Wyeth Pharmaceuticals Inc., A Subsidiary Of Pfizer Inc.
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Wyeth Pharmaceuticals Inc., A Subsidiary Of Pfizer Inc. Drugs
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Furosemide
ZOSYN should be administered by intravenous infusion over 30 minutes.
2.1 Adult Patients
The usual total daily dose of ZOSYN for adults is 3.375 g every six hours totaling 13.5 g (12.0 g piperacillin/1.5 g tazobactam). The usual duration of ZOSYN treatment is from 7 to 10 days.
ZOSYN should be administered by intravenous infusion over 30 minutes.
2.2 Nosocomial Pneumonia
Initial presumptive treatment of patients with nosocomial pneumonia should start with ZOSYN at a dosage of 4.5 g every six hours plus an aminoglycoside, totaling 18.0 g (16.0 g piperacillin/2.0 g tazobactam). The recommended duration of ZOSYN treatment for nosocomial pneumonia is 7 to 14 days. Treatment with the aminoglycoside should be continued in patients from whom P. aeruginosa is isolated.
2.3 Renal Impairment
In patients with renal impairment (creatinine clearance ≤ 40 mL/min) and dialysis patients (hemodialysis and CAPD), the intravenous dose of ZOSYN should be reduced to the degree of actual renal function impairment. The recommended daily doses of ZOSYN for patients with renal impairment are as follows:
Table 1: Recommended Dosing of ZOSYN in Patients with Normal Renal Function and Renal - Impairment (As total grams piperacillin/tazobactam) Renal Function (creatinine clearance, mL/min) All Indications (except nosocomial pneumonia) Nosocomial Pneumonia * Creatinine clearance for patients not receiving hemodialysis † 0.75 g (0.67 g piperacillin/0.08 g tazobactam) should be administered following each hemodialysis session on hemodialysis days >40 mL/min 3.375 q 6 h 4.5 q 6 h 20–40 mL/min* 2.25 q 6 h 3.375 q 6 h <20 mL/min* 2.25 q 8 h 2.25 q 6 h Hemodialysis† 2.25 q 12 h 2.25 q 8 h CAPD 2.25 q 12 h 2.25 q 8 hFor patients on hemodialysis, the maximum dose is 2.25 g every twelve hours for all indications other than nosocomial pneumonia and 2.25 g every eight hours for nosocomial pneumonia. Since hemodialysis removes 30% to 40% of the administered dose, an additional dose of 0.75 g ZOSYN (0.67 g piperacillin/0.08 g tazobactam) should be administered following each dialysis period on hemodialysis days. No additional dosage of ZOSYN is necessary for CAPD patients.
2.4 Pediatric Patients
For children with appendicitis and/or peritonitis 9 months of age or older, weighing up to 40 kg, and with normal renal function, the recommended ZOSYN dosage is 100 mg piperacillin/12.5 mg tazobactam per kilogram of body weight, every 8 hours. For pediatric patients between 2 months and 9 months of age, the recommended ZOSYN dosage based on pharmacokinetic modeling, is 80 mg piperacillin/10 mg tazobactam per kilogram of body weight, every 8 hours [see Use in Specific Populations (8.4) and Clinical Pharmacology (12.3)]. Pediatric patients weighing over 40 kg and with normal renal function should receive the adult dose.
It has not been determined how to adjust ZOSYN dosage in pediatric patients with renal impairment.
2.5 Reconstitution and Dilution of Powder Formulations
Single dose vials
Reconstitute ZOSYN vials with a compatible reconstitution diluent from the list provided below.
2.25 g, 3.375 g, and 4.5 g ZOSYN should be reconstituted with 10 mL, 15 mL, and 20 mL, respectively. Swirl until dissolved.
Compatible Reconstitution Diluents for Single Dose Vials
0.9% sodium chloride for injection Sterile water for injection Dextrose 5% Bacteriostatic saline/parabens Bacteriostatic water/parabens Bacteriostatic saline/benzyl alcohol Bacteriostatic water/benzyl alcohol
Reconstituted ZOSYN solutions for single dose vials should be further diluted (recommended volume per dose of 50 mL to 150 mL) in a compatible intravenous solution listed below. Administer by infusion over a period of at least 30 minutes. During the infusion it is desirable to discontinue the primary infusion solution.
Compatible Intravenous Solutions for Single Dose Vials
0.9% sodium chloride for injection sterile water for injection1 Dextran 6% in saline Dextrose 5% Lactated Ringer's Solution (compatible only with reformulated ZOSYN containing EDTA and is compatible for co-administration via a Y-site)
ZOSYN should not be mixed with other drugs in a syringe or infusion bottle since compatibility has not been established.
ZOSYN is not chemically stable in solutions that contain only sodium bicarbonate and solutions that significantly alter the pH.
ZOSYN should not be added to blood products or albumin hydrolysates. Parenteral drug products should be inspected visually for particulate matter or discoloration prior to administration, whenever solution and container permit.
1 Maximum recommended volume per dose of sterile water for injection is 50 mL.Stability of ZOSYN Powder Formulations Following Reconstitution
ZOSYN reconstituted from single vials is stable in glass and plastic containers (plastic syringes, I.V. bags and tubing) when used with compatible diluents. Discard unused portions after storage for 24 hours at room temperature or after storage for 48 hours at refrigerated temperature (2°C to 8°C [36°F to 46°F]).
Single dose vial should be used immediately after reconstitution. Discard any unused portion after 24 hours if stored at room temperature (20°C to 25°C [68°F to 77°F]), or after 48 hours if stored at refrigerated temperature (2°C to 8°C [36°F to 46°F]). Vials should not be frozen after reconstitution.
Stability studies in the I.V. bags have demonstrated chemical stability (potency, pH of reconstituted solution and clarity of solution) for up to 24 hours at room temperature and up to one week at refrigerated temperature. ZOSYN contains no preservatives. Appropriate consideration of aseptic technique should be used.
ZOSYN reconstituted from single vials can be used in ambulatory intravenous infusion pumps. Stability of ZOSYN in an ambulatory intravenous infusion pump has been demonstrated for a period of 12 hours at room temperature. Each dose was reconstituted and diluted to a volume of 37.5 mL or 25 mL. One-day supplies of dosing solution were aseptically transferred into the medication reservoir (I.V. bags or cartridge). The reservoir was fitted to a preprogrammed ambulatory intravenous infusion pump per the manufacturer's instructions. Stability of ZOSYN is not affected when administered using an ambulatory intravenous infusion pump.
2.6 Compatibility with Aminoglycosides
Due to the in vitro inactivation of aminoglycosides by piperacillin, ZOSYN and aminoglycosides are recommended for separate administration. ZOSYN and aminoglycosides should be reconstituted, diluted, and administered separately when concomitant therapy with aminoglycosides is indicated [see Drug Interactions (7.1)].
In circumstances where co-administration via Y-site is necessary, ZOSYN formulations containing EDTA are compatible for simultaneous co-administration via Y-site infusion only with the following aminoglycosides under the following conditions:
Table 2: Compatibility with Aminoglycosides Aminoglycoside ZOSYN Dose (grams) ZOSYN Diluent Volume * (mL) Aminoglycoside Concentration Range † (mg/mL) Acceptable Diluents * Diluent volumes apply only to single vials † The concentration ranges in Table 2 are based on administration of the aminoglycoside in divided doses (10–15 mg/kg/day in two daily doses for amikacin and 3–5 mg/kg/day in three daily doses for gentamicin). Administration of amikacin or gentamicin in a single daily dose or in doses exceeding those stated above via Y-site with ZOSYN containing EDTA has not been evaluated. See package insert for each aminoglycoside for complete Dosage and Administration instructions. Amikacin 2.253.3754.5 50100150 1.75 – 7.5 0.9% sodium chloride or 5% dextrose Gentamicin 2.253.3754.5 50100150 0.7 – 3.32 0.9% sodium chloride or 5% dextroseOnly the concentration and diluents for amikacin or gentamicin with the dosages of ZOSYN listed above have been established as compatible for co-administration via Y-site infusion. Simultaneous co-administration via Y-site infusion in any manner other than listed above may result in inactivation of the aminoglycoside by ZOSYN.
ZOSYN is not compatible with tobramycin for simultaneous co-administration via Y-site infusion. Compatibility of ZOSYN with other aminoglycosides has not been established.
Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration, whenever solution and container permit.
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Bio Res Q
Parenteral drug products should be inspected visually for particulate matter and discoloration prior to and during administration whenever solution and container permit.
Parenteral routes of administration other than intravenous are not recommended.
PROTONIX I.V. for Injection may be administered intravenously through a dedicated line or through a Y-site. The intravenous line should be flushed before and after administration of PROTONIX I.V. for Injection with either 5% Dextrose Injection, USP, 0.9% Sodium Chloride Injection, USP, or Lactated Ringer's Injection, USP. When administered through a Y-site, PROTONIX I.V. for Injection is compatible with the following solutions: 5% Dextrose Injection, USP, 0.9% Sodium Chloride Injection, USP, or Lactated Ringer's Injection, USP.
Midazolam HCl has been shown to be incompatible with Y-site administration of PROTONIX I.V. for Injection. PROTONIX I.V. for Injection may not be compatible with products containing zinc. When PROTONIX I.V. for Injection is administered through a Y-site, immediately stop use if precipitation or discoloration occurs.
2.1 Gastroesophageal Reflux Disease Associated With a History of Erosive Esophagitis
Recommended Dosage
The recommended adult dose is 40 mg pantoprazole given once daily by intravenous infusion for 7 to 10 days.
Treatment with PROTONIX® I.V. (pantoprazole sodium) for Injection should be discontinued as soon as the patient is able to receive treatment with PROTONIX Delayed-Release Tablets or Oral Suspension.
Administration and Preparation Instructions
Data on the safe and effective dosing for conditions other than those described [see Indications and Usage (1)] such as life-threatening upper gastrointestinal bleeds, are not available. PROTONIX I.V. 40 mg once daily does not raise gastric pH to levels sufficient to contribute to the treatment of such life-threatening conditions.
Fifteen Minute Infusion
PROTONIX I.V. for Injection should be reconstituted with 10 mL of 0.9% Sodium Chloride Injection, USP, and further diluted (admixed) with 100 mL of 5% Dextrose Injection, USP, 0.9% Sodium Chloride Injection, USP, or Lactated Ringer's Injection, USP, to a final concentration of approximately 0.4 mg/mL. The reconstituted solution may be stored for up to 6 hours at room temperature prior to further dilution. The admixed solution may be stored at room temperature and must be used within 24 hours from the time of initial reconstitution. Both the reconstituted solution and the admixed solution do not need to be protected from light.
PROTONIX I.V. for Injection admixtures should be administered intravenously over a period of approximately 15 minutes at a rate of approximately 7 mL/min.
Two Minute Infusion
PROTONIX I.V. for Injection should be reconstituted with 10 mL of 0.9% Sodium Chloride Injection, USP, to a final concentration of approximately 4 mg/mL. The reconstituted solution may be stored for up to 24 hours at room temperature prior to intravenous infusion and does not need to be protected from light. PROTONIX I.V. for Injection should be administered intravenously over a period of at least 2 minutes.
2.2 Pathological Hypersecretion Including Zollinger-Ellison Syndrome
Recommended Dosage
The dosage of PROTONIX I.V. for Injection in patients with pathological hypersecretory conditions including Zollinger-Ellison Syndrome varies with individual patients. The recommended adult dosage is 80 mg intravenously every 12 hours. The frequency of dosing can be adjusted to individual patient needs based on acid output measurements. In those patients who need a higher dosage, 80 mg intravenously every 8 hours is expected to maintain acid output below 10 mEq/h. Daily doses higher than 240 mg or administered for more than 6 days have not been studied [see Clinical Studies (14)]. Transition from oral to intravenous and from intravenous to oral formulations of gastric acid inhibitors should be performed in such a manner to ensure continuity of effect of suppression of acid secretion. Patients with Zollinger-Ellison Syndrome may be vulnerable to serious clinical complications of increased acid production even after a short period of loss of effective inhibition.
