine Delayed-release Capsules. Conversely, at least 5 days should be allowed after stopping Duloxetine Delayed-release Capsules before starting an MAOI intended to treat psychiatric disorders [see ]. Contraindications (4.1)
2.6 Use of Duloxetine Delayed-release Capsules with Other MAOIs such as Linezolid or Methylene Blue
Do not start Duloxetine Delayed-release Capsules in a patient who is being treated with linezolid or intravenous methylene blue because there is an increased risk of serotonin syndrome. In a patient who requires more urgent treatment of a psychiatric condition, other interventions, including hospitalization, should be considered [see ] Contraindications (4.1)
In some cases, a patient already receiving Duloxetine Delayed-release Capsules therapy may require urgent treatment with linezolid or intravenous methylene blue. If acceptable alternatives to linezolid or intravenous methylene blue treatment are not available and the potential benefits of linezolid or intravenous methylene blue treatment are judged to outweigh the risks of serotonin syndrome in a particular patient, Duloxetine Delayed-release Capsules should be stopped promptly, and linezolid or intravenous methylene blue can be administered. The patient should be monitored for symptoms of serotonin syndrome for 5 days or until 24 hours after the last dose of linezolid or intravenous methylene blue, whichever comes first. Therapy with Duloxetine Delayed-release Capsules may be resumed 24 hours after the last dose of linezolid or intravenous methylene blue [see ]. Warnings and Precautions (5.4)
The risk of administering methylene blue by non-intravenous routes (such as oral tablets or by local injection) or in intravenous doses much lower than 1 mg/kg with Duloxetine Delayed-release Capsules is unclear. The clinician should, nevertheless, be aware of the possibility of emergent symptoms of serotonin syndrome with such use . [see ] Warnings and Precautions (5.4)
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Olanzapine
2.1 Schizophrenia
Adults
Dose Selection
Olanzapine should be administered on a once-a-day schedule without regard to meals, generally beginning with 5 to 10 mg initially, with a target dose of 10 mg/day within several days. Further dosage adjustments, if indicated, should generally occur at intervals of not less than 1 week, since steady state for olanzapine would not be achieved for approximately 1 week in the typical patient. When dosage adjustments are necessary, dose increments/decrements of 5 mg QD are recommended.
Efficacy in schizophrenia was demonstrated in a dose range of 10 to 15 mg/day in clinical trials. However, doses above 10 mg/day were not demonstrated to be more efficacious than the 10 mg/day dose. An increase to a dose greater than the target dose of 10 mg/day (i.e., to a dose of 15 mg/day or greater) is recommended only after clinical assessment. Olanzapine is not indicated for use in doses above 20 mg/day.
Dosing in Special Populations
The recommended starting dose is 5 mg in patients who are debilitated, who have a predisposition to hypotensive reactions, who otherwise exhibit a combination of factors that may result in slower metabolism of olanzapine (e.g., nonsmoking female patients ≥ 65 years of age), or who may be more pharmacodynamically sensitive to olanzapine [ ]. When indicated, dose escalation should be performed with caution in these patients. see Warnings and Precautions ( ), Drug Interactions ( ), and Clinical Pharmacology ( ) 5.14712.3
Maintenance Treatment
The effectiveness of oral olanzapine, 10 mg/day to 20 mg/day, in maintaining treatment response in schizophrenic patients who had been stable on olanzapine for approximately 8 weeks and were then followed for relapse has been demonstrated in a placebo-controlled trial [ ]. The physician who elects to use olanzapine for extended periods should periodically reevaluate the long-term usefulness of the drug for the individual patient. see Clinical Studies ( ) 14.1
Adolescents
Dose Selection
Olanzapine should be administered on a once-a-day schedule without regard to meals with a recommended starting dose of 2.5 or 5 mg, with a target dose of 10 mg/day. Efficacy in adolescents with schizophrenia was demonstrated based on a flexible dose range of 2.5 to 20 mg/day in clinical trials, with a mean modal dose of 12.5 mg/day (mean dose of 11.1 mg/day). When dosage adjustments are necessary, dose increments/decrements of 2.5 or 5 mg are recommended.
The safety and effectiveness of doses above 20 mg/day have not been evaluated in clinical trials [ )]. see Clinical Studies (14.1
Maintenance Treatment
The efficacy of olanzapine for the maintenance treatment of schizophrenia in the adolescent population has not been systematically evaluated; however, maintenance efficacy can be extrapolated from adult data along with comparisons of olanzapine pharmacokinetic parameters in adult and adolescent patients. Thus, it is generally recommended that responding patients be continued beyond the acute response, but at the lowest dose needed to maintain remission. Patients should be periodically reassessed to determine the need for maintenance treatment.
2.2 Bipolar I Disorder (Manic or Mixed Episodes)
Adults
Dose Selection for Monotherapy
Olanzapine should be administered on a once-a-day schedule without regard to meals, generally beginning with 10 or 15 mg. Dosage adjustments, if indicated, should generally occur at intervals of not less than 24 hours, reflecting the procedures in the placebo-controlled trials. When dosage adjustments are necessary, dose increments/decrements of 5 mg QD are recommended.
Short-term (3 to 4 weeks) antimanic efficacy was demonstrated in a dose range of 5 mg to 20 mg/day in clinical trials. The safety of doses above 20 mg/day has not been evaluated in clinical trials [ ]. see Clinical Studies ( ) 14.2
Maintenance Monotherapy
The benefit of maintaining bipolar I patients on monotherapy with oral olanzapine at a dose of 5 to 20 mg/day, after achieving a responder status for an average duration of 2 weeks, was demonstrated in a controlled trial [ ]. The physician who elects to use olanzapine for extended periods should periodically reevaluate the long-term usefulness of the drug for the individual patient. see Clinical Studies ( ) 14.2
Dose Selection for Adjunctive Treatment
When administered as adjunctive treatment to lithium or valproate, olanzapine dosing should generally begin with 10 mg once-a-day without regard to meals.
Antimanic efficacy was demonstrated in a dose range of 5 mg to 20 mg/day in clinical trials [ ]. The safety of doses above 20 mg/day has not been evaluated in clinical trials. see Clinical Studies ( ) 14.2
Adolescents
Dose Selection
Olanzapine should be administered on a once-a-day schedule without regard to meals with a recommended starting dose of 2.5 or 5 mg, with a target dose of 10 mg/day. Efficacy in adolescents with bipolar I disorder (manic or mixed episodes) was demonstrated based on a flexible dose range of 2.5 to 20 mg/day in clinical trials, with a mean modal dose of 10.7 mg/day (mean dose of 8.9 mg/day). When dosage adjustments are necessary, dose increments/decrements of 2.5 or 5 mg are recommended.
The safety and effectiveness of doses above 20 mg/day have not been evaluated in clinical trials [ )]. see Clinical Studies (14.2
Maintenance Treatment
The efficacy of olanzapine for the maintenance treatment of bipolar I disorder in the adolescent population has not been evaluated; however, maintenance efficacy can be extrapolated from adult data along with comparisons of olanzapine pharmacokinetic parameters in adult and adolescent patients. Thus, it is generally recommended that responding patients be continued beyond the acute response, but at the lowest dose needed to maintain remission. Patients should be periodically reassessed to determine the need for maintenance treatment.
2.5 Olanzapine and Fluoxetine in Combination: Depressive Episodes Associated with Bipolar I Disorder
When using olanzapine and fluoxetine in combination, also refer to the Clinical Studies section of the package insert for Symbyax.
Adults
Olanzapine should be administered in combination with fluoxetine once daily in the evening, without regard to meals, generally beginning with 5 mg of olanzapine and 20 mg of fluoxetine. Dosage adjustments, if indicated, can be made according to efficacy and tolerability within dose ranges of olanzapine 5 to 12.5 mg and fluoxetine 20 to 50 mg. Antidepressant efficacy was demonstrated with olanzapine and fluoxetine in combination in adult patients with a dose range of olanzapine 6 to 12 mg and fluoxetine 25 to 50 mg. Safety of coadministration of doses above 18 mg olanzapine with 75 mg fluoxetine has not been evaluated in clinical studies.
Children and Adolescents (10 to 17 years of age)
Dosage and Administration information for pediatric patients (10 to 17 years) is approved for Eli Lilly and Company’s olanzapine tablets and olanzapine orally disintegrating tablets. However, due to Eli Lilly and Company’s marketing exclusivity rights, this drug product is not labeled with that pediatric information.
Safety and efficacy of olanzapine and fluoxetine in combination was determined in clinical trials supporting approval of Symbyax (fixed dose combination of olanzapine and fluoxetine). Symbyax is dosed between 3 mg/25 mg (olanzapine/fluoxetine) per day and 12 mg/50 mg (olanzapine/fluoxetine) per day. The following table demonstrates the appropriate individual component doses of olanzapine and fluoxetine versus Symbyax. Dosage adjustments, if indicated, should be made with the individual components according to efficacy and tolerability.
Table 1: Approximate Dose Correspondence Between Symbyax and the Combination of Olanzapine and Fluoxetine * * Symbyax (olanzapine/fluoxetine HCl) is a fixed-dose combination of olanzapine and fluoxetineFor
Use in Combination
Symbyax
(mg/day)
Olanzapine
(mg/day)
Fluoxetine
(mg/day)
3 mg olanzapine/25 mg fluoxetine
6 mg olanzapine/25 mg fluoxetine
12 mg olanzapine/25 mg fluoxetine
6 mg olanzapine/50 mg fluoxetine
12 mg olanzapine/50 mg fluoxetine
2.5
5
10+2.5
5
10+2.5
20
20
20
40+10
40+10
While there is no body of evidence to answer the question of how long a patient treated with olanzapine and fluoxetine in combination should remain on it, it is generally accepted that bipolar I disorder, including the depressive episodes associated with bipolar I disorder, is a chronic illness requiring chronic treatment. The physician should periodically reexamine the need for continued pharmacotherapy.
Olanzapine monotherapy is not indicated for the treatment of depressive episodes associated with bipolar I disorder.
2.7 Olanzapine and Fluoxetine in Combination: Dosing in Special Populations
The starting dose of olanzapine 2.5 to 5 mg with fluoxetine 20 mg should be used for patients with a predisposition to hypotensive reactions, patients with hepatic impairment, or patients who exhibit a combination of factors that may slow the metabolism of olanzapine or fluoxetine in combination (female gender, geriatric age, nonsmoking status), or those patients who may be pharmacodynamically sensitive to olanzapine. Dosing modification may be necessary in patients who exhibit a combination of factors that may slow metabolism. When indicated, dose escalation should be performed with caution in these patients. Olanzapine and fluoxetine in combination have not been systematically studied in patients over 65 years of age or in patients under < 10 years of age [ ]. see Warnings and Precautions ( ), Drug Interactions ( ), and Clinical Pharmacology ( ) 5.14712.3
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Mirtazapine
Initial Treatment
The recommended starting dose for mirtazapine tablets is 15 mg/day, administered in a single dose, preferably in the evening prior to sleep. In the controlled clinical trials establishing the efficacy of mirtazapine in the treatment of major depressive disorder, the effective dose range was generally 15 to 45 mg/day. While the relationship between dose and satisfactory response in the treatment of major depressive disorder for mirtazapine has not been adequately explored, patients not responding to the initial 15-mg dose may benefit from dose increases up to a maximum of 45 mg/day.
Mirtazapine has an elimination half-life of approximately 20 to 40 hours; therefore, dose changes should not be made at intervals of less than 1 to 2 weeks in order to allow sufficient time for evaluation of the therapeutic response to a given dose.
Elderly and Patients with Renal or Hepatic Impairment
The clearance of mirtazapine is reduced in elderly patients and in patients with moderate to severe renal or hepatic impairment. Consequently, the prescriber should be aware that plasma mirtazapine levels may be increased in these patient groups, compared to levels observed in younger adults without renal or hepatic impairment (see and ). PRECAUTIONSCLINICAL PHARMACOLOGY
Maintenance/Extended Treatment
It is generally agreed that acute episodes of depression require several months or longer of sustained pharmacological therapy beyond response to the acute episode. Systematic evaluation of mirtazapine tablets has demonstrated that its efficacy in major depressive disorder is maintained for periods of up to 40 weeks following 8 to 12 weeks of initial treatment at a dose of 15 to 45 mg/day (see ). Based on these limited data, it is unknown whether or not the dose of mirtazapine needed for maintenance treatment is identical to the dose needed to achieve an initial response. Patients should be periodically reassessed to determine the need for maintenance treatment and the appropriate dose for such treatment. CLINICAL PHARMACOLOGY
Switching a Patient To or From a Monoamine Oxidase Inhibitor (MAOI) Intended to Treat Psychiatric Disorders
At least 14 days should elapse between discontinuation of an MAOI intended to treat psychiatric disorders and initiation of therapy with mirtazapine tablets. Conversely, at least 14 days should be allowed after stopping mirtazapine tablets before starting an MAOI intended to treat psychiatric disorders (see ). CONTRAINDICATIONS
Use of Mirtazapine With Other MAOIs, Such as Linezolid or Methylene Blue
Do not start mirtazapine in a patient who is being treated with linezolid or intravenous methylene blue because there is an increased risk of serotonin syndrome. In a patient who requires more urgent treatment of a psychiatric condition, other interventions, including hospitalization, should be considered (see ). CONTRAINDICATIONS
In some cases, a patient already receiving therapy with mirtazapine may require urgent treatment with linezolid or intravenous methylene blue. If acceptable alternatives to linezolid or intravenous methylene blue treatment are not available and the potential benefits of linezolid or intravenous methylene blue treatment are judged to outweigh the risks of serotonin syndrome in a particular patient, mirtazapine tablets should be stopped promptly, and linezolid or intravenous methylene blue can be administered. The patient should be monitored for symptoms of serotonin syndrome for 2 weeks or until 24 hours after the last dose of linezolid or intravenous methylene blue, whichever comes first. Therapy with mirtazapine may be resumed 24 hours after the last dose of linezolid or intravenous methylene blue (see ). WARNINGS
The risk of administering methylene blue by non-intravenous routes (such as oral tablets or by local injection) or in intravenous doses much lower than 1 mg/kg with mirtazapine is unclear. The clinician should, nevertheless, be aware of the possibility of emergent symptoms of serotonin syndrome with such use (see ). WARNINGS
Discontinuation of Mirtazapine Treatment
Symptoms associated with the discontinuation or dose reduction of mirtazapine tablets have been reported. Patients should be monitored for these and other symptoms when discontinuing treatment or during dosage reduction. A gradual reduction in the dose over several weeks, rather than abrupt cessation, is recommended whenever possible. If intolerable symptoms occur following a decrease in the dose or upon discontinuation of treatment, dose titration should be managed on the basis of the patient’s clinical response (see and ). PRECAUTIONSADVERSE REACTIONS
Information for Patients
Patients should be advised that taking mirtazapine can cause mild pupillary dilation, which in susceptible individuals, can lead to an episode of angle-closure glaucoma. Preexisting glaucoma is almost always open-angle glaucoma because angle-closure glaucoma, when diagnosed, can be treated definitively with iridectomy. Open-angle glaucoma is not a risk factor for angle-closure glaucoma. Patients may wish to be examined to determine whether they are susceptible to angle-closure, and have a prophylactic procedure (e.g., iridectomy), if they are susceptible.
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Paroxetine
Major Depressive Disorder
Usual Initial Dosage
Paroxetine should be administered as a single daily dose with or without food, usually in the morning. The recommended initial dose is 20 mg/day. Patients were dosed in a range of 20 to 50 mg/day in the clinical trials demonstrating the effectiveness of paroxetine in the treatment of major depressive disorder. As with all drugs effective in the treatment of major depressive disorder, the full effect may be delayed. Some patients not responding to a 20-mg dose may benefit from dose increases, in 10-mg/day increments, up to a maximum of 50 mg/day. Dose changes should occur at intervals of at least 1 week.