Administration and Preparation Instructions
Fifteen Minute Infusion
Each vial of PROTONIX I.V. for Injection should be reconstituted with 10 mL of 0.9% Sodium Chloride Injection, USP. The contents of the two vials should be combined and further diluted (admixed) with 80 mL of 5% Dextrose Injection, USP, 0.9% Sodium Chloride Injection, USP, or Lactated Ringer's Injection, USP, to a total volume of 100 mL with a final concentration of approximately 0.8 mg/mL. The reconstituted solution may be stored for up to 6 hours at room temperature prior to further dilution. The admixed solution may be stored at room temperature and must be used within 24 hours from the time of initial reconstitution. Both the reconstituted solution and the admixed solution do not need to be protected from light.
PROTONIX I.V. for Injection should be administered intravenously over a period of approximately 15 minutes at a rate of approximately 7 mL/min.
Two minute Infusion
PROTONIX I.V. for Injection should be reconstituted with 10 mL of 0.9% Sodium Chloride Injection, USP, per vial to a final concentration of approximately 4 mg/mL. The reconstituted solution may be stored for up to 24 hours at room temperature prior to intravenous infusion and does not need to be protected from light. The total volume from both vials should be administered intravenously over a period of at least 2 minutes.
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Premarin
Generally, when estrogen therapy is prescribed for a postmenopausal woman with a uterus, a progestin should be considered to reduce the risk of endometrial cancer [see Boxed Warning].
A woman without a uterus does not need progestin. In some cases, however, hysterectomized women with a history of endometriosis may need a progestin [see Warnings and Precautions (5.2, 5.16)].
Use of estrogen-alone, or in combination with a progestin, should be with the lowest effective dose and for the shortest duration consistent with treatment goals and risks for the individual woman. Postmenopausal women should be re-evaluated periodically as clinically appropriate to determine if treatment is still necessary.
PREMARIN may be taken without regard to meals.
2.1 Treatment of Moderate to Severe Vasomotor Symptoms due to Menopause
Patients should be treated with the lowest effective dose. Generally, women should be started at 0.3 mg PREMARIN daily. Subsequent dosage adjustment may be made based upon the individual patient response. This dose should be periodically reassessed by the healthcare provider.
PREMARIN therapy may be given continuously, with no interruption in therapy, or in cyclical regimens (regimens such as 25 days on drug followed by 5 days off drug), as is medically appropriate on an individual basis.
2.2 Treatment of Moderate to Severe Symptoms of Vulvar and Vaginal Atrophy due to Menopause
Patients should be treated with the lowest effective dose. Generally, women should be started at 0.3 mg PREMARIN daily. Subsequent dosage adjustment may be made based upon the individual patient response. This dose should be periodically reassessed by the healthcare provider.
PREMARIN therapy may be given continuously, with no interruption in therapy, or in cyclical regimens (regimens such as 25 days on drug followed by 5 days off drug), as is medically appropriate on an individual basis.
2.3 Treatment of Hypoestrogenism due to Hypogonadism, Castration, or Primary Ovarian Failure
PREMARIN therapy should be initiated and maintained with the lowest effective dose to achieve clinical goals. Female hypogonadism: 0.3 mg or 0.625 mg daily, administered cyclically (e.g., three weeks on and one week off). Doses are adjusted depending on the severity of symptoms and responsiveness of the endometrium [see Clinical Studies (14.4)].
Female castration or primary ovarian failure: 1.25 mg daily, cyclically. Adjust dosage, upward or downward, according to severity of symptoms and response of the patient. For maintenance, adjust dosage to lowest level that will provide effective control.
2.4 Treatment of Breast Cancer (for Palliation Only) in Appropriately Selected Women and Men with Metastatic Disease
Suggested dosage is 10 mg three times daily, for a period of at least three months.
2.5 Treatment of Advanced Androgen-Dependent Carcinoma of the Prostate (for Palliation Only)
1.25 mg to 2 × 1.25 mg three times daily. The effectiveness of therapy can be judged by phosphatase determinations as well as by symptomatic improvement of the patient.
2.6 Prevention of Postmenopausal Osteoporosis
PREMARIN therapy may be given continuously, with no interruption in therapy, or in cyclical regimens (regimens such as 25 days on drug followed by 5 days off drug), as is medically appropriate on an individual basis.
Patients should be treated with the lowest effective dose. Generally, women should be started at 0.3 mg PREMARIN daily. Subsequent dosage adjustment may be made based upon the individual clinical and bone mineral density responses. This dose should be periodically reassessed by the healthcare provider.
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Zosyn In Galaxy Containers
ZOSYN should be administered by intravenous infusion over 30 minutes.
The usual daily dose of ZOSYN for adults is 3.375 g every six hours totaling 13.5 g (12.0 g piperacillin/1.5 g tazobactam).
Nosocomial Pneumonia
Initial presumptive treatment of patients with nosocomial pneumonia should start with ZOSYN at a dosage of 4.5 g every six hours plus an aminoglycoside, totaling 18.0 g (16.0 g piperacillin/2.0 g tazobactam). Treatment with the aminoglycoside should be continued in patients from whom Pseudomonas aeruginosa is isolated. If Pseudomonas aeruginosa is not isolated, the aminoglycoside may be discontinued at the discretion of the treating physician.
Due to the in vitro inactivation of the aminoglycoside by beta-lactam antibiotics, ZOSYN and the aminoglycoside are recommended for separate administration. ZOSYN and the aminoglycoside should be reconstituted, diluted, and administered separately when concomitant therapy with aminoglycosides is indicated. (See PRECAUTIONS, Drug Interactions.)
In circumstances where coadministration via Y-site is necessary, reformulated ZOSYN containing EDTA supplied in Galaxy containers is compatible for simultaneous coadministration via Y-site infusion only with the following aminoglycosides under the following conditions:
The following compatibility information does not apply to the ZOSYN (piperacillin/tazobactam) formulation not containing EDTA. This information does not apply to ZOSYN in vials or bulk pharmacy containers. Refer to the package insert for ZOSYN vials or bulk pharmacy containers for instructions.
TABLE 5 Aminoglycoside ZOSYN Dose(grams) Aminoglycoside Concentration Range*(mg/mL) AcceptableDiluents Amikacin 2.25, 3.375, 4.5 1.75 – 7.5 0.9% Sodium Chloride or 5% Dextrose Gentamicin 2.25, 3.375, 4.5 0.7 – 3.32 0.9% Sodium Chloride or 5% Dextrose *The concentration ranges in Table 5 are based on administration of the aminoglycoside in divided doses (10-15 mg/kg/day in two daily doses for amikacin and 3-5 mg/kg/day in three daily doses for gentamicin). Administration of amikacin or gentamicin in a single daily dose or in doses exceeding those stated above via Y-site with ZOSYN containing EDTA has not been evaluated. See package insert for each aminoglycoside for complete Dosage and Administration instructions.ZOSYN is not compatible with tobramycin for simultaneous coadministration via Y-site infusion. Compatibility of ZOSYN with other aminoglycosides has not been established. Only the concentration and diluents for amikacin or gentamicin with the dosages of ZOSYN listed above have been established as compatible for coadministration via Y-site infusion. Simultaneous coadministration via Y-site infusion in any manner other than listed above may result in inactivation of the aminoglycoside by ZOSYN.
Renal Insufficiency
In patients with renal insufficiency (Creatinine Clearance ≤ 40 mL/min), the intravenous dose of ZOSYN should be adjusted to the degree of actual renal function impairment. In patients with nosocomial pneumonia receiving concomitant aminoglycoside therapy, the aminoglycoside dosage should be adjusted according to the recommendations of the manufacturer. The recommended daily doses of ZOSYN for patients with renal insufficiency are as follows:
Recommended Dosing of ZOSYN in Patients with Normal Renal Function and Renal Insufficiency (As total grams piperacillin/tazobactam) Renal Function (Creatinine Clearance,mL/min) All Indications (except nosocomial pneumonia) Nosocomial Pneumonia >40 mL/min 3.375 q 6 h 4.5 q 6 h 20-40 mL/min* 2.25 q 6 h 3.375 q 6 h <20 mL/min* 2.25 q 8 h 2.25 q 6 h Hemodialysis** 2.25 q 12 h 2.25 q 8 h CAPD 2.25 q 12 h 2.25 q 8 h * Creatinine clearance for patients not receiving hemodialysis** 0.75 g should be administered following each hemodialysis session on hemodialysis daysFor patients on hemodialysis, the maximum dose is 2.25 g every twelve hours for all indications other than nosocomial pneumonia and 2.25 g every eight hours for nosocomial pneumonia. Since hemodialysis removes 30% to 40% of the administered dose, an additional dose of 0.75 g ZOSYN should be administered following each dialysis period on hemodialysis days. No additional dosage of ZOSYN is necessary for CAPD patients.
Duration of Therapy
The usual duration of ZOSYN treatment is from seven to ten days. However, the recommended duration of ZOSYN treatment of nosocomial pneumonia is 7 to 14 days. In all conditions, the duration of therapy should be guided by the severity of the infection and the patient's clinical and bacteriological progress.
Pediatric Patients
For children with appendicitis and/or peritonitis 9 months of age or older, weighing up to 40 kg, and with normal renal function, the recommended ZOSYN dosage is 100 mg piperacillin/12.5 mg tazobactam per kilogram of body weight, every 8 hours. For pediatric patients between 2 months and 9 months of age, the recommended ZOSYN dosage based on pharmacokinetic modeling, is 80 mg piperacillin/10 mg tazobactam per kilogram of body weight, every 8 hours (see PRECAUTIONS, General, Pediatric Use and CLINICAL PHARMACOLOGY). Pediatric patients weighing over 40 kg and with normal renal function should receive the adult dose. There are no dosage recommendations for ZOSYN in pediatric patients with impaired renal function.
ZOSYN in Galaxy containers should not be used in pediatric patients who require less than the full adult dose of ZOSYN in order to prevent unintentional overdose. The other available formulations of ZOSYN can be used in this population.
DIRECTIONS FOR USE OF ZOSYN (PIPERACILLIN AND TAZOBACTAM INJECTION) IN GALAXY CONTAINERS (PL 2040 PLASTIC)
ZOSYN Injection (PL 2040 Plastic) is to be administered using sterile equipment after thawing to room temperature.
Zosyn containg EDTA is compatible for co-administration via a Y-site intravenous tube with Lactated Ringer's injection, USP.
Administer by infusion over a period of at least 30 minutes. During the infusion it is desirable to discontinue the primary infusion solution.
ZOSYN should not be mixed with other drugs in a syringe or infusion bottle since compatibility has not been established.
ZOSYN is not chemically stable in solutions that contain only sodium bicarbonate and solutions that significantly alter the pH.
ZOSYN should not be added to blood products or albumin hydrolysates.
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Premarin
For treatment of abnormal uterine bleeding due to hormonal imbalance in the absence of organic pathology:
One 25 mg injection, intravenously or intramuscularly. Intravenous use is preferred since more rapid response can be expected from this mode of administration. Repeat in 6 to 12 hours if necessary. The use of Premarin Intravenous for injection does not preclude the advisability of other appropriate measures.
One should adhere to the usual precautionary measures governing intravenous administration. Injection should be made SLOWLY to obviate the occurrence of flushes.
Infusion of Premarin Intravenous for injection with other agents is not generally recommended. In emergencies, however, when an infusion has already been started it may be expedient to make the injection into the tubing just distal to the infusion needle. If so used, compatibility of solutions must be considered.
COMPATIBILITY OF SOLUTIONS
Premarin Intravenous is compatible with normal saline, dextrose, and invert sugar solutions. It is not compatible with protein hydrolysate, ascorbic acid, or any solution with an acid pH.
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Premarin Vaginal
Generally, when estrogen is prescribed for a postmenopausal woman with a uterus, a progestin should also be considered to reduce the risk of endometrial cancer.
A woman without a uterus does not need a progestin. In some cases, however, hysterectomized women with a history of endometriosis may need a progestin [see Warnings and Precautions (5.3, 5.15)].
Use of estrogen-alone, or in combination with a progestin, should be with the lowest effective dose and for the shortest duration consistent with treatment goals and risks for the individual woman. Postmenopausal women should be re-evaluated periodically as clinically appropriate to determine if treatment is still necessary.
2. 1 Treatment of Atrophic Vaginitis and Kraurosis Vulvae
PREMARIN Vaginal Cream is administered intravaginally in a cyclic regimen (daily for 21 days and then off for 7 days). Generally, women should be started at the 0.5 g dosage strength. Dosage adjustments (0.5 to 2 g) may be made based on individual response [see Dosage Forms and Strengths (3)].
2. 2 Treatment of Moderate to Severe Dyspareunia, a Symptom of Vulvar and Vaginal Atrophy, due to Menopause
PREMARIN Vaginal Cream (0.5 g) is administered intravaginally in a twice-weekly (for example, Monday and Thursday) continuous regimen or in a cyclic regimen of 21 days of therapy followed by 7 days off of therapy [see Dosage Forms and Strengths (3)].
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Nicotine Transdermal System
In the treatment of tuberculosis, a major cause of the emergence of drug-resistant organisms, and thus treatment failure, is patient nonadherence to prescribed treatment. Treatment failure and drug-resistant organisms can be life-threatening and may result in other serious health risks. It is, therefore, important that patients adhere to the drug regimen for the full duration of treatment. Directly observed therapy is recommended when patients are receiving treatment for tuberculosis. Consultation with an expert in the treatment of drug-resistant tuberculosis is advised for patients in whom drug-resistant tuberculosis is suspected or likely. Ethionamide should be administered with at least one, sometimes two, other drugs to which the organism is known to be susceptible (see INDICATIONS AND USAGE).
Trecator is administered orally. The usual adult dose is 15 to 20 mg/kg/day, administered once daily or, if patient exhibits poor gastrointestinal tolerance, in divided doses, with a maximum daily dosage of 1 gram.
Trecator tablets have been reformulated from a sugar-coated tablet to a film-coated tablet. Patients should be monitored and have their dosage retitrated when switching from the sugar-coated tablet to the film-coated tablet (see CLINICAL PHARMACOLOGY).
Therapy should be initiated at a dose of 250 mg daily, with gradual titration to optimal doses as tolerated by the patient. A regimen of 250 mg daily for 1 or 2 days, followed by 250 mg twice daily for 1 or 2 days with a subsequent increase to 1 gm in 3 or 4 divided doses has been reported.4,5 Thus far, there is insufficient evidence to indicate the lowest effective dosage levels. Therefore, in order to minimize the risk of resistance developing to the drug or to the companion drug, the principle of giving the highest tolerated dose (based on gastrointestinal intolerance) has been followed. In the adult this would seem to be between 0.5 and 1.0 gm daily, with an average of 0.75 gm daily.
The optimum dosage for pediatric patients has not been established. However, pediatric dosages of 10 to 20 mg/kg p.o. daily in 2 or 3 divided doses given after meals or 15 mg/kg/24 hrs as a single daily dose have been recommended.1,2 As with adults, ethionamide may be administered to pediatric patients once daily. It should be noted that in patients with concomitant tuberculosis and HIV infection, malabsorption syndrome may be present. Drug malabsorption should be suspected in patients who adhere to therapy, but who fail to respond appropriately. In such cases, consideration should be given to therapeutic drug monitoring (see CLINICAL PHARMACOLOGY).
The best times of administration are those which the individual patient finds most suitable in order to avoid or minimize gastrointestinal intolerance, which is usually at mealtimes. Every effort should be made to encourage patients to persevere with treatment when gastrointestinal side effects appear, since they may diminish in severity as treatment proceeds.
Concomitant administration of pyridoxine is recommended.
Duration of treatment should be based on individual clinical response. In general, continue therapy until bacteriological conversion has become permanent and maximal clinical improvement has occurred.
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Zosyn Pharmacy Bulk Package
ZOSYN should be administered by intravenous infusion over 30 minutes.
The usual daily dose of ZOSYN for adults is 3.375 g every six hours totaling 13.5 g (12.0 g piperacillin/1.5 g tazobactam).
Nosocomial Pneumonia
Initial presumptive treatment of patients with nosocomial pneumonia should start with ZOSYN at a dosage of 4.5 g every six hours plus an aminoglycoside, totaling 18.0 g (16.0 g piperacillin/2.0 g tazobactam). Treatment with the aminoglycoside should be continued in patients from whom Pseudomonas aeruginosa is isolated. If Pseudomonas aeruginosa is not isolated, the aminoglycoside may be discontinued at the discretion of the treating physician.
Due to the in vitro inactivation of the aminoglycoside by beta-lactam antibiotics, ZOSYN and the aminoglycoside are recommended for separate administration. ZOSYN and the aminoglycoside should be reconstituted, diluted, and administered separately when concomitant therapy with aminoglycosides is indicated. (See PRECAUTIONS, Drug Interactions.)
In circumstances where co-administration via Y-site is necessary, reformulated ZOSYN containing EDTA supplied in vials or bulk pharmacy containers is compatible for simultaneous coadministration via Y-site infusion only with the following aminoglycosides under the following conditions:
The following compatibility information does not apply to the ZOSYN (piperacillin/tazobactam) formulation not containing EDTA. This information does not apply to ZOSYN in Galaxy® containers. Refer to the package insert for ZOSYN Galaxy containers for instructions.
TABLE 4 Aminoglycoside ZOSYN Dose(grams) ZOSYN Diluent Volume(mL) Aminoglycoside Concentration Range* (mg/mL) Acceptable Diluents * The concentration ranges in Table 4 are based on administration of the aminoglycoside in divided doses (10–15 mg/kg/day in two daily doses for amikacin and 3–5 mg/kg/day in three daily doses for gentamicin). Administration of amikacin or gentamicin in a single daily dose or in doses exceeding those stated above via Y-site with ZOSYN containing EDTA has not been evaluated. See package insert for each aminoglycoside for complete Dosage and Administration instructions. Amikacin 2.25, 3.375, 4.5 50, 100, 150 1.75 – 7.5 0.9% Sodium Chloride or 5% Dextrose Gentamicin 2.25, 3.375, 4.5 50, 100, 150 0.7 – 3.32 0.9% Sodium Chloride or 5% DextroseZOSYN is not compatible with tobramycin for simultaneous coadministration via Y-site infusion. Compatibility of ZOSYN with other aminoglycosides has not been established. Only the concentration and diluents for amikacin or gentamicin with the dosages of ZOSYN listed above have been established as compatible for coadministration via Y-site infusion. Simultaneous coadministration via Y-site infusion in any manner other than listed above may result in inactivation of the aminoglycoside by ZOSYN.
Renal Insufficiency
In patients with renal insufficiency (Creatinine Clearance ≤ 40 mL/min), the intravenous dose of ZOSYN (piperacillin and tazobactam for injection, USP) should be adjusted to the degree of actual renal function impairment. In patients with nosocomial pneumonia receiving concomitant aminoglycoside therapy, the aminoglycoside dosage should be adjusted according to the recommendations of the manufacturer. The recommended daily doses of ZOSYN for patients with renal insufficiency are as follows:
Recommended Dosing of ZOSYN in Patients with Normal Renal Function and Renal Insufficiency (As total grams piperacillin/tazobactam) Renal Function(Creatinine Clearance, mL/min) All Indications (except nosocomial pneumonia) Nosocomial Pneumonia * Creatinine clearance for patients not receiving hemodialysis † 0.75 g should be administered following each hemodialysis session on hemodialysis days >40 mL/min 3.375 q 6 h 4.5 q 6 h 20–40 mL/min* 2.25 q 6 h 3.375 q 6 h <20 mL/min* 2.25 q 8 h 2.25 q 6 h Hemodialysis† 2.25 q 12 h 2.25 q 8 h CAPD 2.25 q 12 h 2.25 q 8 hFor patients on hemodialysis, the maximum dose is 2.25 g every twelve hours for all indications other than nosocomial pneumonia and 2.25 g every eight hours for nosocomial pneumonia. Since hemodialysis removes 30% to 40% of the administered dose, an additional dose of 0.75 g ZOSYN should be administered following each dialysis period on hemodialysis days. No additional dosage of ZOSYN is necessary for CAPD patients.
Duration of Therapy
The usual duration of ZOSYN treatment is from seven to ten days. However, the recommended duration of ZOSYN treatment of nosocomial pneumonia is 7 to 14 days. In all conditions, the duration of therapy should be guided by the severity of the infection and the patient's clinical and bacteriological progress.
Pediatric Patients
For children with appendicitis and/or peritonitis 9 months of age or older, weighing up to 40 kg, and with normal renal function, the recommended ZOSYN dosage is 100 mg piperacillin/12.5 mg tazobactam per kilogram of body weight, every 8 hours. For pediatric patients between 2 months and 9 months of age, the recommended ZOSYN dosage based on pharmacokinetic modeling, is 80 mg piperacillin/10 mg tazobactam per kilogram of body weight, every 8 hours (see PRECAUTIONS, General, Pediatric Use and CLINICAL PHARMACOLOGY). Pediatric patients weighing over 40 kg and with normal renal function should receive the adult dose. There are no dosage recommendations for ZOSYN in pediatric patients with impaired renal function.
Directions for Reconstitution and Dilution for Use
Intravenous Administration
Pharmacy Bulk PackageNot for Direct InfusionRECONSTITUTED STOCK SOLUTION MUST BE TRANSFERRED AND FURTHER DILUTED FOR I.V. INFUSION
The pharmacy bulk vial is for use in a hospital pharmacy admixture service only under a laminar flow hood. After reconstitution, entry into the vial must be made with a sterile transfer set or other sterile dispensing device, and contents should be dispensed as aliquots into intravenous solution using aseptic technique. Use entire contents of pharmacy bulk vial promptly. Discard unused portion after 24 hours if stored at room temperature (20°C to 25°C [68°F to 77°F]), or after 48 hours if stored at refrigerated temperature (2°C to 8°C [36°F to 46°F]).
Reconstitute the pharmacy bulk vial with exactly 152 mL of a compatible reconstitution diluent, listed below, to a concentration of 200 mg/mL of piperacillin and 25 mg/mL of tazobactam. Shake well until dissolved. Parenteral drug products should be inspected visually for particulate matter and discoloration prior to and during administration whenever solution and container permit.
Compatible Reconstitution Diluents
0.9% Sodium Chloride for InjectionSterile Water for Injection2 Dextrose 5%Bacteriostatic Saline/ParabensBacteriostatic Water/ParabensBacteriostatic Saline/Benzyl AlcoholBacteriostatic Water/Benzyl Alcohol
Reconstituted ZOSYN solution should be further diluted (recommended volume per dose of 50 mL to 150 mL) in a compatible intravenous solution listed below. Administer by infusion over a period of at least 30 minutes. During the infusion it is desirable to discontinue the primary infusion solution.
2 Maximum recommended volume per dose of Sterile Water for Injection is 50 mL.Compatible Intravenous Solutions
0.9% Sodium Chloride for InjectionSterile Water for Injection2 Dextran 6% in SalineDextrose 5%Lactated Ringer's Solution (Compatible only with reformulated ZOSYN containing EDTA and is compatible for co-administration via a Y-site).
ZOSYN should not be mixed with other drugs in a syringe or infusion bottle since compatibility has not been established.
ZOSYN is not chemically stable in solutions that contain only sodium bicarbonate and solutions that significantly alter the pH.
ZOSYN should not be added to blood products or albumin hydrolysates.
ZOSYN can be used in ambulatory intravenous infusion pumps.
Stability of ZOSYN Following Reconstitution
ZOSYN is stable in glass and plastic containers (plastic syringes, I.V. bags, and tubing) when used with compatible diluents.
The pharmacy bulk vial should NOT be frozen after reconstitution. Discard unused portions after storage for 24 hours at room temperature (20°C to 25°C [68°F to 77°F]) or after storage for 48 hours at refrigerated temperature (2°C to 8°C [36°F to 46°F]).
Stability studies in the I.V. bags have demonstrated chemical stability [potency, pH of reconstituted solution, and clarity of solution] for up to 24 hours at room temperature and up to one week at refrigerated temperature. ZOSYN contains no preservatives. Appropriate consideration of aseptic technique should be used.
Stability of ZOSYN (piperacillin and tazobactam for injection, USP) in an ambulatory intravenous infusion pump has been demonstrated for a period of 12 hours at room temperature. Each dose was reconstituted and diluted to a volume of 37.5 mL or 25 mL. One-day supplies of dosing solution were aseptically transferred into the medication reservoir (I.V. bags or cartridge). The reservoir was fitted to a preprogrammed ambulatory intravenous infusion pump per the manufacturer's instructions. Stability of ZOSYN is not affected when administered using an ambulatory intravenous infusion pump.