Maintenance Therapy
There is no body of evidence available to answer the question of how long the patient treated with paroxetine should remain on it. It is generally agreed that acute episodes of major depressive disorder require several months or longer of sustained pharmacologic therapy. Whether the dose needed to induce remission is identical to the dose needed to maintain and/or sustain euthymia is unknown.
Systematic evaluation of the efficacy of paroxetine has shown that efficacy is maintained for periods of up to 1 year with doses that averaged about 30 mg.
Obsessive Compulsive Disorder
Usual Initial Dosage
Paroxetine should be administered as a single daily dose with or without food, usually in the morning. The recommended dose of paroxetine in the treatment of OCD is 40 mg daily. Patients should be started on 20 mg/day and the dose can be increased in 10-mg/day increments. Dose changes should occur at intervals of at least 1 week. Patients were dosed in a range of 20 to 60 mg/day in the clinical trials demonstrating the effectiveness of paroxetine in the treatment of OCD. The maximum dosage should not exceed 60 mg/day.
Maintenance Therapy
Long-term maintenance of efficacy was demonstrated in a 6-month relapse prevention trial. In this trial, patients with OCD assigned to paroxetine demonstrated a lower relapse rate compared to patients on placebo (see ). OCD is a chronic condition, and it is reasonable to consider continuation for a responding patient. Dosage adjustments should be made to maintain the patient on the lowest effective dosage, and patients should be periodically reassessed to determine the need for continued treatment. CLINICAL PHARMACOLOGY: Clinical Trials
Panic Disorder
Usual Initial Dosage
P aroxetine should be administered as a single daily dose with or without food, usually in the morning. The target dose of paroxetine in the treatment of panic disorder is 40 mg/day. Patients should be started on 10 mg/day. Dose changes should occur in 10-mg/day increments and at intervals of at least 1 week. Patients were dosed in a range of 10 to 60 mg/day in the clinical trials demonstrating the effectiveness of paroxetine. The maximum dosage should not exceed 60 mg/day.
Maintenance Therapy
Long-term maintenance of efficacy was demonstrated in a 3-month relapse prevention trial. In this trial, patients with panic disorder assigned to paroxetine demonstrated a lower relapse rate compared to patients on placebo (see ). Panic disorder is a chronic condition, and it is reasonable to consider continuation for a responding patient. Dosage adjustments should be made to maintain the patient on the lowest effective dosage, and patients should be periodically reassessed to determine the need for continued treatment. CLINICAL PHARMACOLOGY: Clinical Trials
Social Anxiety Disorder
Usual Initial Dosage
Paroxetine should be administered as a single daily dose with or without food, usually in the morning. The recommended and initial dosage is 20 mg/day. In clinical trials the effectiveness of paroxetine was demonstrated in patients dosed in a range of 20 to 60 mg/day. While the safety of paroxetine has been evaluated in patients with social anxiety disorder at doses up to 60 mg/day, available information does not suggest any additional benefit for doses above 20 mg/day (see ). CLINICAL PHARMACOLOGY: Clinical Trials
Maintenance Therapy
There is no body of evidence available to answer the question of how long the patient treated with paroxetine should remain on it. Although the efficacy of paroxetine beyond 12 weeks of dosing has not been demonstrated in controlled clinical trials, social anxiety disorder is recognized as a chronic condition, and it is reasonable to consider continuation of treatment for a responding patient. Dosage adjustments should be made to maintain the patient on the lowest effective dosage, and patients should be periodically reassessed to determine the need for continued treatment.
Generalized Anxiety Disorder
Usual Initial Dosage
Paroxetine should be administered as a single daily dose with or without food, usually in the morning. In clinical trials the effectiveness of paroxetine was demonstrated in patients dosed in a range of 20 to 50 mg/day. The recommended starting dosage and the established effective dosage is 20 mg/day. There is not sufficient evidence to suggest a greater benefit to doses higher than 20 mg/day. Dose changes should occur in 10 mg/day increments and at intervals of at least 1 week.
Maintenance Therapy
Systematic evaluation of continuing paroxetine for periods of up to 24 weeks in patients with Generalized Anxiety Disorder who had responded while taking paroxetine during an 8-week acute treatment phase has demonstrated a benefit of such maintenance (see ). Nevertheless, patients should be periodically reassessed to determine the need for maintenance treatment. CLINICAL PHARMACOLOGY: Clinical Trials
Special Populations
Treatment of Pregnant Women During the Third Trimester
Neonates exposed to paroxetine and other SSRIs or SNRIs, late in the third trimester have developed complications requiring prolonged hospitalization, respiratory support, and tube feeding (see ). When treating pregnant women with paroxetine during the third trimester, the physician should carefully consider the potential risks and benefits of treatment. WARNINGS: Usage in Pregnancy
Dosage for Elderly or Debilitated Patients, and Patients With Severe Renal or Hepatic Impairment
The recommended initial dose is 10 mg/day for elderly patients, debilitated patients, and/or patients with severe renal or hepatic impairment. Increases may be made if indicated. Dosage should not exceed 40 mg/day.
Switchinga Patientto or From a Monoamine Oxidase Inhibitor(MAOI) Intended to Treat Psychiatric Disorders:
At least 14 days should elapse between discontinuation of an MAOI intended to treat psychiatric disorders and initiation of therapy with paroxetine Conversely, at least 14 days should be allowed after stopping paroxetine before starting an MAOI intended to treat psychiatric disorders (see ). CONTRAINDICATIONS
Use of Paroxetine With Other MAOIs, Such as Linezolid or Methylene Blue
Do not start paroxetine tablets in a patient who is being treated with linezolid or intravenous methylene blue because there is increased risk of serotonin syndrome. In a patient who requires more urgent treatment of a psychiatric condition, other interventions, including hospitalization, should be considered (see ). CONTRAINDICATIONS
In some cases, a patient already receiving therapy with paroxetine tablets may require urgent treatment with linezolid or intravenous methylene blue. If acceptable alternatives to linezolid or intravenous methylene blue treatment are not available and the potential benefits of linezolid or intravenous methylene blue treatment are judged to outweigh the risks of serotonin syndrome in a particular patient, paroxetine tablets should be stopped promptly, and linezolid or intravenous methylene blue can be administered. The patient should be monitored for symptoms of serotonin syndrome for 2 weeks or until 24 hours after the last dose of linezolid or intravenous methylene blue, whichever comes first. Therapy with paroxetine tablets may be resumed 24 hours after the last dose of linezolid or intravenous methylene blue (see ). WARNINGS
The risk of administering methylene blue by non-intravenous routes (such as oral tablets or by local injection) or in intravenous doses much lower than 1 mg/kg with paroxetine is unclear. The clinician should, nevertheless, be aware of the possibility of emergent symptoms of serotonin syndrome with such use (see ). WARNINGS
Discontinuation of Treatment With Paroxetine
Symptoms associated with discontinuation of paroxetine have been reported (see ). Patients should be monitored for these symptoms when discontinuing treatment, regardless of the indication for which paroxetine is being prescribed. A gradual reduction in the dose rather than abrupt cessation is recommended whenever possible. If intolerable symptoms occur following a decrease in the dose or upon discontinuation of treatment, then resuming the previously prescribed dose may be considered. Subsequently, the physician may continue decreasing the dose but at a more gradual rate. PRECAUTIONS:Discontinuation of Treatment With Paroxetine
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Clonazepam
Clonazepam tablets should be administered with water by swallowing the tablet whole.
Adults The initial dose for adults with seizure disorders should not exceed 1.5 mg/day divided into three doses. Dosage may be increased in increments of 0.5 to Seizure Disorders::
1 mg every 3 days until seizures are adequately controlled or until side effects preclude any further increase. Maintenance dosage must be individualized for each patient depending upon response. Maximum recommended daily dose is 20 mg.
The use of multiple anticonvulsants may result in an increase of depressant adverse effects. This should be considered before adding clonazepam to an existing anticonvulsant regimen.
Pediatric Patients Clonazepam is administered orally. In order to minimize drowsiness, the initial dose for infants and children (up to 10 years of age or 30 kg of body weight) should be between 0.01 and 0.03 mg/kg/day but not to exceed 0.05 mg/kg/day given in two or three divided doses. Dosage should be increased by no more than 0.25 to 0.5 mg every third day until a daily maintenance dose of 0.1 to 0.2 mg/kg of body weight has been reached, unless seizures are controlled or side effects preclude further increase. Whenever possible, the daily dose should be divided into three equal doses. If doses are not equally divided, the largest dose should be given before retiring. :
Geriatric Patients: There is no clinical trial experience with clonazepam in seizure disorder patients 65 years of age and older. In general, elderly patients should be started on low doses of clonazepam and observed closely (see ). PRECAUTIONS: Geriatric Use
Adults The initial dose for adults with panic disorder is 0.25 mg bid. An increase to the target dose for most patients of 1 mg/day may be made after 3 days. The recommended dose of 1 mg/day is based on the results from a fixed dose study in which the optimal effect was seen at 1 mg/day. Higher doses of 2, 3 and 4 mg/day in that study were less effective than the 1 mg/day dose and were associated with more adverse effects. Nevertheless, it is possible that some individual patients may benefit from doses of up to a maximum dose of 4 mg/day, and in those instances, the dose may be increased in increments of 0.125 to 0.25 mg bid every 3 days until panic disorder is controlled or until side effects make further increases undesired. To reduce the inconvenience of somnolence, administration of one dose at bedtime may be desirable. Panic Disorder::
Treatment should be discontinued gradually, with a decrease of 0.125 mg bid every 3 days, until the drug is completely withdrawn.
There is no body of evidence available to answer the question of how long the patient treated with clonazepam should remain on it. Therefore, the physician who elects to use clonazepam for extended periods should periodically reevaluate the long-term usefulness of the drug for the individual patient.
Pediatric Patients There is no clinical trial experience with clonazepam in panic disorder patients under 18 years of age. :
Geriatric Patients: There is no clinical trial experience with clonazepam in panic disorder patients 65 years of age and older. In general, elderly patients should be started on low doses of clonazepam and observed closely (see ). PRECAUTIONS: Geriatric Use
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Ziprasidone Hydrochloride
2.1 Schizophrenia
Dose Selection Ziprasidone hydrochloride capsules should be administered at an initial daily dose of 20 mg twice daily with food. In some patients, daily dosage may subsequently be adjusted on the basis of individual clinical status up to 80 mg twice daily. Dosage adjustments, if indicated, should generally occur at intervals of not less than 2 days, as steady-state is achieved within 1 to 3 days. In order to ensure use of the lowest effective dose, patients should ordinarily be observed for improvement for several weeks before upward dosage adjustment.
Efficacy in schizophrenia was demonstrated in a dose range of 20 mg to 100 mg twice daily in short-term, placebo-controlled clinical trials. There were trends toward dose response within the range of 20 mg to 80 mg twice daily, but results were not consistent. An increase to a dose greater than 80 mg twice daily is not generally recommended. The safety of doses above 100 mg twice daily has not been systematically evaluated in clinical trials [see ]. Clinical Studies(14.1)
Maintenance Treatment While there is no body of evidence available to answer the question of how long a patient treated with ziprasidone should remain on it, a maintenance study in patients who had been symptomatically stable and then randomized to continue ziprasidone or switch to placebo demonstrated a delay in time to relapse for patients receiving ziprasidone hydrochloride capsules [see ]. No additional benefit was demonstrated for doses above 20 mg twice daily. Patients should be periodically reassessed to determine the need for maintenance treatment. Clinical Studies(14.1)
2.4 Dosing in Special Populations
Dosage adjustments are generally not required on the basis of age, gender, race, or renal or hepatic impairment. Ziprasidone hydrochloride capsules are not approved for use in children or adolescents. Oral:
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Lamotrigine
2.1 General Dosing Considerations
There are suggestions, yet to be proven, that the risk of severe, potentially life-threatening rash may be increased by (1) coadministration of lamotrigine tablets with valproate, (2) exceeding the recommended initial dose of lamotrigine tablets, or (3) exceeding the recommended dose escalation for lamotrigine tablets. However, cases have occurred in the absence of these factors Therefore, it is important that the dosing recommendations be followed closely. Rash:[see ]. Boxed Warning
The risk of nonserious rash may be increased when the recommended initial dose and/or the rate of dose escalation of lamotrigine tablet is exceeded and in patients with a history of allergy or rash to other AEDs.
It is recommended that lamotrigine tablets not be restarted in patients who discontinued due to rash associated with prior treatment with lamotrigine, unless the potential benefits clearly outweigh the risks. If the decision is made to restart a patient who has discontinued lamotrigine, the need to restart with the initial dosing recommendations should be assessed. The greater the interval of time since the previous dose, the greater consideration should be given to restarting with the initial dosing recommendations. If a patient has discontinued lamotrigine for a period of more than 5 half-lives, it is recommended that initial dosing recommendations and guidelines be followed. The half-life of lamotrigine is affected by other concomitant medications [see ]. Clinical Pharmacology (12.3)
Drugs other than those listed in the Clinical Pharmacology section have not been systematically evaluated in combination with lamotrigine. Because lamotrigine is metabolized predominantly by glucuronic acid conjugation, drugs that are known to induce or inhibit glucuronidation may affect the apparent clearance of lamotrigine and doses of lamotrigine tablets may require adjustment based on clinical response. Lamotrigine Tablets Added to Drugs Known to Induce or Inhibit Glucuronidation:[see ] Clinical Pharmacology (12.3)
A therapeutic plasma concentration range has not been established for lamotrigine. Dosing of lamotrigine tablets should be based on therapeutic response Target Plasma Levels for Patients With Epilepsy or Bipolar Disorder:[see ]. Clinical Pharmacology (12.3)
Although estrogen-containing oral contraceptives have been shown to increase the clearance of lamotrigine no adjustments to the recommended dose-escalation guidelines for lamotrigine tablets should be necessary solely based on the use of estrogen-containing oral contraceptives. Therefore, dose escalation should follow the recommended guidelines for initiating adjunctive therapy with lamotrigine tablets based on the concomitant AED or other concomitant medications (see Table 1 or Table 5). See below for adjustments to maintenance doses of lamotrigine tablets in women taking estrogen-containing oral contraceptives. Women Taking Estrogen-Containing Oral Contraceptives:Starting Lamotrigine Tablets in Women Taking Estrogen-Containing Oral Contraceptives:[see ], Clinical Pharmacology (12.3)
Adjustments to the Maintenance Dose of Lamotrigine Tablets In Women Taking Estrogen-Containing Oral Contraceptives:
For women not taking carbamazepine, phenytoin, phenobarbital, primidone, or other drugs such as rifampin that induce lamotrigine glucuronidation the maintenance dose of lamotrigine tablets will in most cases need to be increased, by as much as 2-fold over the recommended target maintenance dose, in order to maintain a consistent lamotrigine plasma level (1) Taking Estrogen-Containing Oral Contraceptives:[see , ], Drug Interactions (7)Clinical Pharmacology (12.3)[see ]. Clinical Pharmacology (12.3)
In women taking a stable dose of lamotrigine tablets and not taking carbamazepine, phenytoin, phenobarbital, primidone, or other drugs such as rifampin that induce lamotrigine glucuronidation the maintenance dose will in most cases need to be increased by as much as 2-fold in order to maintain a consistent lamotrigine plasma level. The dose increases should begin at the same time that the oral contraceptive is introduced and continue, based on clinical response, no more rapidly than 50 to 100 mg/day every week. Dose increases should not exceed the recommended rate (see Table 1 or Table 5) unless lamotrigine plasma levels or clinical response support larger increases. Gradual transient increases in lamotrigine plasma levels may occur during the week of inactive hormonal preparation ("pill-free" week), and these increases will be greater if dose increases are made in the days before or during the week of inactive hormonal preparation. Increased lamotrigine plasma levels could result in additional adverse reactions, such as dizziness, ataxia, and diplopia. If adverse reactions attributable to lamotrigine tablets consistently occur during the "pill-free" week, dose adjustments to the overall maintenance dose may be necessary. Dose adjustments limited to the "pill-free" week are not recommended. For women taking lamotrigine tablets in addition to carbamazepine, phenytoin, phenobarbital, primidone, or other drugs such as rifampin that induce lamotrigine glucuronidation no adjustment to the dose of lamotrigine tablets should be necessary. (2) Starting Estrogen-Containing Oral Contraceptives:[see , ], Drug Interactions (7)Clinical Pharmacology (12.3)[see , ], Drug Interactions (7)Clinical Pharmacology (12.3)
For women not taking carbamazepine, phenytoin, phenobarbital, primidone, or other drugs such as rifampin that induce lamotrigine glucuronidation the maintenance dose of lamotrigine tablets will in most cases need to be decreased by as much as 50% in order to maintain a consistent lamotrigine plasma level. The decrease in dose of lamotrigine tablets should not exceed 25% of the total daily dose per week over a 2-week period, unless clinical response or lamotrigine plasma levels indicate otherwise For women taking lamotrigine tablets in addition to carbamazepine, phenytoin, phenobarbital, primidone, or other drugs such as rifampin that induce lamotrigine glucuronidation no adjustment to the dose of lamotrigine tablets should be necessary. (3) Stopping Estrogen-Containing Oral Contraceptives:[see , ], Drug Interactions (7)Clinical Pharmacology (12.3)[see ]. Clinical Pharmacology (12.3)[see , ], Drug Interactions (7)Clinical Pharmacology (12.3)
The effect of other hormonal contraceptive preparations or hormone replacement therapy on the pharmacokinetics of lamotrigine has not been systematically evaluated. It has been reported that ethinylestradiol, not progestogens, increased the clearance of lamotrigine up to 2-fold, and the progestin-only pills had no effect on lamotrigine plasma levels. Therefore, adjustments to the dosage of lamotrigine tablets in the presence of progestogens alone will likely not be needed. Women and Other Hormonal Contraceptive Preparations or Hormone Replacement Therapy:
Experience in patients with hepatic impairment is limited. Based on a clinical pharmacology study in 24 patients with mild, moderate, and severe liver impairment the following general recommendations can be made. No dosage adjustment is needed in patients with mild liver impairment. Initial, escalation, and maintenance doses should generally be reduced by approximately 25% in patients with moderate and severe liver impairment without ascites and 50% in patients with severe liver impairment with ascites. Escalation and maintenance doses may be adjusted according to clinical response. Patients With Hepatic Impairment:[see , ], Use in Specific Populations (8.6)Clinical Pharmacology (12.3)
Initial doses of lamotrigine tablets should be based on patients' concomitant medications (see Tables 1-3 or Table 5); reduced maintenance doses may be effective for patients with significant renal impairment Few patients with severe renal impairment have been evaluated during chronic treatment with lamotrigine tablets. Because there is inadequate experience in this population, lamotrigine tablets should be used with caution in these patients. Patients With Renal Impairment:[see , ]. Use in Specific Populations (8.7)Clinical Pharmacology (12.3)
Discontinuation Strategy:
For patients receiving lamotrigine tablets in combination with other AEDs, a reevaluation of all AEDs in the regimen should be considered if a change in seizure control or an appearance or worsening of adverse reactions is observed. Epilepsy:
If a decision is made to discontinue therapy with lamotrigine tablets, a step-wise reduction of dose over at least 2 weeks (approximately 50% per week) is recommended unless safety concerns require a more rapid withdrawal [see ]. Warnings and Precautions (5.9)
Discontinuing carbamazepine, phenytoin, phenobarbital, primidone or other drugs such as rifampin that induce lamotrigine glucuronidation should prolong the half-life of lamotrigine; discontinuing valproate should shorten the half-life of lamotrigine.