Parenteral drug products should be inspected visually for particulate matter or discoloration prior to administration, whenever solution and container permit.
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Phospholine Iodide Ophthalmic
DIRECTIONS FOR PREPARING EYEDROPS
1. Use aseptic technique.
2. Tear off aluminum seals, and remove and discard rubber plugs from both drug and diluent containers.
3. Pour diluent into drug container.
4. Remove dropper assembly from its sterile wrapping. Holding dropper assembly by the screw cap and, WITHOUT COMPRESSING RUBBER BULB, insert into drug container and screw down tightly.
5. Shake for several seconds to ensure mixing.
6. Do not cover nor obliterate instructions to patient regarding storage of eyedrops.
Glaucoma
Selection of Therapy – The medication prescribed should be that which will control the intraocular pressure around-the-clock with the least risk of side effects or adverse reactions. "Tonometric glaucoma" (ocular hypertension without other evidence of the disease) is frequently not treated with any medication, and echothiophate iodide for ophthalmic solution is certainly not recommended for this condition. In early chronic simple glaucoma with field loss or disc changes, pilocarpine is generally used for initial therapy and can be recommended so long as control is thereby maintained over the 24 hours of the day.
When this is not the case, echothiophate iodide for ophthalmic solution 0.03% may be effective and probably has no greater potential for side effects. If this dosage is inadequate, epinephrine and a carbonic anhydrase inhibitor may be added to the regimen. When still more effective medication is required, the higher strengths of echothiophate iodide for ophthalmic solution may be prescribed with the recognition that the control of the intraocular pressure should have priority regardless of potential side effects. In secondary glaucoma following cataract surgery, the higher strengths of the drug are frequently needed and are ordinarily very well tolerated.
The dosage regimen prescribed should call for the lowest concentration that will control the intraocular pressure around-the-clock. Where tonometry around-the-clock is not feasible, it is suggested that appointments for tension-taking be made at different times of the day so that inadequate control may be more readily detected. Two doses a day are preferred to one in order to maintain as smooth a diurnal tension curve as possible, although a single dose per day or every other day has been used with satisfactory results. Because of the long duration of action of the drug, it is never necessary or desirable to exceed a schedule of twice a day. The daily dose or one of the two daily doses should always be instilled just before retiring to avoid inconvenience due to the miosis.
Early Chronic Simple Glaucoma – Echothiophate iodide for ophthalmic solution 0.03% instilled twice a day, just before retiring and in the morning, may be prescribed advantageously for cases of early chronic simple glaucoma that are not controlled around-the-clock with other less potent agents. Because of prolonged action, control during the night and early morning hours may then sometimes be obtained. A change in therapy is indicated if, at any time, the tension fails to remain at an acceptable level on this regimen.
Advanced Chronic Simple Glaucoma and Glaucoma Secondary to Cataract Surgery – These cases may respond satisfactorily to echothiophate iodide for ophthalmic solution 0.03% twice a day as above. When the patient is being transferred to echothiophate iodide for ophthalmic solution because of unsatisfactory control with pilocarpine, carbachol, epinephrine, etc., one of the higher strengths, 0.06%, 0.125%, or 0.25% will usually be needed. In this case, a brief trial with the 0.03% eyedrops will be advantageous in that the higher strengths will then be more easily tolerated.
Concomitant Therapy – Echothiophate iodide for ophthalmic solution may be used concomitantly with epinephrine, a carbonic anhydrase inhibitor, or both.
Technique – Good technique in the administration of echothiophate iodide for ophthalmic solution requires that finger pressure at the inner canthus should be exerted for a minute or two following instillation of the eyedrops, to minimize drainage into the nose and throat. Excess solution around the eye should be removed with tissue and any medication on the hands should be rinsed off.
Accommodative Esotropia (Pediatric Use)
In Diagnosis – One drop of 0.125% may be instilled once a day in both eyes on retiring, for a period of two or three weeks. If the esotropia is accommodative, a favorable response will usually be noted which may begin within a few hours.
In Treatment – Echothiophate iodide for ophthalmic solution is prescribed at the lowest concentration and frequency which gives satisfactory results. After the initial period of treatment for diagnostic purposes, the schedule may be reduced to 0.125% every other day or 0.06% every day. These dosages can often be gradually lowered as treatment progresses. The 0.03% strength has proven to be effective in some cases. The maximum usually recommended dosage is 0.125% once a day, although more intensive therapy has been used for short periods.
Technique – (See "DOSAGE AND ADMINISTRATION, Glaucoma.")
Duration of Treatment – In diagnosis, only a short period is required and little time will be lost in instituting other procedures if the esotropia proves to be unresponsive. In therapy, there is no definite limit so long as the drug is well tolerated. However, if the eyedrops, with or without eyeglasses, are gradually withdrawn after about a year or two and deviation recurs, surgery should be considered. As with other miotics, tolerance may occasionally develop after prolonged use. In such cases, a rest period will restore the original activity of the drug.
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Premphase
Use of estrogen-alone, or in combination with a progestin, should be with the lowest effective dose and for the shortest duration consistent with treatment goals and risks for the individual woman. Postmenopausal women should be re-evaluated periodically as clinically appropriate to determine if treatment is still necessary.
2.1 Treatment of Moderate to Severe Vasomotor Symptoms due to Menopause
PREMPRO therapy consists of a single tablet to be taken orally once daily.
PREMPHASE therapy consists of two separate tablets: one maroon 0.625 mg Premarin [conjugated estrogens (CE)] tablet taken daily on days 1 through 14 and one light-blue tablet containing 0.625 mg CE and 5 mg of medroxyprogesterone acetate (MPA) taken on days 15 through 28.
2.2 Treatment of Moderate to Severe Vulvar and Vaginal Atrophy due to Menopause
PREMPRO therapy consists of a single tablet to be taken orally once daily.
PREMPHASE therapy consists of two separate tablets: one maroon 0.625 mg CE tablet taken daily on days 1 through 14 and one light-blue tablet containing 0.625 mg CE and 5 mg MPA taken on days 15 through 28.
When prescribing solely for the treatment of moderate to severe vulvar and vaginal atrophy, topical vaginal products should be considered.
2.3 Prevention of Postmenopausal Osteoporosis
PREMPRO therapy consists of a single tablet to be taken orally once daily.
PREMPHASE therapy consists of two separate tablets: one maroon 0.625 mg CE tablet taken daily on days 1 through 14 and one light-blue tablet containing 0.625 mg CE and 5 mg of MPA taken on days 15 through 28.
When prescribing solely for the prevention of postmenopausal osteoporosis, therapy should only be considered for women at significant risk of osteoporosis and non-estrogen medications should be carefully considered.
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Pantoprazole Sodium Delayed-release
2.1 Recommended Dosing Schedule
Pantoprazole sodium is supplied as delayed-release tablets. The recommended dosages are outlined in Table 1.
Table 1: Recommended Dosing Schedule for Pantoprazole Sodium Delayed-Release Tablets Indication Dose Frequency * For adult patients who have not healed after 8 weeks of treatment, an additional 8-week course of pantoprazole sodium may be considered. † Controlled studies did not extend beyond 12 months. ‡ Dosage regimens should be adjusted to individual patient needs and should continue for as long as clinically indicated. Doses up to 240 mg daily have been administered. Short-Term Treatment of Erosive Esophagitis Associated With GERD Adults 40 mg Once daily for up to 8 weeks* Children (5 years and older) ≥ 15 kg to < 40 kg 20 mg Once daily for up to 8 weeks ≥ 40 kg 40 mg Maintenance of Healing of Erosive Esophagitis Adults 40 mg Once daily† Pathological Hypersecretory Conditions Including Zollinger-Ellison Syndrome Adults 40 mg Twice daily‡2.2 Administration Instructions
Directions for method of administration for each dosage form are presented in Table 2.
Table 2: Administration Instructions Formulation Route Instructions* * Patients should be cautioned that Pantoprazole Sodium Delayed-Release Tablets should not be split, chewed, or crushed. Delayed-Release Tablets Oral Swallowed whole, with or without foodPantoprazole Sodium Delayed-Release Tablets
Pantoprazole Sodium Delayed-Release Tablets should be swallowed whole, with or without food in the stomach. If patients are unable to swallow a 40 mg tablet, two 20 mg tablets may be taken. Concomitant administration of antacids does not affect the absorption of Pantoprazole Sodium Delayed-Release Tablets.
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Protonix I.v.
Parenteral drug products should be inspected visually for particulate matter and discoloration prior to and during administration whenever solution and container permit.
Parenteral routes of administration other than intravenous are not recommended.
PROTONIX I.V. for Injection may be administered intravenously through a dedicated line or through a Y-site. The intravenous line should be flushed before and after administration of PROTONIX I.V. for Injection with either 5% Dextrose Injection, USP, 0.9% Sodium Chloride Injection, USP, or Lactated Ringer's Injection, USP. When administered through a Y-site, PROTONIX I.V. for Injection is compatible with the following solutions: 5% Dextrose Injection, USP, 0.9% Sodium Chloride Injection, USP, or Lactated Ringer's Injection, USP.
Midazolam HCl has been shown to be incompatible with Y-site administration of PROTONIX I.V. for Injection. PROTONIX I.V. for Injection may not be compatible with products containing zinc. When PROTONIX I.V. for Injection is administered through a Y-site, immediately stop use if precipitation or discoloration occurs.
2.1 Gastroesophageal Reflux Disease Associated With a History of Erosive Esophagitis
Recommended Dosage
The recommended adult dose is 40 mg pantoprazole given once daily by intravenous infusion for 7 to 10 days.
Treatment with PROTONIX® I.V. (pantoprazole sodium) for Injection should be discontinued as soon as the patient is able to receive treatment with PROTONIX Delayed-Release Tablets or Oral Suspension.
Administration and Preparation Instructions
Data on the safe and effective dosing for conditions other than those described [see Indications and Usage (1)] such as life-threatening upper gastrointestinal bleeds, are not available. PROTONIX I.V. 40 mg once daily does not raise gastric pH to levels sufficient to contribute to the treatment of such life-threatening conditions.
Fifteen Minute Infusion
PROTONIX I.V. for Injection should be reconstituted with 10 mL of 0.9% Sodium Chloride Injection, USP, and further diluted (admixed) with 100 mL of 5% Dextrose Injection, USP, 0.9% Sodium Chloride Injection, USP, or Lactated Ringer's Injection, USP, to a final concentration of approximately 0.4 mg/mL. The reconstituted solution may be stored for up to 6 hours at room temperature prior to further dilution. The admixed solution may be stored at room temperature and must be used within 24 hours from the time of initial reconstitution. Both the reconstituted solution and the admixed solution do not need to be protected from light.
PROTONIX I.V. for Injection admixtures should be administered intravenously over a period of approximately 15 minutes at a rate of approximately 7 mL/min.
Two Minute Infusion
PROTONIX I.V. for Injection should be reconstituted with 10 mL of 0.9% Sodium Chloride Injection, USP, to a final concentration of approximately 4 mg/mL. The reconstituted solution may be stored for up to 24 hours at room temperature prior to intravenous infusion and does not need to be protected from light. PROTONIX I.V. for Injection should be administered intravenously over a period of at least 2 minutes.
2.2 Pathological Hypersecretion Including Zollinger-Ellison Syndrome
Recommended Dosage
The dosage of PROTONIX I.V. for Injection in patients with pathological hypersecretory conditions including Zollinger-Ellison Syndrome varies with individual patients. The recommended adult dosage is 80 mg intravenously every 12 hours. The frequency of dosing can be adjusted to individual patient needs based on acid output measurements. In those patients who need a higher dosage, 80 mg intravenously every 8 hours is expected to maintain acid output below 10 mEq/h. Daily doses higher than 240 mg or administered for more than 6 days have not been studied [see Clinical Studies (14)]. Transition from oral to intravenous and from intravenous to oral formulations of gastric acid inhibitors should be performed in such a manner to ensure continuity of effect of suppression of acid secretion. Patients with Zollinger-Ellison Syndrome may be vulnerable to serious clinical complications of increased acid production even after a short period of loss of effective inhibition.