In the controlled clinical trials, there was no increase in the incidence, type, or severity of adverse reactions following abrupt termination of lamotrigine tablets. In clinical trials in patients with Bipolar Disorder, 2 patients experienced seizures shortly after abrupt withdrawal of lamotrigine tablets. However, there were confounding factors that may have contributed to the occurrence of seizures in these bipolar patients. Discontinuation of lamotrigine tablets should involve a step-wise reduction of dose over at least 2 weeks (approximately 50% per week) unless safety concerns require a more rapid withdrawal Bipolar Disorder:[see ]. Warnings and Precautions (5.9)
2.2 Epilepsy – Adjunctive Therapy
This section provides specific dosing recommendations for patients greater than 12 years of age and patients 2 to 12 years of age. Within each of these age-groups, specific dosing recommendations are provided depending upon concomitant AED or other concomitant medications (Table 1 for patients greater than 12 years of age and Table 2 for patients 2 to 12 years of age). A weight-based dosing guide for patients 2 to 12 years of age on concomitant valproate is provided in Table 3.
Recommended dosing guidelines are summarized in Table 1. Patients Over 12 Years of Age:
Table 1. Escalation Regimen for Lamotrigine Tablets in Patients Over 12 Years of Age With Epilepsya Valproate has been shown to inhibit glucuronidation and decrease the apparent clearance of lamotrigine [see , ]. Drug Interactions (7)Clinical Pharmacology (12.3)
b These drugs induce lamotrigine glucuronidation and increase clearance [see , ]. Other drugs that have similar effects include estrogen-containing oral contraceptives [see , ]. Dosing recommendations for oral contraceptives can be found in General Dosing Considerations [see ]. Patients on rifampin, or other drugs that induce lamotrigine glucuronidation and increase clearance, should follow the same dosing titration/maintenance regimen as that used with anticonvulsants that have this effect. Drug Interactions (7)Clinical Pharmacology (12.3)Drug Interactions (7)Clinical Pharmacology (12.3)Dosage and Administration (2.1)
For For Patients NOT TAKING For Patients Patients Carbamazepine, TAKING TAKING Phenytoin, Carbamazepine, Valproate a Phenobarbital, Phenytoin, or Primidone b, Phenobarbital, or Valproate a or Primidone b and NOT TAKING Valproate a Weeks 1 and 2 25 mg every other day 25 mg every day 50 mg/day Weeks 3 and 4 25 mg every day 50 mg/day (in 2 divided doses) 100 mg/day Weeks 5 onwards to maintenance Increase by 25 to 50 mg/day every 1 to 2 weeks Increase by 50 mg/day every 1 to 2 weeks Increase by 100 mg/day every 1 to 2 weeks. Usual maintenance dose 100 to 200 mg/day with valproate alone (in 2 divided doses). 225 to 375 mg/day (in 2 divided doses). 300 to 500 mg/day 100 to 400 mg/day with valproate and other drugs that induce glucuronidation (in 1 or 2 divided doses)Recommended dosing guidelines are summarized in Table 2. Patients 2 to 12 Years Of Age:
Smaller starting doses and slower dose escalations than those used in clinical trials are recommended because of the suggestion that the risk of rash may be decreased by smaller starting doses and slower dose escalations. Therefore, maintenance doses will take longer to reach in clinical practice than in clinical trials. It may take several weeks to months to achieve an individualized maintenance dose. Maintenance doses in patients weighing less than 30 kg, regardless of age or concomitant AED, may need to be increased as much as 50%, based on clinical response.
Table 2. Escalation Regimen for Lamotrigine Tablets in Patients 2 to 12 Years of Age With EpilepsyNote:Onlywholetabletsshouldbeusedfordosing.
a Valproate has been shown to inhibit glucuronidation and decrease the apparent clearance of lamotrigine [see , ]. Drug Interactions (7)Clinical Pharmacology (12.3)
b These drugs induce lamotrigine glucuronidation and increase clearance [see , ]. Other drugs which have similar effects include estrogen-containing oral contraceptives [see , ]. Dosing recommendations for oral contraceptives can be found in General Dosing Considerations [see ]. Patients on rifampin, or other drugs that induce lamotrigine glucuronidation and increase clearance, should follow the same dosing titration/maintenance regimen as that used with anticonvulsants that have this effect. Drug Interactions (7)Clinical Pharmacology (12.3)Drug Interactions (7)Clinical Pharmacology (12.3)Dosage and Administration (2.1)
For Patients TAKING Valproate a For Patients NOT TAKING Carbamazepine, Phenytoin, Phenobarbital, Primidone b, or Valproate a For Patients TAKING Carbamazepine, Phenytoin, Phenobarbital, or Primidone band NOT TAKING Valproate a Weeks 1 and 2 in 1 or 2 divided doses, rounded down to the nearest whole tablet (see Table 3 for weight based dosing guide). 0.15 mg/kg/day in 1 or 2 divided doses, rounded down to the nearest whole tablet. 0.3 mg/kg/day in 2 divided doses, rounded down to the nearest whole tablet. 0.6 mg/kg/day Weeks 3 and 4 in 1 or 2 divided doses, rounded down to the nearest whole tablet (see Table 3 for weight based dosing guide). 0.3 mg/kg/day in 2 divided doses, rounded down to the nearest whole tablet. 0.6 mg/kg/day in 2 divided doses, rounded down to the nearest whole tablet. 1.2 mg/kg/day Weeks 5 onwards to maintenance The dose should be increased every 1 to 2 weeks as follows: calculate 0.3 mg/kg/day, round this amount down to the nearest whole tablet, and add this amount to the previously administered daily dose. The dose should be increased every 1 to 2 weeks as follows: calculate 0.6 mg/kg/day, round this amount down to the nearest whole tablet, and add this amount to the previously administered daily dose The dose should be increased every 1 to 2 weeks as follows: calculate 1.2 mg/kg/day, round this amount down to the nearest whole tablet, and add this amount to the previously administered daily dose Usual Maintenance Dose (maximum 200 mg/day in 1 or 2 divided doses). with valproate alone 1 to 5 mg/kg/day 1 to 3 mg/kg/day (maximum 300 mg/day in 2 divided doses) 4.5 to 7.5 mg/kg/day (maximum 400 mg/day in 2 divided doses) 5 to 15 mg/kg/day Maintenance dose in patients less than 30 kg May need to be increased by as much as 50%, based on clinical response May need to be increased by as much as 50%, based on clinical response May need to be increased by as much as 50%, based on clinical response Table 3. The Initial Weight-Based Dosing Guide for Patients 2 to 12 Years Taking Valproate (Weeks 1 to 4) With Epilepsy If the patient’s weight is Give this daily dose, using the most appropriate combination of Lamotrigine 2-mg and 5-mg tablets Greater than And less than Weeks 1 and 2 Weeks 3 and 4 6.7 kg 14 kg 2 mg every day other 2 mg every day 14.1 kg 27 kg 2 mg every day 4 mg every day 27.1 kg 34 kg 4 mg every day 8 mg every day 34.1 kg 40 kg 5 mg every day 10 mg every dayThe usual maintenance doses identified in Tables 1 and 2 are derived from dosing regimens employed in the placebo-controlled adjunctive studies in which the efficacy of lamotrigine tablets was established. In patients receiving multidrug regimens employing carbamazepine, phenytoin, phenobarbital, or primidone , maintenance doses of adjunctive lamotrigine tablets as high as 700 mg/day have been used. In patients receiving , maintenance doses of adjunctive lamotrigine tablets as high as 200 mg/day have been used. The advantage of using doses above those recommended in Tables 1 through 4 has not been established in controlled trials. Usual Adjunctive Maintenance Dose for Epilepsy:without valproatevalproate alone
2.3 Epilepsy – Conversion From Adjunctive Therapy to Monotherapy
The goal of the transition regimen is to effect the conversion to monotherapy with lamotrigine tablets under conditions that ensure adequate seizure control while mitigating the risk of serious rash associated with the rapid titration of lamotrigine tablets.
The recommended maintenance dose of lamotrigine tablets as monotherapy is 500 mg/day given in two divided doses.
To avoid an increased risk of rash, the recommended initial dose and subsequent dose escalations of lamotrigine tablets should not be exceeded [see ]. Boxed Warning
After achieving a dose of 500 mg/day of lamotrigine tablets according to the guidelines in Table 1, the concomitant AED should be withdrawn by 20% decrements each week over a 4-week period. The regimen for the withdrawal of the concomitant AED is based on experience gained in the controlled monotherapy clinical trial. Conversion From Adjunctive Therapy With Carbamazepine, Phenytoin, Phenobarbital, or Primidone to Monotherapy With Lamotrigine Tablets:
Conversion from Adjunctive Therapy With Valproate to Monotherapy With Lamotrigine Tablets:
The conversion regimen involves 4 steps outlined in Table 4.
Table 4. Conversion From Adjunctive Therapy With Valproate to Monotherapy With Lamotrigine Tablets in Patients ≥16 Years of Age with Epilepsy Lamotrigine Tablets Valproate Step 1 Achieve a dose of 200 mg/day according to guidelines in Table 1 (if not already on 200 mg/day). Maintain previous stable dose. Step 2 Maintain at 200 mg/day. Decrease to 500 mg/day by decrements no greater than 500 mg/day/week and then maintain the dose of 500 mg/day for 1 week. Step 3 Increase to 300 mg/day and maintain for 1 week. Simultaneously decrease to 250 mg/day and maintain for 1 week. Step 4 Increase by 100 mg/day every week to achieve maintenance dose of 500 mg/day. Discontinue.No specific dosing guidelines can be provided for conversion to monotherapy with lamotrigine tablets with AEDs other than carbamazepine, phenobarbital, phenytoin, primidone, or valproate. Conversion from Adjunctive Therapy With AEDs Other Than Carbamazepine, Phenytoin, Phenobarbital, Primidone, or Valproate to Monotherapy With Lamotrigine Tablets:
2.4 Bipolar Disorder
The goal of maintenance treatment with lamotrigine tablets is to delay the time to occurrence of mood episodes (depression, mania, hypomania, mixed episodes) in patients treated for acute mood episodes with standard therapy. The target dose of lamotrigine tablets is 200 mg/day (100 mg/day in patients taking valproate, which decreases the apparent clearance of lamotrigine, and 400 mg/day in patients not taking valproate and taking either carbamazepine, phenytoin, phenobarbital, primidone, or other drugs such as rifampin that increase the apparent clearance of lamotrigine). In the clinical trials, doses up to 400 mg/day as monotherapy were evaluated; however, no additional benefit was seen at 400 mg/day compared with 200 mg/day Accordingly, doses above 200 mg/day are not recommended. Treatment with lamotrigine tablets is introduced, based on concurrent medications, according to the regimen outlined in Table 5. If other psychotropic medications are withdrawn following stabilization, the dose of lamotrigine tablets should be adjusted. For patients discontinuing valproate, the dose of lamotrigine tablets should be doubled over a 2-week period in equal weekly increments (see Table 6). For patients discontinuing carbamazepine, phenytoin, phenobarbital, primidone, or other drugs such as rifampin that induce lamotrigine glucuronidation, the dose of lamotrigine tablets should remain constant for the first week and then should be decreased by half over a 2-week period in equal weekly decrements (see Table 6). The dose of lamotrigine tablets may then be further adjusted to the target dose (200 mg) as clinically indicated. [see ]. Clinical Studies (14.2)
If other drugs are subsequently introduced, the dose of lamotrigine tablets may need to be adjusted. In particular, the introduction of valproate requires reduction in the dose of lamotrigine tablets [see , ]. Drug Interactions (7)Clinical Pharmacology (12.3)
To avoid an increased risk of rash, the recommended initial dose and subsequent dose escalations of lamotrigine tablets should not be exceeded [see ]. Boxed Warning
Table 5. Escalation Regimen for Lamotrigine Tablets for Patients With Bipolar Disordera Valproate has been shown to inhibit glucuronidation and decrease the apparent clearance of lamotrigine [see , ]. Drug Interactions (7)Clinical Pharmacology (12.3)
b These drugs induce lamotrigine glucuronidation and increase clearance [see , ]. Other drugs which have similar effects include estrogen-containing oral contraceptives [see , ]. Dosing recommendations for oral contraceptives can be found in General Dosing Considerations [see ]. Patients on rifampin, or other drugs that induce lamotrigine glucuronidation and increase clearance, should follow the same dosing titration/maintenance regimen as that used with anticonvulsants that have this effect. Drug Interactions (7)Clinical Pharmacology (12.3)Drug Interactions (7)Clinical Pharmacology (12.3)Dosage and Administration (2.1)
For Patients TAKING Valproate a For Patients NOT TAKING Carbamazepine, Phenytoin, Phenobarbital, Primidone b, or Valproate a For Patients TAKING Carbamazepine, Phenytoin, Phenobarbital, or Primidone b and NOT TAKING Valproate a Weeks 1 and 2 25 mg every day other 25 mg daily 50 mg daily Weeks 3 and 4 25 mg daily 50 mg daily 100 mg daily, in divided doses Week 5 50 mg daily 100 mg daily 200 mg daily, in divided doses Week 6 100 mg daily 200 mg daily 300 mg daily, in divided doses Week 7 100 mg daily 200 mg daily up to 400 mg daily, in divided doses Table 6. Dosage Adjustments to Lamotrigine Tablets for Patients With Bipolar Disorder Following Discontinuation of Psychotropic Medications Discontinuation of Psychotropic Drugs (excluding Carbamazepine, Phenytoin, Phenobarbital, Primidone b, or Valproate a) After Discontinuation of Valproate a After Discontinuation of Carbamazepine, Phenytoin, Phenobarbital, or Primidone b Current dose of lamotrigine tablets (mg/day) 100 Current dose of lamotrigine tablets (mg/day) 400a Valproate has been shown to inhibit glucuronidation and decrease the apparent clearance of lamotrigine [see , ]. Drug Interactions (7)Clinical Pharmacology (12.3)
b These drugs induce lamotrigine glucuronidation and increase clearance [see , ]. Other drugs which have similar effects include estrogen-containing oral contraceptives [see , ]. Dosing recommendations for oral contraceptives can be found in General Dosing Considerations [see ]. Patients on rifampin, or other drugs that induce lamotrigine glucuronidation and increase clearance, should follow the same dosing titration/maintenance regimen as that used with anticonvulsants that have this effect. Drug Interactions (7)Clinical Pharmacology (12.3)Drug Interactions (7)Clinical Pharmacology (12.3)Dosage and Administration (2.1)
Week 1 Maintain current dose of lamotrigine tablets 150 400 Week 2 Maintain current dose of lamotrigine tablets 200 300 Week 3 onward Maintain current dose of lamotrigine tablets 200 200The benefit of continuing treatment in patients who had been stabilized in an 8- to 16-week open-label phase with lamotrigine tablets was established in two randomized, placebo-controlled clinical maintenance trials However, the optimal duration of treatment with lamotrigine tablets has not been established. Thus, patients should be periodically reassessed to determine the need for maintenance treatment. [see ]. Clinical Studies (14.2)
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Sertraline Hydrochloride
Initial Treatment Dosage for Adults
–Sertraline hydrochloride treatment should be administered at a dose of 50 mg once daily. Major Depressive Disorder
While a relationship between dose and effect has not been established for major depressive disorder, OCD, panic disorder, PTSD or social anxiety disorder, patients were dosed in a range of 50-200 mg/day in the clinical trials demonstrating the effectiveness of Sertraline hydrochloride for the treatment of this indication. Consequently, a dose of 50 mg, administered once daily, is recommended as the initial therapeutic dose. Patients not responding to a 50 mg dose may benefit from dose increases up to a maximum of 200 mg/day. Given the 24 hour elimination half-life of sertraline hydrochloride, dose changes should not occur at intervals of less than 1 week.
– Sertraline hydrochloride treatment should be initiated with a dose of 50 mg/day, either daily throughout the menstrual cycle or limited to the luteal phase of the menstrual cycle, depending on physician assessment. Premenstrual Dysphoric Disorder
While a relationship between dose and effect has not been established for PMDD, patients were dosed in the range of 50-150 mg/day with dose increases at the onset of each new menstrual cycle (see Clinical Trials under CLINICAL PHARMACOLOGY). Patients not responding to a 50 mg/day dose may benefit from dose increases (at 50 mg increments/ menstrual cycle) up to 150 mg/day when dosing daily throughout the menstrual cycle, or 100 mg/day when dosing during the luteal phase of the menstrual cycle. If a 100 mg/day dose has been established with luteal phase dosing, a 50 mg/day titration step for three days should be utilized at the beginning of each luteal phase dosing period.
Sertraline hydrochloride should be administered once daily, either in the morning or evening.
Dosage for Pediatric Population (Children and Adolescents)
– Sertraline hydrochloride treatment should be initiated with a dose of 25 mg once daily in children (ages 6-12) and at a dose of 50 mg once daily in adolescents (ages 13-17). Obsessive-Compulsive Disorder
While a relationship between dose and effect has not been established for OCD, patients were dosed in a range of 25-200 mg/day in the clinical trials demonstrating the effectiveness of Sertraline hydrochloride for pediatric patients (6-17 years) with OCD. Patients not responding to an initial dose of 25 or 50 mg/day may benefit from dose increases up to a maximum of 200 mg/day. For children with OCD, their generally lower body weights compared to adults should be taken into consideration in advancing the dose, in order to avoid excess dosing. Given the 24 hour elimination half-life of Sertraline hydrochloride, dose changes should not occur at intervals of less than 1 week.
Sertraline hydrochloride should be administered once daily, either in the morning or evening.
Maintenance/Continuation/Extended Treatment
–It is generally agreed that acute episodes of major depressive disorder require several months or longer of sustained pharmacologic therapy beyond response to the acute episode. Systematic evaluation of sertraline hydrochloride has demonstrated that its antidepressant efficacy is maintained for periods of up to 44 weeks following 8 weeks of initial treatment at a dose of 50-200 mg/day (mean dose of 70 mg/day) (see under ). It is not known whether the dose of sertraline hydrochloride needed for maintenance treatment is identical to the dose needed to achieve an initial response. Patients should be periodically reassessed to determine the need for maintenance treatment. Major Depressive DisorderClinical TrialsCLINICAL PHARMACOLOGY
–It is generally agreed that PTSD requires several months or longer of sustained pharmacological therapy beyond response to initial treatment. Systematic evaluation of Sertraline hydrochloride has demonstrated that its efficacy in PTSD is maintained for periods of up to 28 weeks following 24 weeks of treatment at a dose of 50-200 mg/day (see under ). It is not known whether the dose of Sertraline hydrochloride needed for maintenance treatment is identical to the dose needed to achieve an initial response. Patients should be periodically reassessed to determine the need for maintenance treatment. Posttraumatic Stress DisorderClinical TrialsCLINICAL PHARMACOLOGY
–Social anxiety disorder is a chronic condition that may require several months or longer of sustained pharmacological therapy beyond response to initial treatment. Systematic evaluation of Sertraline hydrochloride has demonstrated that its efficacy in social anxiety disorder is maintained for periods of up to 24 weeks following 20 weeks of treatment at a dose of 50-200 mg/day (see under ). Dosage adjustments should be made to maintain patients on the lowest effective dose and patients should be periodically reassessed to determine the need for long-term treatment. Social Anxiety DisorderClinical TrialsCLINICAL PHARMACOLOGY
–It is generally agreed that OCD and Panic Disorder require several months or longer of sustained pharmacological therapy beyond response to initial treatment. Systematic evaluation of continuing Sertraline hydrochloride for periods of up to 28 weeks in patients with OCD and Panic Disorder who have responded while taking Sertraline hydrochloride during initial treatment phases of 24 to 52 weeks of treatment at a dose range of 50-200 mg/day has demonstrated a benefit of such maintenance treatment (see under ). It is not known whether the dose of Sertraline hydrochloride needed for maintenance treatment is identical to the dose needed to achieve an initial response. Nevertheless, patients should be periodically reassessed to determine the need for maintenance treatment. Obsessive-Compulsive Disorder and Panic DisorderClinical TrialsCLINICAL PHARMACOLOGY
–The effectiveness of sertraline hydrochloride in long-term use, that is, for more than 3 menstrual cycles, has not been systematically evaluated in controlled trials. However, as women commonly report that symptoms worsen with age until relieved by the onset of menopause, it is reasonable to consider continuation of a responding patient. Dosage adjustments, which may include changes between dosage regimens (e.g., daily throughout the menstrual cycle versus during the luteal phase of the menstrual cycle), may be needed to maintain the patient on the lowest effective dosage and patients should be periodically reassessed to determine the need for continued treatment. Premenstrual Dysphoric Disorder
At least 14 days should elapse between discontinuation of an MAOI intended to treat psychiatric disorders and initiation of therapy with Sertraline hydrochloride. Conversely, at least 14 days should be allowed after stopping Sertraline hydrochloride before starting an MAOI intended to treat psychiatric disorders (see ). Switching a Patient To or From a Monoamine Oxidase Inhibitor (MAOI) Intended to Treat Psychiatric Disorders:CONTRAINDICATIONS
Do not start Sertraline hydrochloride in a patient who is being treated with linezolid or intravenous methylene blue because there is increased risk of serotonin syndrome. In a patient who requires more urgent treatment of a psychiatric condition, other interventions, including hospitalization, should be considered (see ). Use of Sertraline Hydrochloride With Other MAOIs Such as Linezolid or Methylene Blue:CONTRAINDICATIONS
In some cases, a patient already receiving Sertraline hydrochloride therapy may require urgent treatment with linezolid or intravenous methylene blue. If acceptable alternatives to linezolid or intravenous methylene blue treatment are not available and the potential benefits of linezolid or intravenous methylene blue treatment are judged to outweigh the risks of serotonin syndrome in a particular patient, Sertraline hydrochloride should be stopped promptly, and linezolid or intravenous methylene blue can be administered. The patient should be monitored for symptoms of serotonin syndrome for 2 weeks or until 24 hours after the last dose of linezolid or intravenous methylene blue, whichever comes first. Therapy with Sertraline hydrochloride may be resumed 24 hours after the last dose of linezolid or intravenous methylene blue (see ). WARNINGS
The risk of administering methylene blue by non-intravenous routes (such as oral tablets or by local injection) or in intravenous doses much lower than 1 mg/kg with Sertraline hydrochloride is unclear. The clinician should, nevertheless, be aware of the possibility of emergent symptoms of serotonin syndrome with such use (see ). WARNINGS
Special Populations
–The use of sertraline in patients with liver disease should be approached with caution. The effects of sertraline in patients with moderate and severe hepatic impairment have not been studied. If sertraline is administered to patients with liver impairment, a lower or less frequent dose should be used (see and ). Dosage for Hepatically Impaired PatientsCLINICAL PHARMACOLOGYPRECAUTIONS
–Neonates exposed to Sertraline hydrochloride and other SSRIs or SNRIs, late in the third trimester have developed complications requiring prolonged hospitalization, respiratory support, and tube feeding (see ). When treating pregnant women with Sertraline hydrochloride during the third trimester, the physician should carefully consider the potential risks and benefits of treatment. Treatment of Pregnant Women During the Third TrimesterPRECAUTIONS
Discontinuation of Treatment with Sertraline hydrochloride
Symptoms associated with discontinuation of Sertraline hydrochloride and other SSRIs and SNRIs, have been reported (see ). Patients should be monitored for these symptoms when discontinuing treatment. A gradual reduction in the dose rather than abrupt cessation is recommended whenever possible. If intolerable symptoms occur following a decrease in the dose or upon discontinuation of treatment, then resuming the previously prescribed dose may be considered. Subsequently, the physician may continue decreasing the dose but at a more gradual rate. PRECAUTIONS
-
Seroquel Xr
2.1 Important Administration Instructions
SEROQUEL XR tablets should be swallowed whole and not split, chewed or crushed.
It is recommended that SEROQUEL XR be taken without food or with a light meal (approximately 300 calories) [see ]. Clinical Pharmacology (12.3)
SEROQUEL XR should be administered once daily, preferably in the evening.
2.2 Recommended Dosing
The recommended initial dose, titration, dose range and maximum SEROQUEL XR dose for each approved indication is displayed in Table 1 below. After initial dosing, adjustments can be made upwards or downwards, if necessary, depending upon the clinical response and tolerability of the patient [see Clinical Studies ( , and )]. 14.114.214.3
Table 1: Recommended Dosing for SEROQUEL XRIndication
Initial Dose and Titration
Recommended Dose
Maximum Dose
Schizophrenia- Adults
Day 1: 300 mg/day
Dose increases can be made at intervals as short as 1 day and in increments of up to 300 mg/day
400-800 mg/day
800 mg/day
Schizophrenia-Adolescents (13 to 17 years)
Day 1: 50 mg/day
Day 2: 100 mg/day
Day 3: 200 mg/day
Day 4: 300 mg/day
Day 5: 400 mg/day
400-800 mg/day
800 mg/day
Schizophrenia Maintenance-Monotherapy-Adults
n/a
400-800 mg/day
800 mg/day
Bipolar I Disorder manic or mixed-Acute monotherapy or adjunct to lithium or divalproex-Adults
Day 1: 300 mg/day
Day 2: 600 mg/day
Day 3: between 400 and 800 mg/day
400-800 mg/day
800 mg/day
Bipolar I Disorder, manic -Acute monotherapy -Children and Adolescents (10 to 17 years)
Day 1: 50 mg/day
Day 2: 100 mg/day
Day 3: 200 mg/day
Day 4: 300 mg/day
Day 5: 400 mg/day
400-600 mg/day
600 mg/day
Bipolar Disorder, Depressive Episodes-Adults
Day 1: 50 mg/day
Day 2: 100 mg/day
Day 3: 200 mg/day
Day 4: 300 mg/day
300 mg/day
300 mg/day
Bipolar I Disorder Maintenance- Adjunct to lithium or divalproex-Adults
n/a
400-800 mg/day
800 mg/day
Major Depressive Disorder- Adjunctive Therapy with Antidepressants-Adults
Day 1: 50 mg/day
Day 2: 50 mg/day
Day 3: 150 mg/day
150-300 mg/day
300 mg/day
n/a-not applicable
Maintenance Treatment for Schizophrenia and Bipolar I Disorder
—Patients should be periodically reassessed to determine the need for maintenance treatment and the appropriate dose for such treatment Maintenance Treatment[see Clinical Studies ( , )]. 14.114.2
2.3 Dose Modifications in Elderly Patients
Consideration should be given to a slower rate of dose titration and a lower target dose in the elderly and in patients who are debilitated or who have a predisposition to hypotensive reactions When indicated, dose escalation should be performed with caution in these patients. [see Use in Specific Populations ( , ) and ]. 8.58.7Clinical Pharmacology (12)
Elderly patients should be started on SEROQUEL XR 50 mg/day and the dose can be increased in increments of 50 mg/day depending on the clinical response and tolerability of the individual patient.
2.4 Dose Modifications in Hepatically Impaired Patients
Patients with hepatic impairment should be started on SEROQUEL XR 50 mg/day. The dose can be increased daily in increments of 50 mg/day to an effective dose, depending on the clinical response and tolerability of the patient.
2.5 Dose Modifications when used with CYP3A4 Inhibitors
SEROQUEL XR dose should be reduced to one sixth of original dose when co-medicated with a potent CYP3A4 inhibitor (e.g., ketoconazole, itraconazole, indinavir, ritonavir, nefazodone, etc.). When the CYP3A4 inhibitor is discontinued, the dose of SEROQUEL XR should be increased by 6 fold [see Clinical Pharmacology and Drug Interactions )]. (12.3)7.1
2.6 Dose Modifications when used with CYP3A4 Inducers
SEROQUEL XR dose should be increased up to 5 fold of the original dose when used in combination with a chronic treatment (e.g., greater than 7-14 days) of a potent CYP3A4 inducer (e.g., phenytoin, carbamazepine, rifampin, avasimibe, St. John’s wort etc.). The dose should be titrated based on the clinical response and tolerance of the individual patient. When the CYP3A4 inducer is discontinued, the dose of SEROQUEL XR should be reduced to the original level within 7-14 days [see Clinical Pharmacology and Drug Interactions ]. (12.3)(7.1)
2.7 Reinitiation of Treatment in Patients Previously Discontinued
Although there are no data to specifically address re-initiation of treatment, it is recommended that when restarting therapy of patients who have been off SEROQUEL XR for more than one week, the initial dosing schedule should be followed. When restarting patients who have been off SEROQUEL XR for less than one week, gradual dose escalation may not be required and the maintenance dose may be reinitiated.