Administration and Preparation Instructions
Fifteen Minute Infusion
Each vial of PROTONIX I.V. for Injection should be reconstituted with 10 mL of 0.9% Sodium Chloride Injection, USP. The contents of the two vials should be combined and further diluted (admixed) with 80 mL of 5% Dextrose Injection, USP, 0.9% Sodium Chloride Injection, USP, or Lactated Ringer's Injection, USP, to a total volume of 100 mL with a final concentration of approximately 0.8 mg/mL. The reconstituted solution may be stored for up to 6 hours at room temperature prior to further dilution. The admixed solution may be stored at room temperature and must be used within 24 hours from the time of initial reconstitution. Both the reconstituted solution and the admixed solution do not need to be protected from light.
PROTONIX I.V. for Injection should be administered intravenously over a period of approximately 15 minutes at a rate of approximately 7 mL/min.
Two minute Infusion
PROTONIX I.V. for Injection should be reconstituted with 10 mL of 0.9% Sodium Chloride Injection, USP, per vial to a final concentration of approximately 4 mg/mL. The reconstituted solution may be stored for up to 24 hours at room temperature prior to intravenous infusion and does not need to be protected from light. The total volume from both vials should be administered intravenously over a period of at least 2 minutes.
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Protonix I.v.
Parenteral drug products should be inspected visually for particulate matter and discoloration prior to and during administration whenever solution and container permit.
Parenteral routes of administration other than intravenous are not recommended.
PROTONIX I.V. for Injection may be administered intravenously through a dedicated line or through a Y-site. The intravenous line should be flushed before and after administration of PROTONIX I.V. for Injection with either 5% Dextrose Injection, USP, 0.9% Sodium Chloride Injection, USP, or Lactated Ringer's Injection, USP. When administered through a Y-site, PROTONIX I.V. for Injection is compatible with the following solutions: 5% Dextrose Injection, USP, 0.9% Sodium Chloride Injection, USP, or Lactated Ringer's Injection, USP.
Midazolam HCl has been shown to be incompatible with Y-site administration of PROTONIX I.V. for Injection. PROTONIX I.V. for Injection may not be compatible with products containing zinc. When PROTONIX I.V. for Injection is administered through a Y-site, immediately stop use if precipitation or discoloration occurs.
2.1 Gastroesophageal Reflux Disease Associated With a History of Erosive Esophagitis
Recommended Dosage
The recommended adult dose is 40 mg pantoprazole given once daily by intravenous infusion for 7 to 10 days.
Treatment with PROTONIX® I.V. (pantoprazole sodium) for Injection should be discontinued as soon as the patient is able to receive treatment with PROTONIX Delayed-Release Tablets or Oral Suspension.
Administration and Preparation Instructions
Data on the safe and effective dosing for conditions other than those described [see Indications and Usage (1)] such as life-threatening upper gastrointestinal bleeds, are not available. PROTONIX I.V. 40 mg once daily does not raise gastric pH to levels sufficient to contribute to the treatment of such life-threatening conditions.
Fifteen Minute Infusion
PROTONIX I.V. for Injection should be reconstituted with 10 mL of 0.9% Sodium Chloride Injection, USP, and further diluted (admixed) with 100 mL of 5% Dextrose Injection, USP, 0.9% Sodium Chloride Injection, USP, or Lactated Ringer's Injection, USP, to a final concentration of approximately 0.4 mg/mL. The reconstituted solution may be stored for up to 6 hours at room temperature prior to further dilution. The admixed solution may be stored at room temperature and must be used within 24 hours from the time of initial reconstitution. Both the reconstituted solution and the admixed solution do not need to be protected from light.
PROTONIX I.V. for Injection admixtures should be administered intravenously over a period of approximately 15 minutes at a rate of approximately 7 mL/min.
Two Minute Infusion
PROTONIX I.V. for Injection should be reconstituted with 10 mL of 0.9% Sodium Chloride Injection, USP, to a final concentration of approximately 4 mg/mL. The reconstituted solution may be stored for up to 24 hours at room temperature prior to intravenous infusion and does not need to be protected from light. PROTONIX I.V. for Injection should be administered intravenously over a period of at least 2 minutes.
2.2 Pathological Hypersecretion Including Zollinger-Ellison Syndrome
Recommended Dosage
The dosage of PROTONIX I.V. for Injection in patients with pathological hypersecretory conditions including Zollinger-Ellison Syndrome varies with individual patients. The recommended adult dosage is 80 mg intravenously every 12 hours. The frequency of dosing can be adjusted to individual patient needs based on acid output measurements. In those patients who need a higher dosage, 80 mg intravenously every 8 hours is expected to maintain acid output below 10 mEq/h. Daily doses higher than 240 mg or administered for more than 6 days have not been studied [see Clinical Studies (14)]. Transition from oral to intravenous and from intravenous to oral formulations of gastric acid inhibitors should be performed in such a manner to ensure continuity of effect of suppression of acid secretion. Patients with Zollinger-Ellison Syndrome may be vulnerable to serious clinical complications of increased acid production even after a short period of loss of effective inhibition.
Administration and Preparation Instructions
Fifteen Minute Infusion
Each vial of PROTONIX I.V. for Injection should be reconstituted with 10 mL of 0.9% Sodium Chloride Injection, USP. The contents of the two vials should be combined and further diluted (admixed) with 80 mL of 5% Dextrose Injection, USP, 0.9% Sodium Chloride Injection, USP, or Lactated Ringer's Injection, USP, to a total volume of 100 mL with a final concentration of approximately 0.8 mg/mL. The reconstituted solution may be stored for up to 6 hours at room temperature prior to further dilution. The admixed solution may be stored at room temperature and must be used within 24 hours from the time of initial reconstitution. Both the reconstituted solution and the admixed solution do not need to be protected from light.
PROTONIX I.V. for Injection should be administered intravenously over a period of approximately 15 minutes at a rate of approximately 7 mL/min.
Two minute Infusion
PROTONIX I.V. for Injection should be reconstituted with 10 mL of 0.9% Sodium Chloride Injection, USP, per vial to a final concentration of approximately 4 mg/mL. The reconstituted solution may be stored for up to 24 hours at room temperature prior to intravenous infusion and does not need to be protected from light. The total volume from both vials should be administered intravenously over a period of at least 2 minutes.
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Alburx
ZOSYN should be administered by intravenous infusion over 30 minutes.
2.1 Adult Patients
The usual total daily dose of ZOSYN for adults is 3.375 g every six hours totaling 13.5 g (12.0 g piperacillin/1.5 g tazobactam). The usual duration of ZOSYN treatment is from 7 to 10 days.
ZOSYN should be administered by intravenous infusion over 30 minutes.
2.2 Nosocomial Pneumonia
Initial presumptive treatment of patients with nosocomial pneumonia should start with ZOSYN at a dosage of 4.5 g every six hours plus an aminoglycoside, totaling 18.0 g (16.0 g piperacillin/2.0 g tazobactam). The recommended duration of ZOSYN treatment for nosocomial pneumonia is 7 to 14 days. Treatment with the aminoglycoside should be continued in patients from whom P. aeruginosa is isolated.
2.3 Renal Impairment
In patients with renal impairment (creatinine clearance ≤ 40 mL/min) and dialysis patients (hemodialysis and CAPD), the intravenous dose of ZOSYN should be reduced to the degree of actual renal function impairment. The recommended daily doses of ZOSYN for patients with renal impairment are as follows:
Table 1: Recommended Dosing of ZOSYN in Patients with Normal Renal Function and Renal - Impairment (As total grams piperacillin/tazobactam) Renal Function (creatinine clearance, mL/min) All Indications (except nosocomial pneumonia) Nosocomial Pneumonia * Creatinine clearance for patients not receiving hemodialysis † 0.75 g (0.67 g piperacillin/0.08 g tazobactam) should be administered following each hemodialysis session on hemodialysis days >40 mL/min 3.375 q 6 h 4.5 q 6 h 20–40 mL/min* 2.25 q 6 h 3.375 q 6 h <20 mL/min* 2.25 q 8 h 2.25 q 6 h Hemodialysis† 2.25 q 12 h 2.25 q 8 h CAPD 2.25 q 12 h 2.25 q 8 hFor patients on hemodialysis, the maximum dose is 2.25 g every twelve hours for all indications other than nosocomial pneumonia and 2.25 g every eight hours for nosocomial pneumonia. Since hemodialysis removes 30% to 40% of the administered dose, an additional dose of 0.75 g ZOSYN (0.67 g piperacillin/0.08 g tazobactam) should be administered following each dialysis period on hemodialysis days. No additional dosage of ZOSYN is necessary for CAPD patients.
2.4 Pediatric Patients
For children with appendicitis and/or peritonitis 9 months of age or older, weighing up to 40 kg, and with normal renal function, the recommended ZOSYN dosage is 100 mg piperacillin/12.5 mg tazobactam per kilogram of body weight, every 8 hours. For pediatric patients between 2 months and 9 months of age, the recommended ZOSYN dosage based on pharmacokinetic modeling, is 80 mg piperacillin/10 mg tazobactam per kilogram of body weight, every 8 hours [see Use in Specific Populations (8.4) and Clinical Pharmacology (12.3)]. Pediatric patients weighing over 40 kg and with normal renal function should receive the adult dose.
It has not been determined how to adjust ZOSYN dosage in pediatric patients with renal impairment.
2.5 Reconstitution and Dilution of Powder Formulations
Pharmacy bulk vials
Reconstituted stock solution must be transferred and further diluted for intravenous infusion.
The pharmacy bulk vial is for use in a hospital pharmacy admixture service only under a laminar flow hood. After reconstitution, entry into the vial must be made with a sterile transfer set or other sterile dispensing device, and contents should be dispensed as aliquots into intravenous solution using aseptic technique. Use entire contents of pharmacy bulk vial promptly. Discard unused portion after 24 hours if stored at room temperature (20°C to 25°C [68°F to 77°F]), or after 48 hours if stored at refrigerated temperature (2°C to 8°C [36°F to 46°F]).
Reconstitute the pharmacy bulk vial with exactly 152 mL of a compatible reconstitution diluent, listed below, to a concentration of 200 mg/mL of piperacillin and 25 mg/mL of tazobactam. Shake well until dissolved. Parenteral drug products should be inspected visually for particulate matter and discoloration prior to and during administration whenever solution and container permit.
Single dose vials
Reconstitute ZOSYN vials with a compatible reconstitution diluent from the list provided below.
2.25 g, 3.375 g, and 4.5 g ZOSYN should be reconstituted with 10 mL, 15 mL, and 20 mL, respectively. Swirl until dissolved.
Compatible Reconstitution Diluents for Pharmacy and Single Dose Vials
0.9% sodium chloride for injection Sterile water for injection Dextrose 5% Bacteriostatic saline/parabens Bacteriostatic water/parabens Bacteriostatic saline/benzyl alcohol Bacteriostatic water/benzyl alcohol
Reconstituted ZOSYN solutions for both bulk and single dose vials should be further diluted (recommended volume per dose of 50 mL to 150 mL) in a compatible intravenous solution listed below. Administer by infusion over a period of at least 30 minutes. During the infusion it is desirable to discontinue the primary infusion solution.
Compatible Intravenous Solutions for Pharmacy and Single Dose Vials
0.9% sodium chloride for injectionsterile water for injection1 Dextran 6% in salineDextrose 5%Lactated Ringer's Solution (compatible only with reformulated ZOSYN containing EDTA and is compatible for co-administration via a Y-site)
ZOSYN should not be mixed with other drugs in a syringe or infusion bottle since compatibility has not been established.
ZOSYN is not chemically stable in solutions that contain only sodium bicarbonate and solutions that significantly alter the pH.
ZOSYN should not be added to blood products or albumin hydrolysates. Parenteral drug products should be inspected visually for particulate matter or discoloration prior to administration, whenever solution and container permit.
Stability of ZOSYN Powder Formulations Following Reconstitution
ZOSYN reconstituted from bulk and single vials is stable in glass and plastic containers (plastic syringes, I.V. bags and tubing) when used with compatible diluents. The pharmacy bulk vial should NOT be frozen after reconstitution. Discard unused portions after storage for 24 hours at room temperature or after storage for 48 hours at refrigerated temperature (2°C to 8°C [36°F to 46°F]).
Single dose or pharmacy vials should be used immediately after reconstitution. Discard any unused portion after 24 hours if stored at room temperature (20°C to 25°C [68°F to 77°F]), or after 48 hours if stored at refrigerated temperature (2°C to 8°C [36°F to 46°F]). Vials should not be frozen after reconstitution.