2.8 Switching Patients from SEROQUEL Tablets to SEROQUEL XR Tablets
Patients who are currently being treated with SEROQUEL (immediate release formulation) may be switched to SEROQUEL XR at the equivalent total daily dose taken once daily. Individual dosage adjustments may be necessary.
2.9 Switching from Antipsychotics
There are no systematically collected data to specifically address switching patients from other antipsychotics to SEROQUEL XR, or concerning concomitant administration with other antipsychotics. While immediate discontinuation of the previous antipsychotic treatment may be acceptable for some patients, more gradual discontinuation may be most appropriate for others. In all cases, the period of overlapping antipsychotic administration should be minimized. When switching patients from depot antipsychotics, if medically appropriate, initiate SEROQUEL XR therapy in place of the next scheduled injection. The need for continuing existing extrapyramidal syndrome medication should be re-evaluated periodically.
-
Promethazine Hydrochloride
(see and Promethazine hydrochloride tablets, USP are contraindicated for children under 2 years of ageWARNINGS-Black Box Warning). Use in Pediatric Patients
Allergy
The average oral dose is 25 mg taken before retiring; however, 12.5 mg may be taken before meals and on retiring, if necessary. Single 25-mg doses at bedtime or 6.25 to 12.5 mg taken three times daily will usually suffice. After initiation of treatment in children or adults, dosage should be adjusted to the smallest amount adequate to relieve symptoms. The administration of promethazine hydrochloride in 25-mg doses will control minor transfusion reactions of an allergic nature.
Motion Sickness
The average adult dose is 25 mg taken twice daily. The initial dose should be taken one-half to one hour before anticipated travel and be repeated 8 to 12 hours later, if necessary. On succeeding days of travel, it is recommended that 25 mg be given on arising and again before the evening meal. For children, promethazine hydrochloride tablets, USP, 12.5 to 25 mg, twice daily, may be administered.
Nausea and Vomiting
Antiemetics should not be used in vomiting of unknown etiology in children and adolescents (see ). WARNINGS-Use in Pediatric Patients
The average effective dose of promethazine hydrochloride for the active therapy of nausea and vomiting in children or adults is 25 mg. When oral medication cannot be tolerated, the dose should be given parenterally (cf. Promethazine hydrochloride Injection). 12.5- to 25-mg doses may be repeated, as necessary, at 4- to 6-hour intervals.
For nausea and vomiting in children, the usual dose is 0.5 mg per pound of body weight, and the dose should be adjusted to the age and weight of the patient and the severity of the condition being treated.
For prophylaxis of nausea and vomiting, as during surgery and the postoperative period, the average dose is 25 mg repeated at 4- to 6-hour intervals, as necessary.
Sedation
This product relieves apprehension and induces a quiet sleep from which the patient can be easily aroused. Administration of 12.5 to 25 mg promethazine hydrochloride by the oral route or by rectal suppository at bedtime will provide sedation in children. Adults usually require 25 to 50 mg for nighttime, presurgical, or obstetrical sedation.
Pre- and Postoperative Use
Promethazine hydrochloride in 12.5- to 25-mg doses for children and 50-mg doses for adults the night before surgery relieves apprehension and produces a quiet sleep.
For preoperative medication, children require doses of 0.5 mg per pound of body weight in combination with an appropriately reduced dose of narcotic or barbiturate and the appropriate dose of an atropine-like drug. Usual adult dosage is 50 mg promethazine hydrochloride with an appropriately reduced dose of narcotic or barbiturate and the required amount of a belladonna alkaloid.
Postoperative sedation and adjunctive use with analgesics may be obtained by the administration of 12.5 to 25 mg in children and 25- to 50-mg doses in adults.
Promethazine hydrochloride tablets, USP are contraindicated for children under 2 years of age.
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Lorazepam
Lorazepam is administered orally. For optimal results, dose, frequency of administration, and duration of therapy should be individualized according to patient response. To facilitate this, 0.5 mg, 1 mg, and 2 mg tablets are available.
The usual range is 2 to 6 mg/day given in divided doses, the largest dose being taken before bedtime, but the daily dosage may vary from 1 to 10 mg/day.
For anxiety, most patients require an initial dose of 2 to 3 mg/day given b.i.d. or t.i.d.
For insomnia due to anxiety or transient situational stress, a single daily dose of 2 to 4 mg may be given, usually at bedtime.
For elderly or debilitated patients, an initial dosage of 1 to 2 mg/day in divided doses is recommended, to be adjusted as needed and tolerated.
The dosage of lorazepam should be increased gradually when needed to help avoid adverse effects. When higher dosage is indicated, the evening dose should be increased before the daytime doses.
-
Mi-acid Regular Strength
• shake well before use
• adults and children 12 years and older: take 2 to 4 teaspoonfuls between meals, at bedtime, or as directed by a doctor
• do not take more than 24 teaspoonfuls in 24 hours or use the maximum dosage for more than 2 weeks
• children under 12 years: ask a doctor
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Quetiapine Fumarate
2.1 Important Administration Instructions
Quetiapine fumarate tablets can be taken with or without food.
2.2 Recommended Dosing
The recommended initial dose, titration, dose range and maximum quetiapine fumarate tablets dose for each approved indication is displayed in . After initial dosing, adjustments can be made upwards or downwards, if necessary, depending upon the clinical response and tolerability of the patient Table 1[see Clinical Studies ( and )]. 14.114.2
Table 1: Recommended Dosing for Quetiapine Fumarate Tablets * N/A Not applicable Indication Initial Dose and Titration DoseRecommended
Maximum Dose
Schizophrenia-Adults
increments of 25 to 50 mg twice a day, in intervals of not less than 2 days.Day 1: 25 mg twice daily.
Increase in increments of 25 mg to 50 mg divided two or three times on Days 2 and 3 to range of 300 to 400 mg by Day 4.
Further adjustments can be made in
mg/day150 to 750
750 mg/daySchizophrenia-
Adolescents (13 to 17 years)
Based on response and tolerability, may be administered three times daily.Day 1: 25 mg twice daily.
Day 2: Twice daily dosing totaling 100 mg.
Day 3: Twice daily dosing totaling 200 mg.
Day 4: Twice daily dosing totaling 300 mg.
Day 5: Twice daily dosing totaling 400 mg.
Further adjustments should be in increments no greater than 100 mg/day within the recommended dose range of 400 to 800 mg/day.
400 to 800 mg/day
800 mg/day
Schizophrenia-
Maintenance
N/A *400 to 800
mg/day
800 mg/day
Bipolar Mania- Adults Monotherapy or as an adjunct to lithium or divalproex
Further dosage adjustments up to 800 mg/day by Day 6 should be in increments of no greater than 200 mg/day.Day 1: Twice daily dosing totaling 100 mg.
Day 2: Twice daily dosing totaling 200 mg.
Day 3: Twice daily dosing totaling 300 mg.
Day 4: Twice daily dosing totaling 400 mg.
400 to 800
mg/day
800 mg/day MonotherapyBipolar Mania-Children and Adolescents (10 to 17 years),
Day 1: 25 mg twice daily.
Day 2: Twice daily dosing totaling 100 mg.
Day 3: Twice daily dosing totaling 200 mg.
Day 4: Twice daily dosing totaling 300 mg.
Day 5: Twice daily dosing totaling 400 mg.
Further adjustments should be in increments no greater than 100 mg/day within the recommended dose range of 400 to 600 mg/day.
Based on response and tolerability, may be administered three times daily.
400 to 600
mg/day
600 mg/day AdultsBipolar Depression-
Day 4: 300 mgAdminister once daily at bedtime.
Day 1: 50 mg
Day 2: 100 mg
Day 3: 200 mg
300 mg/day 300 mg/day Maintenance Therapy- AdultsBipolar I Disorder
Generally, in the maintenance phase, patients continued on the same dose on which they were stabilized.Administer twice daily totaling 400 to 800 mg/day as adjunct to lithium or divalproex.
mg/day400 to 800
800 mg/dayMaintenance Treatment for Schizophrenia and Bipolar I Disorder
—Patients should be periodically reassessed to determine the need for maintenance treatment and the appropriate dose for such treatment Maintenance Treatment[see Clinical Studies ( )]. 14.2
2.3 Dose Modifications in Elderly Patients
Consideration should be given to a slower rate of dose titration and a lower target dose in the elderly and in patients who are debilitated or who have a predisposition to hypotensive reactions . When indicated, dose escalation should be performed with caution in these patients. [see Clinical Pharmacology( ) 12.3]
Elderly patients should be started on quetiapine fumarate tablets 50 mg/day and the dose can be increased in increments of 50 mg/day depending on the clinical response and tolerability of the individual patient .
2.4 Dose Modifications in Hepatically Impaired Patients
Patients with hepatic impairment should be started on 25 mg/day. The dose should be increased daily in increments of 25 mg/day to 50 mg/day to an effective dose, depending on the clinical response and tolerability of the patient.
2.5 Dose Modifications when used with CYP3A4 Inhibitors
Quetiapine fumarate tablets dose should be reduced to one sixth of original dose when co-medicated with a potent CYP3A4 inhibitor (e.g., ketoconazole, itraconazole, indinavir, ritonavir, nefazodone, etc.). When the CYP3A4 inhibitor is discontinued, the dose of quetiapine fumarate tablets should be increased by 6 fold . [see Clinical Pharmacology ( ) and Drug Interactions 12.3)] (7.1
2.6 Dose Modifications when used with CYP3A4 Inducers
Quetiapine fumarate tablets dose should be increased up to 5 fold of the original dose when used in combination with a chronic treatment (e.g., greater than 7 to 14 days) of a potent CYP3A4 inducer (e.g., phenytoin, carbamazepine, rifampin, avasimibe, St. John’s wort etc.). The dose should be titrated based on the clinical response and tolerability of the individual patient. When the CYP3A4 inducer is discontinued, the dose of quetiapine fumarate tablets should be reduced to the original level within 7 to 14 days . [see Clinical Pharmacology ( ) and Drug Interactions 12.3( )] 7.1
2.7 Reinitiation of Treatment in Patients Previously Discontinued
Although there are no data to specifically address re-initiation of treatment, it is recommended that when restarting therapy of patients who have been off quetiapine fumarate tablets for more than one week, the initial dosing schedule should be followed. When restarting patients who have been off quetiapine fumarate tablets for less than one week, gradual dose escalation may not be required and the maintenance dose may be reinitiated.
2.8 Switching from Antipsychotics
There are no systematically collected data to specifically address switching patients with schizophrenia from antipsychotics to quetiapine fumarate tablets, or concerning concomitant administration with antipsychotics. While immediate discontinuation of the previous antipsychotic treatment may be acceptable for some patients with schizophrenia, more gradual discontinuation may be most appropriate for others. In all cases, the period of overlapping antipsychotic administration should be minimized. When switching patients with schizophrenia from depot antipsychotics, if medically appropriate, initiate quetiapine fumarate tablets therapy in place of the next scheduled injection. The need for continuing existing EPS medication should be re-evaluated periodically.
-
Haloperidol
There is considerable variation from patient to patient in the amount of medication required for treatment. As with all antipsychotic drugs, dosage should be individualized according to the needs and response of each patient. Dosage adjustments, either upward or downward, should be carried out as rapidly as practicable to achieve optimum therapeutic control.
To determine the initial dosage, consideration should be given to the patient’s age, severity of illness, previous response to other antipsychotic drugs, and any concomitant medication or disease state. Children, debilitated or geriatric patients, as well as those with a history of adverse reactions to antipsychotic drugs, may require less haloperidol. The optimal response in such patients is usually obtained with more gradual dosage adjustments and at lower dosage levels, as recommended below.
Clinical experience suggests the following recommendations:
Oral Administration
INITIAL DOSAGE RANGE
Adults
Moderate Symptomatology 0.5 mg to 2 mg b.i.d. or t.i.d. Severe Symptomatology 3 mg to 5 mg b.i.d. or t.i.d.To achieve prompt control, higher doses may be required in some cases.
Geriatric or Debilitated Patients 0.5 mg to 2 mg b.i.d. or t.i.d. Chronic or Resistant Patients 3 mg to 5 mg b.i.d. or t.i.d. Patients who remain severely disturbed or inadequately controlled may require dosage adjustment. Daily dosages up to 100 mg may be necessary in some cases to achieve an optimal response. Infrequently, haloperidol has been used in doses above 100 mg for severely resistant patients; however, the limited clinical usage has not demonstrated the safety of prolonged administration of such doses.Children
The following recommendations apply to children between the ages of 3 and 12 years (weight range 15 to 40 kg). Haloperidol is not intended for children under 3 years old. Therapy should begin at the lowest dose possible (0.5 mg per day). If required, the dose should be increased by an increment of 0.5 mg at 5 to 7 day intervals until the desired therapeutic effect is obtained. (see chart below).
The total dose may be divided, to be given b.i.d. or t.i.d.
Psychotic Disorders 0.05 mg/kg/day to 0.15 mg/kg/day Non-Psychotic Behavior Disorders and Tourette’s Disorder 0.05 mg/kg/day to 0.075 mg/kg/day Severely disturbed psychotic children may require higher doses. In severely disturbed, non-psychotic children or in hyperactive children with accompanying conduct disorders, who have failed to respond to psychotherapy or medications other than antipsychotics, it should be noted that since these behaviors may be short-lived, short-term administration of haloperidol may suffice. There is no evidence establishing a maximum effective dosage. There is little evidence that behavior improvement is further enhanced in dosages beyond 6 mg per day.Maintenance Dosage
Upon achieving a satisfactory therapeutic response, dosage should then be gradually reduced to the lowest effective maintenance level.
Switchover Procedure
The oral form should supplant the injectable as soon as practicable. In the absence of bioavailability studies establishing bioequivalence between these two dosage forms, the following guidelines for dosage are suggested. For an initial approximation of the total daily dose required, the parenteral dose administered in the preceding 24 hours may be used. Since this dose is only an initial estimate, it is recommended that careful monitoring of clinical signs and symptoms, including clinical efficacy, sedation, and adverse effects, be carried out periodically for the first several days following the initiation of switchover. In this way, dosage adjustments, either upward or downward, can be quickly accomplished. Depending on the patient’s clinical status, the first oral dose should be given within 12-24 hours following the last parenteral dose.
-
Haloperidol
There is considerable variation from patient to patient in the amount of medication required for treatment. As with all drugs used to treat schizophrenia, dosage should be individualized according to the needs and response of each patient. Dosage adjustments, either upward or downward, should be carried out as rapidly as practicable to achieve optimum therapeutic control.
To determine the initial dosage, consideration should be given to the patient's age, severity of illness, previous response to other antipsychotic drugs, and any concomitant medication or disease state. Debilitated or geriatric patients, as well as those with a history of adverse reactions to antipsychotic drugs, may require less haloperidol. The optimal response in such patients is usually obtained with more gradual dosage adjustments and at lower dosage levels.
Parenteral medication, administered intramuscularly in doses of 2 to 5 mg, is utilized for prompt control of the acutely agitated schizophrenic patient with moderately severe to very severe symptoms. Depending on the response of the patient, subsequent doses may be given, administered as often as every hour, although 4 to 8 hour intervals may be satisfactory.
Controlled trials to establish the safety and effectiveness of intramuscular administration in children have not been conducted.
Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration, whenever solution and container permit.
Switchover Procedure
An oral form should supplant the injectable as soon as practicable. In the absence of bioavailability studies establishing bioequivalence between these two dosage forms the following guidelines for dosage are suggested. For an initial approximation of the total daily dose required, the parenteral dose administered in the preceding 24 hours may be used. Since this dose is only an initial estimate, it is recommended that careful monitoring of clinical signs and symptoms, including clinical efficacy, sedation, and adverse effects, be carried out periodically for the first several days following the initiation of switchover. In this way, dosage adjustments, either upward or downward, can be quickly accomplished. Depending on the patient's clinical status, the first oral dose should be given within 12–24 hours following the last parenteral dose.