Stability studies in the I.V. bags have demonstrated chemical stability (potency, pH of reconstituted solution and clarity of solution) for up to 24 hours at room temperature and up to one week at refrigerated temperature. ZOSYN contains no preservatives. Appropriate consideration of aseptic technique should be used.
ZOSYN reconstituted from bulk and single vials can be used in ambulatory intravenous infusion pumps. Stability of ZOSYN in an ambulatory intravenous infusion pump has been demonstrated for a period of 12 hours at room temperature. Each dose was reconstituted and diluted to a volume of 37.5 mL or 25 mL. One-day supplies of dosing solution were aseptically transferred into the medication reservoir (I.V. bags or cartridge). The reservoir was fitted to a preprogrammed ambulatory intravenous infusion pump per the manufacturer's instructions. Stability of ZOSYN is not affected when administered using an ambulatory intravenous infusion pump.
1 Maximum recommended volume per dose of sterile water for injection is 50 mL.2.6 Compatibility with Aminoglycosides
Due to the in vitro inactivation of aminoglycosides by piperacillin, ZOSYN and aminoglycosides are recommended for separate administration. ZOSYN and aminoglycosides should be reconstituted, diluted, and administered separately when concomitant therapy with aminoglycosides is indicated [see Drug Interactions (7.1)].
In circumstances where co-administration via Y-site is necessary, ZOSYN formulations containing EDTA are compatible for simultaneous co-administration via Y-site infusion only with the following aminoglycosides under the following conditions:
Table 2: Compatibility with Aminoglycosides Aminoglycoside ZOSYN Dose (grams) ZOSYN Diluent Volume * (mL) Aminoglycoside Concentration Range † (mg/mL) Acceptable Diluents * Diluent volumes apply only to single vials and bulk pharmacy containers † The concentration ranges in Table 2 are based on administration of the aminoglycoside in divided doses (10–15 mg/kg/day in two daily doses for amikacin and 3–5 mg/kg/day in three daily doses for gentamicin). Administration of amikacin or gentamicin in a single daily dose or in doses exceeding those stated above via Y-site with ZOSYN containing EDTA has not been evaluated. See package insert for each aminoglycoside for complete Dosage and Administration instructions. Amikacin 2.253.3754.5 50100150 1.75 – 7.5 0.9% sodium chloride or 5% dextrose Gentamicin 2.253.3754.5 50100150 0.7 – 3.32 0.9% sodium chloride or 5% dextroseOnly the concentration and diluents for amikacin or gentamicin with the dosages of ZOSYN listed above have been established as compatible for co-administration via Y-site infusion. Simultaneous co-administration via Y-site infusion in any manner other than listed above may result in inactivation of the aminoglycoside by ZOSYN.
ZOSYN is not compatible with tobramycin for simultaneous co-administration via Y-site infusion. Compatibility of ZOSYN with other aminoglycosides has not been established.
Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration, whenever solution and container permit.
-
Zosyn
ZOSYN should be administered by intravenous infusion over 30 minutes.
2.1 Adult Patients
The usual total daily dose of ZOSYN for adults is 3.375 g every six hours totaling 13.5 g (12.0 g piperacillin/1.5 g tazobactam). The usual duration of ZOSYN treatment is from 7 to 10 days.
ZOSYN should be administered by intravenous infusion over 30 minutes.
2.2 Nosocomial Pneumonia
Initial presumptive treatment of patients with nosocomial pneumonia should start with ZOSYN at a dosage of 4.5 g every six hours plus an aminoglycoside, totaling 18.0 g (16.0 g piperacillin/2.0 g tazobactam). The recommended duration of ZOSYN treatment for nosocomial pneumonia is 7 to 14 days. Treatment with the aminoglycoside should be continued in patients from whom P. aeruginosa is isolated.
2.3 Renal Impairment
In patients with renal impairment (creatinine clearance ≤ 40 mL/min) and dialysis patients (hemodialysis and CAPD), the intravenous dose of ZOSYN should be reduced to the degree of actual renal function impairment. The recommended daily doses of ZOSYN for patients with renal impairment are as follows:
Table 1: Recommended Dosing of ZOSYN in Patients with Normal Renal Function and Renal -Impairment (As total grams piperacillin/tazobactam) Renal Function (creatinine clearance, mL/min) All Indications (except nosocomial pneumonia) Nosocomial Pneumonia * Creatinine clearance for patients not receiving hemodialysis † 0.75 g (0.67 g piperacillin/0.08 g tazobactam) should be administered following each hemodialysis session on hemodialysis days >40 mL/min 3.375 q 6 h 4.5 q 6 h 20–40 mL/min* 2.25 q 6 h 3.375 q 6 h <20 mL/min* 2.25 q 8 h 2.25 q 6 h Hemodialysis† 2.25 q 12 h 2.25 q 8 h CAPD 2.25 q 12 h 2.25 q 8 hFor patients on hemodialysis, the maximum dose is 2.25 g every twelve hours for all indications other than nosocomial pneumonia and 2.25 g every eight hours for nosocomial pneumonia. Since hemodialysis removes 30% to 40% of the administered dose, an additional dose of 0.75 g ZOSYN (0.67 g piperacillin/0.08 g tazobactam) should be administered following each dialysis period on hemodialysis days. No additional dosage of ZOSYN is necessary for CAPD patients.
2.4 Pediatric Patients
For children with appendicitis and/or peritonitis 9 months of age or older, weighing up to 40 kg, and with normal renal function, the recommended ZOSYN dosage is 100 mg piperacillin/12.5 mg tazobactam per kilogram of body weight, every 8 hours. For pediatric patients between 2 months and 9 months of age, the recommended ZOSYN dosage based on pharmacokinetic modeling, is 80 mg piperacillin/10 mg tazobactam per kilogram of body weight, every 8 hours [see Use in Specific Populations (8.4) and Clinical Pharmacology (12.3)]. Pediatric patients weighing over 40 kg and with normal renal function should receive the adult dose.
It has not been determined how to adjust ZOSYN dosage in pediatric patients with renal impairment.
2.5 Reconstitution and Dilution of Powder Formulations
Pharmacy bulk vials
Reconstituted stock solution must be transferred and further diluted for intravenous infusion.
The pharmacy bulk vial is for use in a hospital pharmacy admixture service only under a laminar flow hood. After reconstitution, entry into the vial must be made with a sterile transfer set or other sterile dispensing device, and contents should be dispensed as aliquots into intravenous solution using aseptic technique. Use entire contents of pharmacy bulk vial promptly. Discard unused portion after 24 hours if stored at room temperature (20°C to 25°C [68°F to 77°F]), or after 48 hours if stored at refrigerated temperature (2°C to 8°C [36°F to 46°F]).
Reconstitute the pharmacy bulk vial with exactly 152 mL of a compatible reconstitution diluent, listed below, to a concentration of 200 mg/mL of piperacillin and 25 mg/mL of tazobactam. Shake well until dissolved. Parenteral drug products should be inspected visually for particulate matter and discoloration prior to and during administration whenever solution and container permit.
Single dose vials
Reconstitute ZOSYN vials with a compatible reconstitution diluent from the list provided below.
2.25 g, 3.375 g, and 4.5 g ZOSYN should be reconstituted with 10 mL, 15 mL, and 20 mL, respectively. Swirl until dissolved.
Compatible Reconstitution Diluents for Pharmacy and Single Dose Vials
0.9% sodium chloride for injection Sterile water for injection Dextrose 5% Bacteriostatic saline/parabens Bacteriostatic water/parabens Bacteriostatic saline/benzyl alcohol Bacteriostatic water/benzyl alcohol
Reconstituted ZOSYN solutions for both bulk and single dose vials should be further diluted (recommended volume per dose of 50 mL to 150 mL) in a compatible intravenous solution listed below. Administer by infusion over a period of at least 30 minutes. During the infusion it is desirable to discontinue the primary infusion solution.
Compatible Intravenous Solutions for Pharmacy and Single Dose Vials
0.9% sodium chloride for injectionsterile water for injection1 Dextran 6% in salineDextrose 5%Lactated Ringer's Solution (compatible only with reformulated ZOSYN containing EDTA and is compatible for co-administration via a Y-site)
ZOSYN should not be mixed with other drugs in a syringe or infusion bottle since compatibility has not been established.
ZOSYN is not chemically stable in solutions that contain only sodium bicarbonate and solutions that significantly alter the pH.
ZOSYN should not be added to blood products or albumin hydrolysates. Parenteral drug products should be inspected visually for particulate matter or discoloration prior to administration, whenever solution and container permit.
Stability of ZOSYN Powder Formulations Following Reconstitution
ZOSYN reconstituted from bulk and single vials is stable in glass and plastic containers (plastic syringes, I.V. bags and tubing) when used with compatible diluents. The pharmacy bulk vial should NOT be frozen after reconstitution. Discard unused portions after storage for 24 hours at room temperature or after storage for 48 hours at refrigerated temperature (2°C to 8°C [36°F to 46°F]).
Single dose or pharmacy vials should be used immediately after reconstitution. Discard any unused portion after 24 hours if stored at room temperature (20°C to 25°C [68°F to 77°F]), or after 48 hours if stored at refrigerated temperature (2°C to 8°C [36°F to 46°F]). Vials should not be frozen after reconstitution.
Stability studies in the I.V. bags have demonstrated chemical stability (potency, pH of reconstituted solution and clarity of solution) for up to 24 hours at room temperature and up to one week at refrigerated temperature. ZOSYN contains no preservatives. Appropriate consideration of aseptic technique should be used.
ZOSYN reconstituted from bulk and single vials can be used in ambulatory intravenous infusion pumps. Stability of ZOSYN in an ambulatory intravenous infusion pump has been demonstrated for a period of 12 hours at room temperature. Each dose was reconstituted and diluted to a volume of 37.5 mL or 25 mL. One-day supplies of dosing solution were aseptically transferred into the medication reservoir (I.V. bags or cartridge). The reservoir was fitted to a preprogrammed ambulatory intravenous infusion pump per the manufacturer's instructions. Stability of ZOSYN is not affected when administered using an ambulatory intravenous infusion pump.
1 Maximum recommended volume per dose of sterile water for injection is 50 mL.2.6 Directions for Use of ZOSYN in GALAXY Containers
ZOSYN Injection is to be administered using sterile equipment, after thawing to room temperature.
ZOSYN containing EDTA is compatible for co-administration via a Y-site intravenous tube with Lactated Ringer's injection, USP.
Do not add supplementary medication.
Unused portions of ZOSYN should be discarded.
CAUTION: Do not use plastic containers in series connections. Such use could result in air embolism due to residual air being drawn from the primary container before administration of the fluid from the secondary container is complete.
Thawing of Plastic Container
Thaw frozen container at room temperature 20°C to 25°C [68°F to 77°F] or under refrigeration (2°C to 8°C [36°F to 46°F]). Do not force thaw by immersion in water baths or by microwave irradiation.
Check for minute leaks by squeezing container firmly. If leaks are detected, discard solution as sterility may be impaired.
The container should be visually inspected. Components of the solution may precipitate in the frozen state and will dissolve upon reaching room temperature with little or no agitation. Potency is not affected. Agitate after solution has reached room temperature. If after visual inspection, the solution remains cloudy or if an insoluble precipitate is noted or if any seals or outlet ports are not intact, the container should be discarded.
Administer by infusion over a period of at least 30 minutes. During the infusion it is desirable to discontinue the primary infusion solution.
Storage
Store in a freezer capable of maintaining a temperature of -20°C (-4°F).
For GALAXY containers, the thawed solution is stable for 14 days under refrigeration (2°C to 8°C [36°F to 46°F]) or 24 hours at room temperature 20°C to 25°C [68°F to 77°F]. Do not refreeze thawed ZOSYN.
2.7 Compatibility with Aminoglycosides
Due to the in vitro inactivation of aminoglycosides by piperacillin, ZOSYN and aminoglycosides are recommended for separate administration. ZOSYN and aminoglycosides should be reconstituted, diluted, and administered separately when concomitant therapy with aminoglycosides is indicated [see Drug Interactions (7.1)].