Instructions for Opening Ampule
1. Medication often rests in the top part of the ampule. Before breaking the ampule, lightly tap the top of the ampule with your finger until all fluid moves to the bottom portion of the ampule. The ampule has a colored ring(s) and colored point which aids in the placement of fingers while breaking the ampule. Step 1 -
Enalapril Maleate
Hypertension
In patients who are currently being treated with a diuretic, symptomatic hypotension occasionally may occur following the initial dose of enalapril maleate tablets. The diuretic should, if possible, be discontinued for two to three days before beginning therapy with enalapril maleate tablets to reduce the likelihood of hypotension (see ). If the patient's blood pressure is not controlled with enalapril maleate tablets alone, diuretic therapy may be resumed. WARNINGS
If the diuretic cannot be discontinued an initial dose of 2.5 mg should be used under medical supervision for at least two hours and until blood pressure has stabilized for at least an additional hour (see and ). WARNINGSPRECAUTIONS, Drug Interactions
The recommended initial dose in patients not on diuretics is 5 mg once a day. Dosage should be adjusted according to blood pressure response. The usual dosage range is 10 to 40 mg per day administered in a single dose or two divided doses. In some patients treated once daily, the antihypertensive effect may diminish toward the end of the dosing interval. In such patients, an increase in dosage or twice daily administration should be considered. If blood pressure is not controlled with enalapril maleate tablets alone, a diuretic may be added.
Concomitant administration of enalapril maleate tablets with potassium supplements, potassium salt substitutes, or potassium-sparing diuretics may lead to increases of serum potassium (see ). PRECAUTIONS
Dosage Adjustment in Hypertensive Patients with Renal Impairment
The usual dose of enalapril is recommended for patients with a creatinine clearance >30 mL/min (serum creatinine of up to approximately 3 mg/dL). For patients with creatinine clearance ≤30 mL/min (serum creatinine ≥3 mg/dL), the first dose is 2.5 mg once daily. The dosage may be titrated upward until blood pressure is controlled or to a maximum of 40 mg daily.
* See , Anaphylactoid reactions during membrane exposure WARNINGS
Dosage on nondialysis days should be adjusted depending on the blood pressure response. †
Renal Status Creatinine- Clearance mL/min Initial Dose mg/day Normal Renal Function >80 mL/min 5 mg Mild Impairment ≤80 >30 mL/min 5 mg Moderate to Severe Impairment ≤30 mL/min 2.5 mg Dialysis Patients* - 2.5 mg on dialysis days †Heart Failure
Enalapril maleate tablets are indicated for the treatment of symptomatic heart failure, usually in combination with diuretics and digitalis. In the placebo-controlled studies that demonstrated improved survival, patients were titrated as tolerated up to 40 mg, administered in two divided doses.
The recommended initial dose is 2.5 mg. The recommended dosing range is 2.5 to 20 mg given twice a day. Doses should be titrated upward, as tolerated, over a period of a few days or weeks. The maximum daily dose administered in clinical trials was 40 mg in divided doses.
After the initial dose of enalapril maleate tablets, the patient should be observed under medical supervision for at least two hours and until blood pressure has stabilized for at least an additional hour (see and ). If possible, the dose of any concomitant diuretic should be reduced which may diminish the likelihood of hypotension. The appearance of hypotension after the initial dose of enalapril maleate tablets does not preclude subsequent careful dose titration with the drug, following effective management of the hypotension. WARNINGSPRECAUTIONS, Drug Interactions
Asymptomatic Left Ventricular Dysfunction
In the trial that demonstrated efficacy, patients were started on 2.5 mg twice daily and were titrated as tolerated to the targeted daily dose of 20 mg (in divided doses).
After the initial dose of enalapril maleate tablets, the patient should be observed under medical supervision for at least two hours and until blood pressure has stabilized for at least an additional hour (see and ). If possible, the dose of any concomitant diuretic should be reduced which may diminish the likelihood of hypotension. The appearance of hypotension after the initial dose of enalapril maleate tablets does not preclude subsequent careful dose titration with the drug, following effective management of the hypotension. WARNINGSPRECAUTIONS, Drug Interactions
Dosage Adjustment in Patients with Heart Failure and Renal Impairment or Hyponatremia
In patients with heart failure who have hyponatremia (serum sodium less than 130 mEq/L) or with serum creatinine greater than 1.6 mg/dL, therapy should be initiated at 2.5 mg daily under close medical supervision (see , and ). The dose may be increased to 2.5 mg b.i.d., then 5 mg b.i.d. and higher as needed, usually at intervals of four days or more if at the time of dosage adjustment there is not excessive hypotension or significant deterioration of renal function. The maximum daily dose is 40 mg. DOSAGE AND ADMINISTRATION, Heart FailureWARNINGSPRECAUTIONS, Drug Interactions
Pediatric Hypertensive Patients
The usual recommended starting dose is 0.08 mg/kg (up to 5 mg) once daily. Dosage should be adjusted according to blood pressure response. Doses above 0.58 mg/kg (or in excess of 40 mg) have not been studied in pediatric patients (see ). CLINICAL PHARMACOLOGY, Clinical Pharmacology in Pediatric Patients
Enalapril maleate is not recommended in neonates and in pediatric patients with glomerular filtration rate <30 mL/ min/1.73 m , as no data are available. 2
Preparation of Suspension (for 200 mL of a 1.0 mg/mL suspension)
Add 50 mL of Bicitra to a polyethylene terephthalate (PET) bottle containing ten 20 mg tablets of enalapril maleate and shake for at least 2 minutes. Let concentrate stand for 60-minutes. Following the 60-minute hold time, shake the concentrate for an additional minute. Add 150 mL of Ora-Sweet SF to the concentrate in the PET bottle and shake the suspension to disperse the ingredients. ®**TM***
The suspension should be refrigerated at 2-8°C (36-46°F) and can be stored for up to 30 days. Shake the suspension before each use.
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Trihexyphenidyl Hydrochloride
Dosage should be individualized. The initial dose should be low and then increased gradually, especially in patients over 60 years of age. Whether trihexyphenidyl HCl may best be given before or after meals should be determined by the way the patient reacts. Postencephalitic patients, who are usually more prone to excessive salivation, may prefer to take it after meals and may, in addition, require small amounts of atropine which, under such circumstances, is sometimes an effective adjuvant. If trihexyphenidyl HCl tends to dry the mouth excessively, it may be better to take it before meals, unless it causes nausea. If taken after meals, the thirst sometimes induced can be allayed by mint candies, chewing gum or water.
Abrupt withdrawal of treatment for parkinsonism may result in acute exacerbation of parkinsonism symptoms; therefore, abrupt withdrawal should be avoided.
Abrupt withdrawal of treatment may result in neuroleptic malignant syndrome (NMS) see (). WARNINGS
Idiopathic Parkinsonism
As initial therapy for parkinsonism, 1 mg of trihexyphenidyl HCl in tablet form may be administered the first day. The dose may then be increased by 2 mg increments at intervals of three to five days, until a total of 6 to 10 mg is given daily. The total daily dose will depend upon what is found to be the optimal level. Many patients derive maximum benefit from this daily total of 6 to 10 mg, but some patients, chiefly those in the postencephalitic group, may require a total daily dose of 12 to 15 mg.
Drug-Induced Parkinsonism
The size and frequency of the trihexyphenidyl HCl dose needed to control extrapyramidal reactions to commonly employed tranquilizers, notably the phenothiazines, thioxanthenes, and butyrophenones, must be determined empirically. The total daily dosage usually ranges between 5 and 15 mg although, in some cases, these reactions have been satisfactorily controlled with as little as 1 mg daily. It may be advisable to commence therapy with a single 1 mg dose. If the extrapyramidal manifestations are not controlled in a few hours, the subsequent doses may be progressively increased until satisfactory control is achieved. Satisfactory control may sometimes be more rapidly achieved by temporarily reducing the dosage of the tranquilizer when instituting trihexyphenidyl HCl therapy and then adjusting the dosage of both drugs until the desired ataractic effect is retained without onset of extrapyramidal reactions.
It is sometimes possible to maintain the patient on a reduced trihexyphenidyl HCl dosage after the reactions have remained under control for several days. Instances have been reported in which these reactions have remained in remission for long periods after trihexyphenidyl HCl therapy was discontinued.
Concomitant Use with Levodopa
When trihexyphenidyl HCl is used concomitantly with levodopa, the usual dose of each may need to be reduced. Careful adjustment is necessary, depending on side effects and degree of symptom control. An trihexyphenidyl HCl dosage of 3 to 6 mg daily, in divided doses, is usually adequate.
Concomitant Use with Other Parasympathetic Inhibitors
Trihexyphenidyl HCl may be substituted, in whole or in part, for other parasympathetic inhibitors. The usual technique is partial substitution initially, with progressive reduction in the other medication as the dose of trihexyphenidyl HCl is increased.
.
Trihexyphenidyl HCl tablets - The total daily intake of trihexyphenidyl HCl tablets is tolerated best if divided into 3 doses and taken at mealtimes. High doses (>10 mg daily) may be divided into 4 parts, with 3 doses administered at mealtimes and the fourth at bedtime.
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Novolin N
How should I take Novolin N? ®
Only use Novolin N if it appears cloudy or milky. There may be air bubbles. This is normal. If the precipitate (the white deposit at the bottom of the vial) has become lumpy or granular in appearance or has formed a deposit of solid particles on the wall of the vial, do not use it, and call Novo Nordisk at 1-800-727-6500. This insulin should not be used if the liquid in the vial remains clear after the vial has been gently rotated. ®
Novolin N comes in: ®
• 10 mL vials (small bottles) for use with syringe -
Amlodipine Besylate
2.1. Adults
The usual initial antihypertensive oral dose of amlodipine besylate tablets is 5 mg once daily with a maximum dose of 10 mg once daily.
Small, fragile, or elderly patients, or patients with hepatic insufficiency may be started on 2.5 mg once daily and this dose may be used when adding amlodipine besylate tablets to other antihypertensive therapy.
Adjust dosage according to each patient’s need. In general, titration should proceed over 7 to 14 days so that the physician can fully assess the patient’s response to each dose level. Titration may proceed more rapidly, however, if clinically warranted, provided the patient is assessed frequently.
The recommended dose for chronic stable or vasospastic angina is 5 to10 mg, with the lower dose suggested in the elderly and in patients with hepatic insufficiency. Most patients will require 10 mg for adequate effect . [seeAdverse Reactions(6)]
The recommended dose range for patients with coronary artery disease is 5 to10 mg once daily. In clinical studies, the majority of patients required 10 mg . [seeClinical Studies(14.4)]
2.2. Children
The effective antihypertensive oral dose in pediatric patients ages 6 to 17 years is 2.5 mg to 5 mg once daily. Doses in excess of 5 mg daily have not been studied in pediatric patients . [seeClinical Pharmacology(12.4),Clinical Studies(14.1)]
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Novolog
2.1 Dosing
NovoLog is an insulin analog with an earlier onset of action than regular human insulin. The dosage of NovoLog must be individualized. NovoLog given by subcutaneous injection should generally be used in regimens with an intermediate or long-acting insulin [ ]. The total daily insulin requirement may vary and is usually between 0.5 to 1.0 units/kg/day. When used in a meal-related subcutaneous injection treatment regimen, 50 to 70% of total insulin requirements may be provided by NovoLog and the remainder provided by an intermediate-acting or long-acting insulin. Because of NovoLog’s comparatively rapid onset and short duration of glucose lowering activity, some patients may require more basal insulin and more total insulin to prevent pre-meal hyperglycemia when using NovoLog than when using human regular insulin. see Warnings and Precautions (5),How Supplied/Storage and Handling (16.2)
Do not use NovoLog that is viscous (thickened) or cloudy; use only if it is clear and colorless. NovoLog should not be used after the printed expiration date.
2.2 Subcutaneous Injection
NovoLog should be administered by subcutaneous injection in the abdominal region, buttocks, thigh, or upper arm. Because NovoLog has a more rapid onset and a shorter duration of activity than human regular insulin, it should be injected immediately (within 5-10 minutes) before a meal. Injection sites should be rotated within the same region to reduce the risk of lipodystrophy. As with all insulins, the duration of action of NovoLog will vary according to the dose, injection site, blood flow, temperature, and level of physical activity.
NovoLog may be diluted with Insulin Diluting Medium for NovoLog for subcutaneous injection. Diluting one part NovoLog to nine parts diluent will yield a concentration one-tenth that of NovoLog (equivalent to U-10). Diluting one part NovoLog to one part diluent will yield a concentration one-half that of NovoLog (equivalent to U-50).
2.3 Continuous Subcutaneous Insulin Infusion (CSII) by External Pump
NovoLog can also be infused subcutaneously by an external insulin pump [see ]. Diluted insulin should not be used in external insulin pumps. Because NovoLog has a more rapid onset and a shorter duration of activity than human regular insulin, pre-meal boluses of NovoLog should be infused immediately (within 5-10 minutes) before a meal. Infusion sites should be rotated within the same region to reduce the risk of lipodystrophy. The initial programming of the external insulin infusion pump should be based on the total daily insulin dose of the previous regimen. Although there is significant interpatient variability, approximately 50% of the total dose is usually given as meal-related boluses of NovoLog and the remainder is given as a basal infusion. , Warnings and Precautions (5.8,5.9)How Supplied/Storage and Handling (16.2)Change the NovoLog in the reservoir at least every 6 days, change the infusion sets and the infusion set insertion site at least every 3 days.
The following insulin pumps† have been used in NovoLog clinical or in vitro studies conducted by Novo Nordisk, the manufacturer of NovoLog:
• Medtronic Paradigm® 512 and 712 • MiniMed 508 • Disetronic® D-TRON® and H-TRON®Before using a different insulin pump with NovoLog, read the pump label to make sure the pump has been evaluated with NovoLog.
2.4 Intravenous Use
NovoLog can be administered intravenously under medical supervision for glycemic control with close monitoring of blood glucose and potassium levels to avoid hypoglycemia and hypokalemia [ ]. For intravenous use, NovoLog should be used at concentrations from 0.05 U/mL to 1.0 U/mL insulin aspart in infusion systems using polypropylene infusion bags. NovoLog has been shown to be stable in infusion fluids such as 0.9% sodium chloride. see , Warnings and Precautions (5)How Supplied/Storage and Handling (16.2)
Inspect NovoLog for particulate matter and discoloration prior to parenteral administration.
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Lantus
2.1 Dosing
LANTUS is a recombinant human insulin analog for once daily subcutaneous administration with potency that is approximately the same as the potency of human insulin. LANTUS exhibits a relatively constant glucose-lowering profile over 24 hours that permits once-daily dosing.
LANTUS may be administered at any time during the day. LANTUS should be administered subcutaneously once a day at the same time every day. The dose of LANTUS must be individualized based on clinical response. Blood glucose monitoring is essential in all patients receiving insulin therapy.
Patients adjusting the amount or timing of dosing with LANTUS, should only do so under medical supervision with appropriate glucose monitoring .] [see Warnings and Precautions (5.1)
In patients with type 1 diabetes, LANTUS must be used in regimens with short-acting insulin.
The intended duration of activity of LANTUS is dependent on injection into subcutaneous tissue . LANTUS should not be administered intravenously or via an insulin pump. Intravenous administration of the usual subcutaneous dose could result in severe hypoglycemia . [see ] Clinical pharmacology (12.2)[see ] Warnings and Precautions (5.3)
As with all insulins, injection sites should be rotated within the same region (abdomen, thigh, or deltoid) from one injection to the next to reduce the risk of lipodystrophy [See ]. Adverse Reactions (6.1)
In clinical studies, there was no clinically relevant difference in insulin glargine absorption after abdominal, deltoid, or thigh subcutaneous administration. As for all insulins, the rate of absorption, and consequently the onset and duration of action, may be affected by exercise and other variables, such as stress, intercurrent illness, or changes in co-administered drugs or meal patterns .
2.2 Initiation of LANTUS therapy
The recommended starting dose of LANTUS in patients with type 1 diabetes should be approximately one-third of the total daily insulin requirements. Short-acting, premeal insulin should be used to satisfy the remainder of the daily insulin requirements.