In circumstances where co-administration via Y-site is necessary, ZOSYN formulations containing EDTA are compatible for simultaneous co-administration via Y-site infusion only with the following aminoglycosides under the following conditions:
Table 2: Compatibility with Aminoglycosides Aminoglycoside ZOSYN Dose(grams) ZOSYN Diluent Volume * (mL) Aminoglycoside Concentration Range † (mg/mL) Acceptable Diluents * Diluent volumes apply only to single vials and bulk pharmacy containers † The concentration ranges in Table 2 are based on administration of the aminoglycoside in divided doses (10–15 mg/kg/day in two daily doses for amikacin and 3–5 mg/kg/day in three daily doses for gentamicin). Administration of amikacin or gentamicin in a single daily dose or in doses exceeding those stated above via Y-site with ZOSYN containing EDTA has not been evaluated. See package insert for each aminoglycoside for complete Dosage and Administration instructions. ‡ ZOSYN 3.375 g per 50 mL GALAXY containers are NOT compatible with gentamicin for co-administration via a Y-site due to the higher concentrations of piperacillin and tazobactam. Amikacin 2.253.3754.5 50100150 1.75 – 7.5 0.9% sodium chloride or 5% dextrose Gentamicin 2.253.375‡ 4.5 50100150 0.7 – 3.32 0.9% sodium chloride or 5% dextroseOnly the concentration and diluents for amikacin or gentamicin with the dosages of ZOSYN listed above have been established as compatible for co-administration via Y-site infusion. Simultaneous co-administration via Y-site infusion in any manner other than listed above may result in inactivation of the aminoglycoside by ZOSYN.
ZOSYN is not compatible with tobramycin for simultaneous co-administration via Y-site infusion. Compatibility of ZOSYN with other aminoglycosides has not been established.
Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration, whenever solution and container permit.
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Zosyn
ZOSYN should be administered by intravenous infusion over 30 minutes.
2.1 Adult Patients
The usual total daily dose of ZOSYN for adults is 3.375 g every six hours totaling 13.5 g (12.0 g piperacillin/1.5 g tazobactam). The usual duration of ZOSYN treatment is from 7 to 10 days.
ZOSYN should be administered by intravenous infusion over 30 minutes.
2.2 Nosocomial Pneumonia
Initial presumptive treatment of patients with nosocomial pneumonia should start with ZOSYN at a dosage of 4.5 g every six hours plus an aminoglycoside, totaling 18.0 g (16.0 g piperacillin/2.0 g tazobactam). The recommended duration of ZOSYN treatment for nosocomial pneumonia is 7 to 14 days. Treatment with the aminoglycoside should be continued in patients from whom P. aeruginosa is isolated.
2.3 Renal Impairment
In patients with renal impairment (creatinine clearance ≤ 40 mL/min) and dialysis patients (hemodialysis and CAPD), the intravenous dose of ZOSYN should be reduced to the degree of actual renal function impairment. The recommended daily doses of ZOSYN for patients with renal impairment are as follows:
Table 1: Recommended Dosing of ZOSYN in Patients with Normal Renal Function and Renal - Impairment (As total grams piperacillin/tazobactam) Renal Function (creatinine clearance, mL/min) All Indications (except nosocomial pneumonia) Nosocomial Pneumonia * Creatinine clearance for patients not receiving hemodialysis † 0.75 g (0.67 g piperacillin/0.08 g tazobactam) should be administered following each hemodialysis session on hemodialysis days >40 mL/min 3.375 q 6 h 4.5 q 6 h 20–40 mL/min* 2.25 q 6 h 3.375 q 6 h <20 mL/min* 2.25 q 8 h 2.25 q 6 h Hemodialysis† 2.25 q 12 h 2.25 q 8 h CAPD 2.25 q 12 h 2.25 q 8 hFor patients on hemodialysis, the maximum dose is 2.25 g every twelve hours for all indications other than nosocomial pneumonia and 2.25 g every eight hours for nosocomial pneumonia. Since hemodialysis removes 30% to 40% of the administered dose, an additional dose of 0.75 g ZOSYN (0.67 g piperacillin/0.08 g tazobactam) should be administered following each dialysis period on hemodialysis days. No additional dosage of ZOSYN is necessary for CAPD patients.
2.4 Pediatric Patients
For children with appendicitis and/or peritonitis 9 months of age or older, weighing up to 40 kg, and with normal renal function, the recommended ZOSYN dosage is 100 mg piperacillin/12.5 mg tazobactam per kilogram of body weight, every 8 hours. For pediatric patients between 2 months and 9 months of age, the recommended ZOSYN dosage based on pharmacokinetic modeling, is 80 mg piperacillin/10 mg tazobactam per kilogram of body weight, every 8 hours [see Use in Specific Populations (8.4) and Clinical Pharmacology (12.3)]. Pediatric patients weighing over 40 kg and with normal renal function should receive the adult dose.
It has not been determined how to adjust ZOSYN dosage in pediatric patients with renal impairment.
2.5 Reconstitution and Dilution of Powder Formulations
Pharmacy bulk vials
Reconstituted stock solution must be transferred and further diluted for intravenous infusion.
The pharmacy bulk vial is for use in a hospital pharmacy admixture service only under a laminar flow hood. After reconstitution, entry into the vial must be made with a sterile transfer set or other sterile dispensing device, and contents should be dispensed as aliquots into intravenous solution using aseptic technique. Use entire contents of pharmacy bulk vial promptly. Discard unused portion after 24 hours if stored at room temperature (20°C to 25°C [68°F to 77°F]), or after 48 hours if stored at refrigerated temperature (2°C to 8°C [36°F to 46°F]).
Reconstitute the pharmacy bulk vial with exactly 152 mL of a compatible reconstitution diluent, listed below, to a concentration of 200 mg/mL of piperacillin and 25 mg/mL of tazobactam. Shake well until dissolved. Parenteral drug products should be inspected visually for particulate matter and discoloration prior to and during administration whenever solution and container permit.
Single dose vials
Reconstitute ZOSYN vials with a compatible reconstitution diluent from the list provided below.
2.25 g, 3.375 g, and 4.5 g ZOSYN should be reconstituted with 10 mL, 15 mL, and 20 mL, respectively. Swirl until dissolved.
Compatible Reconstitution Diluents for Pharmacy and Single Dose Vials
0.9% sodium chloride for injectionSterile water for injection Dextrose 5% Bacteriostatic saline/parabensBacteriostatic water/parabens Bacteriostatic saline/benzyl alcoholBacteriostatic water/benzyl alcohol
Reconstituted ZOSYN solutions for both bulk and single dose vials should be further diluted (recommended volume per dose of 50 mL to 150 mL) in a compatible intravenous solution listed below. Administer by infusion over a period of at least 30 minutes. During the infusion it is desirable to discontinue the primary infusion solution.
Compatible Intravenous Solutions for Pharmacy and Single Dose Vials
0.9% sodium chloride for injection sterile water for injection1 Dextran 6% in saline Dextrose 5%Lactated Ringer's Solution (compatible only with reformulated ZOSYN containing EDTA and is compatible for co-administration via a Y-site)
ZOSYN should not be mixed with other drugs in a syringe or infusion bottle since compatibility has not been established.
ZOSYN is not chemically stable in solutions that contain only sodium bicarbonate and solutions that significantly alter the pH.
ZOSYN should not be added to blood products or albumin hydrolysates. Parenteral drug products should be inspected visually for particulate matter or discoloration prior to administration, whenever solution and container permit.
1 Maximum recommended volume per dose of sterile water for injection is 50 mL.Stability of ZOSYN Powder Formulations Following Reconstitution
ZOSYN reconstituted from bulk and single vials is stable in glass and plastic containers (plastic syringes, I.V. bags and tubing) when used with compatible diluents. The pharmacy bulk vial should NOT be frozen after reconstitution. Discard unused portions after storage for 24 hours at room temperature or after storage for 48 hours at refrigerated temperature (2°C to 8°C [36°F to 46°F]).
Single dose or pharmacy vials should be used immediately after reconstitution. Discard any unused portion after 24 hours if stored at room temperature (20°C to 25°C [68°F to 77°F]), or after 48 hours if stored at refrigerated temperature (2°C to 8°C [36°F to 46°F]). Vials should not be frozen after reconstitution.
Stability studies in the I.V. bags have demonstrated chemical stability (potency, pH of reconstituted solution and clarity of solution) for up to 24 hours at room temperature and up to one week at refrigerated temperature. ZOSYN contains no preservatives. Appropriate consideration of aseptic technique should be used.
ZOSYN reconstituted from bulk and single vials can be used in ambulatory intravenous infusion pumps. Stability of ZOSYN in an ambulatory intravenous infusion pump has been demonstrated for a period of 12 hours at room temperature. Each dose was reconstituted and diluted to a volume of 37.5 mL or 25 mL. One-day supplies of dosing solution were aseptically transferred into the medication reservoir (I.V. bags or cartridge). The reservoir was fitted to a preprogrammed ambulatory intravenous infusion pump per the manufacturer's instructions. Stability of ZOSYN is not affected when administered using an ambulatory intravenous infusion pump.
2.6 Directions for Use of ZOSYN in GALAXY Containers
ZOSYN Injection is to be administered using sterile equipment, after thawing to room temperature.
ZOSYN containing EDTA is compatible for co-administration via a Y-site intravenous tube with Lactated Ringer's injection, USP.
Do not add supplementary medication.
Unused portions of ZOSYN should be discarded.
CAUTION: Do not use plastic containers in series connections. Such use could result in air embolism due to residual air being drawn from the primary container before administration of the fluid from the secondary container is complete.
Thawing of Plastic Container
Thaw frozen container at room temperature 20°C to 25°C [68°F to 77°F] or under refrigeration (2°C to 8°C [36°F to 46°F]). Do not force thaw by immersion in water baths or by microwave irradiation.
Check for minute leaks by squeezing container firmly. If leaks are detected, discard solution as sterility may be impaired.
The container should be visually inspected. Components of the solution may precipitate in the frozen state and will dissolve upon reaching room temperature with little or no agitation. Potency is not affected. Agitate after solution has reached room temperature. If after visual inspection, the solution remains cloudy or if an insoluble precipitate is noted or if any seals or outlet ports are not intact, the container should be discarded.
Administer by infusion over a period of at least 30 minutes. During the infusion it is desirable to discontinue the primary infusion solution.
Storage
Store in a freezer capable of maintaining a temperature of -20°C (-4°F).
For GALAXY containers, the thawed solution is stable for 14 days under refrigeration (2°C to 8°C [36°F to 46°F]) or 24 hours at room temperature 20°C to 25°C [68°F to 77°F]. Do not refreeze thawed ZOSYN.
2.7 Compatibility with Aminoglycosides
Due to the in vitro inactivation of aminoglycosides by piperacillin, ZOSYN and aminoglycosides are recommended for separate administration. ZOSYN and aminoglycosides should be reconstituted, diluted, and administered separately when concomitant therapy with aminoglycosides is indicated [see Drug Interactions (7.1)].
In circumstances where co-administration via Y-site is necessary, ZOSYN formulations containing EDTA are compatible for simultaneous co-administration via Y-site infusion only with the following aminoglycosides under the following conditions:
Table 2: Compatibility with Aminoglycosides Aminoglycoside ZOSYN Dose (grams) ZOSYN Diluent Volume * (mL) Aminoglycoside Concentration Range † (mg/mL) Acceptable Diluents * Diluent volumes apply only to single vials and bulk pharmacy containers † The concentration ranges in Table 2 are based on administration of the aminoglycoside in divided doses (10–15 mg/kg/day in two daily doses for amikacin and 3–5 mg/kg/day in three daily doses for gentamicin). Administration of amikacin or gentamicin in a single daily dose or in doses exceeding those stated above via Y-site with ZOSYN containing EDTA has not been evaluated. See package insert for each aminoglycoside for complete Dosage and Administration instructions. ‡ ZOSYN 3.375 g per 50 mL GALAXY containers are NOT compatible with gentamicin for co-administration via a Y-site due to the higher concentrations of piperacillin and tazobactam. Amikacin 2.25 3.375 4.5 50 100 150 1.75 – 7.5 0.9% sodium chloride or 5% dextrose Gentamicin 2.25 3.375‡ 4.5 50100150 0.7 – 3.32 0.9% sodium chloride or 5% dextroseOnly the concentration and diluents for amikacin or gentamicin with the dosages of ZOSYN listed above have been established as compatible for co-administration via Y-site infusion. Simultaneous co-administration via Y-site infusion in any manner other than listed above may result in inactivation of the aminoglycoside by ZOSYN.