The recommended starting dose of LANTUS in patients with type 2 diabetes who are not currently treated with insulin is 10 units (or 0.2 Units/kg) once daily, which should subsequently be adjusted to the patient's needs.
The dose of LANTUS should be adjusted according to blood glucose measurements. The dosage of LANTUS should be individualized under the supervision of a healthcare provider in accordance with the needs of the patient.
2.3 Converting to LANTUS from other insulin therapies
If changing from a treatment regimen with an intermediate-or long-acting insulin to a regimen with LANTUS, the amount and timing of shorter-acting insulins and doses of any oral anti-diabetic drugs may need to be adjusted.
If transferring patients from once-daily NPH insulin to once-daily LANTUS, the recommended initial LANTUS dose is the same as the dose of NPH that is being discontinued. If transferring patients from twice-daily NPH insulin to once-daily LANTUS, the recommended initial LANTUS dose is 80% of the total NPH dose that is being discontinued. This dose reduction will lower the likelihood of hypoglycemia [ see ]. Warnings and Precautions (5.3) -
Doxepin Hydrochloride
For most patients with illness of mild to moderate severity, a starting daily dose of 75 mg is recommended. Dosage may subsequently be increased or decreased at appropriate intervals and according to individual response. The usual optimum dose range is 75 mg/day to 150 mg/day.
In more severely ill patients higher doses may be required with subsequent gradual increase to 300 mg/day if necessary. Additional therapeutic effect is rarely to be obtained by exceeding a dose of 300 mg/day.
In patients with very mild symptomatology or emotional symptoms accompanying organic disease, lower doses may suffice. Some of these patients have been controlled on doses as low as 25 to 50 mg/day.
The total daily dosage of doxepin (as the hydrochloride) may be given on a divided or once a day dosage schedule. If the once a day schedule is employed the maximum recommended dose is 150 mg/day. This dose may be given at bedtime. The 150 mg capsule strength is intended for maintenance therapy only and is not recommended for initiation of treatment.
Antianxiety effect is apparent before the antidepressant effect. Optimal antidepressant effect may not be evident for 2 to 3 weeks.
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Atenolol
Hypertension
The initial dose of atenolol is 50 mg given as one tablet a day either alone or added to diuretic therapy. The full effect of this dose will usually be seen within one to two weeks. If an optimal response is not achieved, the dosage should be increased to atenolol 100 mg given as one tablet a day. Increasing the dosage beyond 100 mg a day is unlikely to produce any further benefit.
Atenolol may be used alone or concomitantly with other antihypertensive agents including thiazide-type diuretics, hydralazine, prazosin, and alpha-methyldopa.
Angina Pectoris
The initial dose of atenolol is 50 mg given as one tablet a day. If an optimal response is not achieved within one week, the dosage should be increased to atenolol 100 mg given as one tablet a day. Some patients may require a dosage of 200 mg once a day for optimal effect.
Twenty-four hour control with once daily dosing is achieved by giving doses larger than necessary to achieve an immediate maximum effect. The maximum early effect on exercise tolerance occurs with doses of 50 to 100 mg, but at these doses the effect at 24 hours is attenuated, averaging about 50% to 75% of that observed with once a day oral doses of 200 mg.
Acute Myocardial Infarction
In patients with definite or suspected acute myocardial infarction, treatment with atenolol I.V. injection should be initiated as soon as possible after the patient’s arrival in the hospital and after eligibility is established. Such treatment should be initiated in a coronary care or similar unit immediately after the patient’s hemodynamic condition has stabilized. Treatment should begin with the intravenous administration of 5 mg atenolol over 5 minutes followed by another 5 mg intravenous injection 10 minutes later. Atenolol I.V. injection should be administered under carefully controlled conditions including monitoring of blood pressure, heart rate, and electrocardiogram. Dilutions of atenolol I.V. injection in Dextrose Injection USP, Sodium Chloride Injection USP, or Sodium Chloride and Dextrose Injection may be used. These admixtures are stable for 48 hours if they are not used immediately.
In patients who tolerate the full intravenous dose (10 mg), atenolol tablets 50 mg should be initiated 10 minutes after the last intravenous dose followed by another 50 mg oral dose 12 hours later. Thereafter, atenolol can be given orally either 100 mg once daily or 50 mg twice a day for a further 6 to 9 days or until discharge from the hospital. If bradycardia or hypotension requiring treatment or any other untoward effects occur, atenolol should be discontinued. (See full prescribing information prior to initiating therapy with atenolol tablets.)
Data from other beta-blocker trials suggest that if there is any question concerning the use of IV beta-blocker or clinical estimate that there is a contraindication, the IV beta-blocker may be eliminated and patients fulfilling the safety criteria may be given atenolol tablets 50 mg twice daily or 100 mg once a day for at least seven days (if the IV dosing is excluded).
Although the demonstration of efficacy of atenolol is based entirely on data from the first seven postinfarction days, data from other beta-blocker trials suggest that treatment with beta-blockers that are effective in the postinfarction setting may be continued for one to three years if there are no contraindications.
Atenolol is an additional treatment to standard coronary care unit therapy.
Elderly Patients or Patients with Renal Impairment
Atenolol is excreted by the kidneys; consequently dosage should be adjusted in cases of severe impairment of renal function. In general, dose selection for an elderly patient should be cautious, usually starting at the low end of the dosing range, reflecting greater frequency of decreased hepatic, renal, or cardiac function, and of concomitant disease or other drug therapy. Evaluation of patients with hypertension or myocardial infarction should always include assessment of renal function. Atenolol excretion would be expected to decrease with advancing age.
No significant accumulation of atenolol occurs until creatinine clearance falls below 35 mL/min/1.73 m .Accumulation of atenolol and prolongation of its half-life were studied in subjects with creatinine clearance between 5 and 105 mL/min. Peak plasma levels were significantly increased in subjects with creatinine clearances below 30 mL/min. 2
The following maximum oral dosages are recommended for elderly, renally-impaired patients and for patients with renal impairment due to other causes:
Creatinine Clearance (mL/min/1.73 m ) 2 Atenolol Elimination Half-Life (h) Maximum Dosage 15 to 35 16 to 27 50 mg daily < 15 > 27 25 mg dailySome renally-impaired or elderly patients being treated for hypertension may require a lower starting dose of atenolol: 25 mg given as one tablet a day. If this 25 mg dose is used, assessment of efficacy must be made carefully. This should include measurement of blood pressure just prior to the next dose ("trough" blood pressure) to ensure that the treatment effect is present for a full 24 hours.
Although a similar dosage reduction may be considered for elderly and/or renally-impaired patients being treated for indications other than hypertension, data are not available for these patient populations.
Patients on hemodialysis should be given 25 mg or 50 mg after each dialysis; this should be done under hospital supervision as marked falls in blood pressure can occur.
Cessation of Therapy in Patients with Angina Pectoris
If withdrawal of atenolol therapy is planned, it should be achieved gradually and patients should be carefully observed and advised to limit physical activity to a minimum.
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Intuniv
2.1 General Instruction for Use
Do not administer with high fat meals, due to increased exposure. Swallow tablets whole. Do not crush, chew, or break tablets because this will increase the rate of guanfacine release.
2.2 Dose Selection
INTUNIV should be taken once daily, either in the morning or evening, at approximately same time each day. Begin at a dose of 1 mg/day, and adjust in increments of no more than 1 mg/week. Maintain the dose within the range of 1 mg to 4 mg once daily, depending on clinical response and tolerability, for both monotherapy and adjunctive therapy to a psychostimulant. Doses above 4 mg/day have not been systematically studied in controlled clinical studies . [ ] see Clinical Studies (14.1)
Clinically relevant improvements were observed beginning at doses in the range 0.05-0.08 mg/kg once daily in both mono- and adjunctive therapy. Efficacy increased with increasing weight-adjusted dose (mg/kg). If well tolerated, doses up to 0.12 mg/kg once daily may provide additional benefit.
In clinical trials, there were dose-related and exposure-related risks for several clinically significant adverse reactions (hypotension, bradycardia, sedative events). Thus, consideration should be given to dosing INTUNIV on a mg/kg basis, in order to balance the exposure-related potential benefits and risks of treatment. ®
2.3 Switching from Immediate-Release Guanfacine to INTUNIV
If switching from immediate-release guanfacine, discontinue that treatment, and titrate with INTUNIV following above recommended schedule. ®
Do not substitute for immediate-release guanfacine tablets on a milligram-per-milligram basis, because of differing pharmacokinetic profiles. INTUNIV has a delayed T , reduced C and lower bioavailability compared to those of the same dose of immediate-release guanfacine . ®maxmax[ ] see Clinical Pharmacology (12.3)
2.4 Maintenance Treatment
It is generally agreed that pharmacological treatment of ADHD may be needed for an extended period. The effectiveness of INTUNIV for longer-term use (more than 9 weeks) has not been systematically evaluated in controlled trials. Therefore the physician electing to use INTUNIV for extended periods should periodically re-evaluate the long-term usefulness of the drug for the individual patient. ®®
2.5 Discontinuation
Infrequent, transient elevations in blood pressure above original baseline (i.e., rebound) have been reported to occur upon abrupt discontinuation of guanfacine. To minimize these effects, the dose should generally be tapered in decrements of no more than 1 mg every 3 to 7 days.
2.6 Missed Doses
When reinitiating patients to the previous maintenance dose after two or more missed consecutive doses, physicians should consider titration based on patient tolerability.
2.7 Dose Adjustment with Concomitant Use of Strong CYP3A4 Inhibitors or Inducers
Dosage adjustments for INTUNIV are recommended with concomitant use of strong CYP3A4 inhibitors (e.g., boceprevir, clarithromycin, conivaptan, grapefruit juice, indinavir, itraconazole, ketoconazole, lopinavir/ritonavir, mibefradil, nefazodone, nelfinavir, posaconazole, ritonavir, saquinavir, telaprevir, telithromycin, and voriconazole), or CYP3A4 inducers (e.g., avasimibe, carbamazepine, phenytoin, rifampin, and St.John’s wort) (Table 1) . ®[] see Drug Interactions (7)
Table 1: Dose Adjustments in Patients Taking Concomitant CYP3A4 Inhibitors or Inducers
Comedications ScenariosInitiate INTUNIV when taking comedications ®
Continue INTUNIV when adding a comedication ® Stop a comedication when continuing INTUNIV ® Strong CYP3A4 Inhibitors INTUNIV dose should be limited to 2 mg/day ® INTUNIV dose should be decreased by half. ® INTUNIV dose should be doubled based on patient tolerability. The maximum dose should not exceed 4 mg/day ® Strong CYP3A4 Inducers INTUNIV dose may be titrated up to 8 mg/day. Consider faster titration (e.g. in increments of 2 mg/week) ® Consider increase INTUNIV dose gradually in 1-2 weeks to 2 fold of the original dose based on patient tolerability. ® INTUNIV dose should be decreased by half in 1-2 weeks based on patient tolerability. The maximum dose should not exceed 4 mg/day ® -
Olanzapine
2.4 Olanzapine for Injection: Agitation Associated with Schizophrenia and Bipolar I Mania
Dose Selection for Agitated Adult Patients with Schizophrenia and Bipolar I Mania
The efficacy of intramuscular olanzapine for injection in controlling agitation in these disorders was demonstrated in a dose range of 2.5 mg to 10 mg. The recommended dose in these patients is 10 mg. A lower dose of 5 or 7.5 mg may be considered when clinical factors warrant . If agitation warranting additional intramuscular doses persists following the initial dose, subsequent doses up to 10 mg may be given. However, the efficacy of repeated doses of intramuscular olanzapine for injection in agitated patients has not been systematically evaluated in controlled clinical trials. Also, the safety of total daily doses greater than 30 mg, or 10 mg injections given more frequently than 2 hours after the initial dose, and 4 hours after the second dose have not been evaluated in clinical trials. Maximal dosing of intramuscular olanzapine (e.g., 3 doses of 10 mg administered 2 to 4 hours apart) may be associated with a substantial occurrence of significant orthostatic hypotension Thus, it is recommended that patients requiring subsequent intramuscular injections be assessed for orthostatic hypotension prior to the administration of any subsequent doses of intramuscular olanzapine for injection. The administration of an additional dose to a patient with a clinically significant postural change in systolic blood pressure is not recommended. [see CLINICAL STUDIES ( ) 14.3][see WARNINGS AND PRECAUTIONS ( ) 5.8].
If ongoing olanzapine therapy is clinically indicated, oral olanzapine may be initiated in a range of 5 to 20 mg/day as soon as clinically appropriate .
Intramuscular Dosing in Special Populations
A dose of 5 mg/injection should be considered for geriatric patients or when other clinical factors warrant. A lower dose of 2.5 mg/injection should be considered for patients who otherwise might be debilitated, be predisposed to hypotensive reactions, or be more pharmacodynamically sensitive to olanzapine AND . [see WARNINGS AND PRECAUTIONS ( ), DRUG INTERACTIONS ( ), 5.147CLINICAL PHARMACOLOGY ( ) 12.3]
Administration of Olanzapine for Injection
Olanzapine for Injection is intended for intramuscular use only. Do not administer intravenously or subcutaneously. Inject slowly, deep into the muscle mass.
Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration, whenever solution and container permit.
Directions for Preparation of Olanzapine for Injection with Sterile Water for Injection
Dissolve the contents of the vial using 2.1 mL of Sterile Water for Injection to provide a solution containing approximately 5 mg/mL of olanzapine. The resulting solution should appear clear and yellow. Olanzapine for Injection reconstituted with Sterile Water for Injection should be used immediately (within 1 hour) after reconstitution. Discard any unused portion.
The following table provides injection volumes for delivering various doses of intramuscular olanzapine for injection reconstituted with Sterile Water for Injection.
Dose, mg Olanzapine Volume of Injection, mL 10 Withdraw total contents of vial 7.5 1.5 5 1 2.5 0.5Physical Incompatibility Information
Olanzapine for Injection should be reconstituted only with Sterile Water for Injection. Olanzapine for Injection should not be combined in a syringe with diazepam injection because precipitation occurs when these products are mixed. Lorazepam injection should not be used to reconstitute Olanzapine for Injection as this combination results in a delayed reconstitution time. Olanzapine for Injection should not be combined in a syringe with haloperidol injection because the resulting low pH has been shown to degrade olanzapine over time.
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Novolin 7030
How should I take Novolin 70/30? ®
Only use Novolin 70/30 if it appears cloudy or milky. There may be air bubbles. This is normal. If the precipitate (the white deposit at the bottom of the vial) has become lumpy or granular in appearance or has formed a deposit of solid particles on the wall of the vial, do not use it, and call Novo Nordisk at 1-800-727-6500. This insulin should not be used if the liquid in the vial remains clear after the vial has been gently rotated. ®
Novolin 70/30 comes in: ®
• 10 mL vials (small bottles) for use with syringe -
Glucagon Kit
General Instructions for Use:
The diluent is provided for use only in the preparation of glucagon for parenteral injection and for no other use. Glucagon should not be used at concentrations greater than 1 mg/mL (1 unit/mL). Reconstituted glucagon should be used immediately. Discard any unused portion. Reconstituted glucagon solutions should be used only if they are clear and of a water-like consistency. Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration.Directions for Treatment of Severe Hypoglycemia:
Severe hypoglycemia should be treated initially with intravenous glucose, if possible.
If parenteral glucose can not be used, dissolve the lyophilized glucagon using the accompanying diluting solution and use immediately. For adults and for pediatric patients weighing more than 44 lb (20 kg), give 1 mg (1 unit) by subcutaneous, intramuscular, or intravenous injection. For pediatric patients weighing less than 44 lb (20 kg), give 0.5 mg (0.5 unit) or a dose equivalent to 20 to 30 μg/kg. 2-6 Discard any unused portion. An unconscious patient will usually awaken within 15 minutes following the glucagon injection. If the response is delayed, there is no contraindication to the administration of an additional dose of glucagon; however, in view of the deleterious effects of cerebral hypoglycemia emergency aid should be sought so that parenteral glucose can be given. After the patient responds, supplemental carbohydrate should be given to restore liver glycogen and to prevent secondary hypoglycemia.Directions for Use as a Diagnostic Aid:
Dissolve the lyophilized glucagon using the accompanying diluting solution and use immediately. Discard any unused portion.
The doses in the following table may be administered for relaxation of the stomach, duodenum, and small bowel, depending on the onset and duration of effect required for the examination. Since the stomach is less sensitive to the effect of glucagon, 0.5 mg (0.5 units) IV or 2 mg (2 units) IM are recommended.
* Administration of 2 mg (2 units) doses produces a higher incidence of nausea and vomiting than do lower doses.
Dose Route of Administration Time of Onset of Action Approximate Duration of Effect 0.25-0.5 mg (0.25-0.5 units) IV 1 minute 9-17 minutes 1-mg (1 unit) IM 8-10 minutes 12-27 minutes 2 mg* (2 units) IV 1 minute 22-25 minutes 2 mg* (2 units) IM 4-7 minutes 21-32 minutesFor examination of the colon, it is recommended that a 2 mg (2 units) dose be administered intramuscularly approximately 10 minutes prior to the procedure. Colon relaxation and reduction of patient discomfort may allow the radiologist to perform a more satisfactory examination.
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Lorazepam
Lorazepam must never be used without individualization of dosage particularly when used with other medications capable of producing central-nervous-system depression.
EQUIPMENT NECESSARY TO MAINTAIN A PATENT AIRWAY SHOULD BE IMMEDIATELY AVAILABLE PRIOR TO INTRAVENOUS ADMINISTRATION OF LORAZEPAM (see ). WARNINGS
Status Epilepticus
GENERAL ADVICE
Status epilepticus is a potentially life-threatening condition associated with a high risk of permanent neurological impairment, if inadequately treated. The treatment of status, however, requires far more than the administration of an anticonvulsant agent. It involves observation and management of all parameters critical to maintaining vital function and the capacity to provide support of those functions as required. Ventilatory support must be readily available. The use of benzodiazepines, like Lorazepam Injection, is ordinarily only an initial step of a complex and sustained intervention which may require additional interventions, (e.g., concomitant intravenous administration of phenytoin). Because status epilepticus may result from a correctable acute cause such as hypoglycemia, hyponatremia, or other metabolic or toxic derangement, such an abnormality must be immediately sought and corrected. Furthermore, patients who are susceptible to further seizure episodes should receive adequate maintenance antiepileptic therapy.
Any health care professional who intends to treat a patient with status epilepticus should be familiar with this package insert and the pertinent medical literature concerning current concepts for the treatment of status epilepticus. A comprehensive review of the considerations critical to the informed and prudent management of status epilepticus cannot be provided in drug product labeling. The archival medical literature contains many informative references on the management of status epilepticus, among them the report of the working group on status epilepticus of the Epilepsy Foundation of America “Treatment of Convulsive Status Epilepticus” (JAMA 1993; 270:854-859). As noted in the report just cited, it may be useful to consult with a neurologist if a patient fails to respond (e.g., fails to regain consciousness).
INTRAVENOUS INJECTION
For the treatment of status epilepticus, the usual recommended dose of Lorazepam Injection is 4 mg given slowly (2 mg/min) for patients 18 years and older. If seizures cease, no additional Lorazepam Injection is required. If seizures continue or recur after a 10- to 15-minute observation period, an additional 4 mg intravenous dose may be slowly administered. The usual precautions in treating status epilepticus should be employed. An intravenous infusion should be started, vital signs should be monitored, an unobstructed airway should be maintained, and artificial ventilation equipment should be available. Experience with further doses of lorazepam is very limited.
INTRAMUSCULAR INJECTION
IM lorazepam is not preferred in the treatment of status epilepticus because therapeutic lorazepam levels may not be reached as quickly as with IV administration. However, when an intravenous port is not available, the IM route may prove useful (see ). CLINICAL PHARMACOLOGY, Pharmacokinetics and Metabolism
PEDIATRIC
The safety of lorazepam in pediatric patients has not been established.
Preanesthetic
INTRAMUSCULAR INJECTION
For the designated indications as a premedicant, the usual recommended dose of lorazepam for intramuscular injection is 0.05 mg/kg up to a maximum of 4 mg. As with all premedicant drugs, the dose should be individualized (see also , , , and ). Doses of other central-nervous-system-depressant drugs ordinarily should be reduced (see ). Narcotic analgesics should be administered at their usual preoperative time. CLINICAL PHARMACOLOGYWARNINGSPRECAUTIONSADVERSE REACTIONSPRECAUTIONSFor optimum effect, measured as lack of recall, intramuscular lorazepam should be administered at least 2 hours before the anticipated operative procedure.
There are insufficient data to support efficacy or make dosage recommendations for intramuscular lorazepam in patients less than 18 years of age; therefore, such use is not recommended.
INTRAVENOUS INJECTION
For the primary purpose of sedation and relief of anxiety, the usual recommended initial dose of lorazepam for intravenous injection is 2 mg total, or 0.02 mg/lb (0.044 mg/kg), whichever is smaller. This dose will suffice for sedating most adult patients and ordinarily should not be exceeded in patients over 50 years of age. In those patients in whom a greater likelihood of lack of recall for perioperative events would be beneficial, larger doses as high as 0.05 mg/kg up to a total of 4 mg may be administered (see also , , , and ). Doses of other injectable central-nervous-system-depressant drugs ordinarily should be reduced (see ). CLINICAL PHARMACOLOGYWARNINGSPRECAUTIONSADVERSE REACTIONSPRECAUTIONSFor optimum effect, measured as lack of recall, intravenous lorazepam should be administered 15 to 20 minutes before the anticipated operative procedure.
There are insufficient data to support efficacy or make dosage recommendations for intravenous lorazepam in patients less than 18 years of age; therefore, such use is not recommended.
Dose Administration in Special Populations
ELDERLY PATIENTS AND PATIENTS WITH HEPATIC DISEASE
No dosage adjustments are needed in elderly patients and in patients with hepatic disease.
PATIENTS WITH RENAL DISEASE
For acute dose administration, adjustment is not needed for patients with renal disease. However, in patients with renal disease, caution should be exercised if frequent doses are given over relatively short periods of time (see also ). CLINICAL PHARMACOLOGY
DOSE ADJUSTMENT DUE TO DRUG INTERACTIONS
The dose of lorazepam should be reduced by 50% when coadministered with probenecid or valproate (see ). PRECAUTIONS, Drug Interactions
It may be necessary to increase the dose of lorazepam in female patients who are concomitantly taking oral contraceptives.
Administration
When given intramuscularly, Lorazepam Injection, undiluted, should be injected deep in the muscle mass.
Injectable lorazepam can be used with atropine sulfate, narcotic analgesics, other parenterally used analgesics, commonly used anesthetics, and muscle relaxants.
Immediately prior to intravenous use, Lorazepam Injection must be diluted with an equal volume of compatible solution. Contents should be mixed thoroughly by gently inverting the container repeatedly until a homogenous solution results. Do not shake vigorously, as this will result in air entrapment. When properly diluted, the drug may be injected directly into a vein or into the tubing of an existing intravenous infusion. The rate of injection should not exceed 2.0 mg per minute.
Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration, whenever solution and container permit. Do not use if solution is discolored or contains a precipitate.
Lorazepam Injection is compatible for dilution purposes with the following solutions: Sterile Water for Injection, USP; Sodium Chloride Injection, USP; 5% Dextrose Injection, USP.
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2.1 Schizophrenia
Adults
Dose Selection— Oral olanzapine should be administered on a once-a-day schedule without regard to meals, generally beginning with 5 to 10 mg initially, with a target dose of 10 mg/day within several days. Further dosage adjustments, if indicated, should 4 generally occur at intervals of not less than 1 week, since steady state for olanzapine would not be achieved for approximately 1 week in the typical patient. When dosage adjustments are necessary, dose increments/decrements of 5 mg QD are recommended.
Efficacy in schizophrenia was demonstrated in a dose range of 10 to 15 mg/day in clinical trials. However, doses above 10 mg/day were not demonstrated to be more efficacious than the 10 mg/day dose. An increase to a dose greater than the target dose of 10 mg/day (i.e., to a dose of 15 mg/day or greater) is recommended only after clinical assessment. Olanzapine is not indicated for use in doses above 20 mg/day.
Dosing in Special Populations — The recommended starting dose is 5 mg in patients who are debilitated, who have a predisposition to hypotensive reactions, who otherwise exhibit a combination of factors that may result in slower metabolism of olanzapine (e.g., nonsmoking female patients ≥65 years of age), or who may be more pharmacodynamically sensitive to olanzapine [see ]. When indicated, dose escalation should be performed with caution in these patients. Warnings and Precautions (5.14), Drug Interactions (7), and Clinical Pharmacology (12.3)
Maintenance Treatment —The effectiveness of oral olanzapine, 10 mg/day to 20 mg/day, in maintaining treatment response in schizophrenic patients who had been stable on olanzapine for approximately 8 weeks and were then followed for relapse has been demonstrated in a placebo-controlled trial [see ]. The physician who elects to use olanzapine for extended periods should periodically reevaluate the long-term usefulness of the drug for the individual patient. Clinical Studies (14.1)
Adolescents
Dose Selection — Oral olanzapine should be administered on a once-a-day schedule without regard to meals with a recommended starting dose of 2.5 or 5 mg, with a target dose of 10 mg/day. Efficacy in adolescents with schizophrenia was demonstrated based on a flexible dose range of 2.5 to 20 mg/day in clinical trials, with a mean modal dose of 12.5 mg/day (mean dose of 11.1 mg/day). When dosage adjustments are necessary, dose increments/decrements of 2.5 or 5 mg are recommended.
The safety and effectiveness of doses above 20 mg/day have not been evaluated in clinical trials [see ]. Clinical Studies ( ) 14.1
Maintenance Treatment — The efficacy of olanzapine for the maintenance treatment of schizophrenia in the adolescent population has not been systematically evaluated; however, maintenance efficacy can be extrapolated from adult data along with comparisons of olanzapine pharmacokinetic parameters in adult and adolescent patients. Thus, it is generally recommended that responding patients be continued beyond the acute response, but at the lowest dose needed to maintain remission. Patients should be periodically reassessed to determine the need for maintenance treatment.
2.2 Bipolar I Disorder (Manic or Mixed Episodes)
Adults
Dose Selection for Monotherapy — Oral olanzapine should be administered on a once-a-day schedule without regard to meals, generally beginning with 10 or 15 mg. Dosage adjustments, if indicated, should generally occur at intervals of not less than 24 hours, reflecting the procedures in the placebo-controlled trials. When dosage adjustments are necessary, dose increments/decrements of 5 mg QD are recommended.
Short-term (3-4 weeks) antimanic efficacy was demonstrated in a dose range of 5 mg to 20 mg/day in clinical trials. The safety of doses above 20 mg/day has not been evaluated in clinical trials [see ]. Clinical Studies (14.2)
Maintenance Monotherapy — The benefit of maintaining bipolar I patients on monotherapy with oral olanzapine at a dose of 5 to 20 mg/day, after achieving a responder status for an average duration of 2 weeks, was demonstrated in a controlled trial [see ]. The physician who elects to use olanzapine for extended periods should periodically reevaluate the long-term usefulness of the drug for the individual patient. Clinical Studies (14.2)
Dose Selection for Adjunctive Treatment — When administered as adjunctive treatment to lithium or valproate, oral olanzapine dosing should generally begin with 10 mg once-a-day without regard to meals.
Antimanic efficacy was demonstrated in a dose range of 5 mg to 20 mg/day in clinical trials [see ]. The safety of doses above 20 mg/day has not been evaluated in clinical trials. Clinical Studies (14.2)
Adolescents
Dose Selection— Oral olanzapine should be administered on a once-a-day schedule without regard to meals with a recommended starting dose of 2.5 or 5 mg, with a target dose of 10 mg/day. Efficacy in adolescents with bipolar I disorder (manic or mixed episodes) was demonstrated based on a flexible dose range of 2.5 to 20 mg/day in clinical trials, with a mean modal dose of 10.7 mg/day (mean dose of 8.9 mg/day). When dosage adjustments are necessary, dose increments/decrements of 2.5 or 5 mg are recommended.
The safety and effectiveness of doses above 20 mg/day have not been evaluated in clinical trials [see ]. Clinical Studies ( ) 14.2
Maintenance Treatment— The efficacy of olanzapine for the maintenance treatment of bipolar I disorder in the adolescent population has not been evaluated; however, maintenance efficacy can be extrapolated from adult data along with comparisons of olanzapine pharmacokinetic parameters in adult and adolescent patients. Thus, it is generally recommended that responding patients be continued beyond the acute response, but at the lowest dose needed to maintain remission. Patients should be periodically reassessed to determine the need for maintenance treatment.
2.3 Administration of Olanzapine Orally Disintegrating Tablets
After opening sachet, peel back foil on blister. Do not push tablet through foil. Immediately upon opening the blister, using dry hands, remove tablet and place entire olanzapine orally disintegrating tablet in the mouth. Tablet disintegration occurs rapidly in saliva so it can be easily swallowed with or without liquid.
2.5 Olanzapine and Fluoxetine in Combination: Depressive Episodes Associated with Bipolar I Disorder
When using olanzapine and fluoxetine in combination, also refer to the Clinical Studies section of the package insert for Symbyax.
Adults
Oral olanzapine should be administered in combination with fluoxetine once daily in the evening, without regard to meals, generally beginning with 5 mg of oral olanzapine and 20 mg of fluoxetine. Dosage adjustments, if indicated, can be made according to efficacy and tolerability within dose ranges of oral olanzapine 5 to 12.5 mg and fluoxetine 20 to 50 mg. Antidepressant efficacy was demonstrated with olanzapine and fluoxetine in combination in adult patients with a dose range of olanzapine 6 to 12 mg and fluoxetine 25 to 50 mg. Safety of co-administration of doses above 18 mg olanzapine with 75 mg fluoxetine has not been evaluated in clinical studies.
Safety and efficacy of olanzapine and fluoxetine in combination was determined in clinical trials supporting approval of Symbyax (fixed dose combination of olanzapine and fluoxetine). Symbyax is dosed between 3 mg/25 mg (olanzapine/fluoxetine) per day and 12 mg/50 mg (olanzapine/fluoxetine) per day. The following table demonstrates the appropriate individual component doses of olanzapine and fluoxetine versus Symbyax. Dosage adjustments, if indicated, should be made with the individual components according to efficacy and tolerability.
Table 1: Approximate Dose Correspondence Between Symbyax and the Combination of Olanzapine and Fluoxetine a
Symbyax (olanzapine/fluoxetine HCl) is a fixed-dose combination of olanzapine and fluoxetine. a
While there is no body of evidence to answer the question of how long a patient treated with olanzapine and fluoxetine in combination should remain on it, it is generally accepted that bipolar I disorder, including the depressive episodes associated with bipolar I disorder, is a chronic illness requiring chronic treatment. The physician should periodically reexamine the need for continued pharmacotherapy.
Olanzapine monotherapy is not indicated for the treatment of depressive episodes associated with bipolar I disorder.
2.7 Olanzapine and Fluoxetine in Combination: Dosing in Special Populations
The starting dose of oral olanzapine 2.5-5 mg with fluoxetine 20 mg should be used for patients with a predisposition to hypotensive reactions, patients with hepatic impairment, or patients who exhibit a combination of factors that may slow the metabolism of olanzapine or fluoxetine in combination (female gender, geriatric age, nonsmoking status), or those patients who may be pharmacodynamically sensitive to olanzapine. Dosing modification may be necessary in patients who exhibit a combination of factors that may slow metabolism. When indicated, dose escalation should be performed with caution in these patients. Olanzapine and fluoxetine in combination have not been systematically studied in patients over 65 years of age see and [Warnings and Precautions Drug Interactions , (5.14),(7)Clinical Pharmacology ( )]. 12.3
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