ZOSYN is not compatible with tobramycin for simultaneous co-administration via Y-site infusion. Compatibility of ZOSYN with other aminoglycosides has not been established.
Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration, whenever solution and container permit.
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Protonix I.v.
Parenteral drug products should be inspected visually for particulate matter and discoloration prior to and during administration whenever solution and container permit.
Parenteral routes of administration other than intravenous are not recommended.
PROTONIX I.V. for Injection may be administered intravenously through a dedicated line or through a Y-site. The intravenous line should be flushed before and after administration of PROTONIX I.V. for Injection with either 5% Dextrose Injection, USP, 0.9% Sodium Chloride Injection, USP, or Lactated Ringer's Injection, USP. When administered through a Y-site, PROTONIX I.V. for Injection is compatible with the following solutions: 5% Dextrose Injection, USP, 0.9% Sodium Chloride Injection, USP, or Lactated Ringer's Injection, USP.
Midazolam HCl has been shown to be incompatible with Y-site administration of PROTONIX I.V. for Injection. PROTONIX I.V. for Injection may not be compatible with products containing zinc. When PROTONIX I.V. for Injection is administered through a Y-site, immediately stop use if precipitation or discoloration occurs.
2.1 Gastroesophageal Reflux Disease Associated With a History of Erosive Esophagitis
Recommended Dosage
The recommended adult dose is 40 mg pantoprazole given once daily by intravenous infusion for 7 to 10 days.
Treatment with PROTONIX® I.V. (pantoprazole sodium) for Injection should be discontinued as soon as the patient is able to receive treatment with PROTONIX Delayed-Release Tablets or Oral Suspension.
Administration and Preparation Instructions
Data on the safe and effective dosing for conditions other than those described [see Indications and Usage (1)] such as life-threatening upper gastrointestinal bleeds, are not available. PROTONIX I.V. 40 mg once daily does not raise gastric pH to levels sufficient to contribute to the treatment of such life-threatening conditions.
Fifteen Minute Infusion
PROTONIX I.V. for Injection should be reconstituted with 10 mL of 0.9% Sodium Chloride Injection, USP, and further diluted (admixed) with 100 mL of 5% Dextrose Injection, USP, 0.9% Sodium Chloride Injection, USP, or Lactated Ringer's Injection, USP, to a final concentration of approximately 0.4 mg/mL. The reconstituted solution may be stored for up to 6 hours at room temperature prior to further dilution. The admixed solution may be stored at room temperature and must be used within 24 hours from the time of initial reconstitution. Both the reconstituted solution and the admixed solution do not need to be protected from light.
PROTONIX I.V. for Injection admixtures should be administered intravenously over a period of approximately 15 minutes at a rate of approximately 7 mL/min.
Two Minute Infusion
PROTONIX I.V. for Injection should be reconstituted with 10 mL of 0.9% Sodium Chloride Injection, USP, to a final concentration of approximately 4 mg/mL. The reconstituted solution may be stored for up to 24 hours at room temperature prior to intravenous infusion and does not need to be protected from light. PROTONIX I.V. for Injection should be administered intravenously over a period of at least 2 minutes.
2.2 Pathological Hypersecretion Including Zollinger-Ellison Syndrome
Recommended Dosage
The dosage of PROTONIX I.V. for Injection in patients with pathological hypersecretory conditions including Zollinger-Ellison Syndrome varies with individual patients. The recommended adult dosage is 80 mg intravenously every 12 hours. The frequency of dosing can be adjusted to individual patient needs based on acid output measurements. In those patients who need a higher dosage, 80 mg intravenously every 8 hours is expected to maintain acid output below 10 mEq/h. Daily doses higher than 240 mg or administered for more than 6 days have not been studied [see Clinical Studies (14)]. Transition from oral to intravenous and from intravenous to oral formulations of gastric acid inhibitors should be performed in such a manner to ensure continuity of effect of suppression of acid secretion. Patients with Zollinger-Ellison Syndrome may be vulnerable to serious clinical complications of increased acid production even after a short period of loss of effective inhibition.
Administration and Preparation Instructions
Fifteen Minute Infusion
Each vial of PROTONIX I.V. for Injection should be reconstituted with 10 mL of 0.9% Sodium Chloride Injection, USP. The contents of the two vials should be combined and further diluted (admixed) with 80 mL of 5% Dextrose Injection, USP, 0.9% Sodium Chloride Injection, USP, or Lactated Ringer's Injection, USP, to a total volume of 100 mL with a final concentration of approximately 0.8 mg/mL. The reconstituted solution may be stored for up to 6 hours at room temperature prior to further dilution. The admixed solution may be stored at room temperature and must be used within 24 hours from the time of initial reconstitution. Both the reconstituted solution and the admixed solution do not need to be protected from light.
PROTONIX I.V. for Injection should be administered intravenously over a period of approximately 15 minutes at a rate of approximately 7 mL/min.
Two minute Infusion
PROTONIX I.V. for Injection should be reconstituted with 10 mL of 0.9% Sodium Chloride Injection, USP, per vial to a final concentration of approximately 4 mg/mL. The reconstituted solution may be stored for up to 24 hours at room temperature prior to intravenous infusion and does not need to be protected from light. The total volume from both vials should be administered intravenously over a period of at least 2 minutes.
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Tygacil
2.1 General Dosage and Administration
The recommended dosage regimen for TYGACIL is an initial dose of 100 mg, followed by 50 mg every 12 hours. Intravenous infusions of TYGACIL should be administered over approximately 30 to 60 minutes every 12 hours.
The recommended duration of treatment with TYGACIL for complicated skin and skin structure infections or for complicated intra-abdominal infections is 5 to 14 days. The recommended duration of treatment with TYGACIL for community-acquired bacterial pneumonia is 7 to 14 days. The duration of therapy should be guided by the severity and site of the infection and the patient's clinical and bacteriological progress.
2.2 Patients With Hepatic Impairment
No dosage adjustment is warranted in patients with mild to moderate hepatic impairment (Child Pugh A and Child Pugh B). In patients with severe hepatic impairment (Child Pugh C), the initial dose of TYGACIL should be 100 mg followed by a reduced maintenance dose of 25 mg every 12 hours. Patients with severe hepatic impairment (Child Pugh C) should be treated with caution and monitored for treatment response [see Clinical Pharmacology (12.3) and Use in Specific Populations (8.6)].
2.3 Pediatric Patients
The safety and efficacy of the proposed pediatric dosing regimens have not been evaluated due to the observed increase in mortality associated with tigecycline in adult patients. Tigecycline should not be used in pediatric patients unless no alternative antibacterial drugs are available. Under these circumstances, the following doses are suggested:
Pediatric patients aged 8 to 11 years should receive 1.2 mg/kg of tigecycline every 12 hours intravenously to a maximum dose of 50 mg of tigecycline every 12 hours. Pediatric patients aged 12 to 17 years should receive 50 mg of tigecycline every 12 hours,The proposed pediatric doses of tigecycline were chosen based on exposures observed in pharmacokinetic trials, which included small numbers of pediatric patients [see Use in Specific Populations (8.4) and Clinical Pharmacology (12.3)].
2.4 Preparation and Handling
Each vial of TYGACIL should be reconstituted with 5.3 mL of 0.9% Sodium Chloride Injection, USP, 5% Dextrose Injection, USP, or Lactated Ringer's Injection, USP to achieve a concentration of 10 mg/mL of tigecycline. (Note: Each vial contains a 6% overage. Thus, 5 mL of reconstituted solution is equivalent to 50 mg of the drug.) The vial should be gently swirled until the drug dissolves. Withdraw 5 mL of the reconstituted solution from the vial and add to a 100 mL intravenous bag for infusion (for a 100 mg dose, reconstitute two vials; for a 50 mg dose, reconstitute one vial). The maximum concentration in the intravenous bag should be 1 mg/mL. The reconstituted solution should be yellow to orange in color; if not, the solution should be discarded. Parenteral drug products should be inspected visually for particulate matter and discoloration (e.g., green or black) prior to administration. Once reconstituted, TYGACIL may be stored at room temperature (not to exceed 25°C/77°F) for up to 24 hours (up to 6 hours in the vial and the remaining time in the intravenous bag). If the storage conditions exceed 25°C (77°F) after reconstitution, tigecycline should be used immediately. Alternatively, TYGACIL mixed with 0.9% Sodium Chloride Injection, USP or 5% Dextrose Injection, USP may be stored refrigerated at 2° to 8°C (36° to 46°F) for up to 48 hours following immediate transfer of the reconstituted solution into the intravenous bag.
TYGACIL may be administered intravenously through a dedicated line or through a Y-site. If the same intravenous line is used for sequential infusion of several drugs, the line should be flushed before and after infusion of TYGACIL with 0.9% Sodium Chloride Injection, USP, 5% Dextrose Injection, USP or Lactated Ringer's Injection, USP. Injection should be made with an infusion solution compatible with tigecycline and with any other drug(s) administered via this common line.
Compatibilities
Compatible intravenous solutions include 0.9% Sodium Chloride Injection, USP, 5% Dextrose Injection, USP, and Lactated Ringer's Injection, USP. When administered through a Y-site, TYGACIL is compatible with the following drugs or diluents when used with either 0.9% Sodium Chloride Injection, USP or 5% Dextrose Injection, USP: amikacin, dobutamine, dopamine HCl, gentamicin, haloperidol, Lactated Ringer's, lidocaine HCl, metoclopramide, morphine, norepinephrine, piperacillin/tazobactam (EDTA formulation), potassium chloride, propofol, ranitidine HCl, theophylline, and tobramycin.
Incompatibilities
The following drugs should not be administered simultaneously through the same Y-site as TYGACIL: amphotericin B, amphotericin B lipid complex, diazepam, esomeprazole and omeprazole.
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Effexor Xr
Effexor XR should be administered in a single dose with food, either in the morning or in the evening at approximately the same time each day [see Clinical Pharmacology (12.3)]. Each capsule should be swallowed whole with fluid and not divided, crushed, chewed, or placed in water or it may be administered by carefully opening the capsule and sprinkling the entire contents on a spoonful of applesauce. This drug/food mixture should be swallowed immediately without chewing and followed with a glass of water to ensure complete swallowing of the pellets (spheroids).
2.1 Major Depressive Disorder
For most patients, the recommended starting dose for Effexor XR is 75 mg per day, administered in a single dose. For some patients, it may be desirable to start at 37.5 mg per day for 4 to 7 days to allow new patients to adjust to the medication before increasing to 75 mg per day. Patients not responding to the initial 75 mg per day dose may benefit from dose increases to a maximum of 225 mg per day. Dose increases should be in increments of up to 75 mg per day, as needed, and should be made at intervals of not less than 4 days, since steady-state plasma levels of venlafaxine and its major metabolites are achieved in most patients by day 4 [see Clinical Pharmacology (12.3)]. In the clinical studies establishing efficacy, upward titration was permitted at intervals of 2 weeks or more.
It should be noted that, while the maximum recommended dose for moderately depressed outpatients is also 225 mg per day for Effexor (immediate-release), more severely depressed inpatients in one study of the development program for that product responded to a mean dose of 350 mg per day (range of 150 to 375 mg per day). Whether or not higher doses of Effexor XR are needed for more severely depressed patients is unknown; however, the experience with Effexor XR doses higher than 225 mg per day is very limited.
2.2 Generalized Anxiety Disorder
For most patients, the recommended starting dose for Effexor XR is 75 mg per day, administered in a single dose. For some patients, it may be desirable to start at 37.5 mg per day for 4 to 7 days to allow new patients to adjust to the medication before increasing to 75 mg per day. Patients not responding to the initial 75 mg per day dose may benefit from dose increases to a maximum of 225 mg per day. Dose increases should be in increments of up to 75 mg per day, as needed, and should be made at intervals of not less than 4 days, since steady-state plasma levels of venlafaxine and its major metabolites are achieved in most patients by day 4 [see Clinical Pharmacology (12.3)].
2.3 Social Anxiety Disorder (Social Phobia)
The recommended dose is 75 mg per day, administered in a single dose. There was no evidence that higher doses confer any additional benefit.
2.4 Panic Disorder
The recommended starting dose is 37.5 mg per day of Effexor XR for 7 days. Patients not responding to 75 mg per day may benefit from dose increases to a maximum of approximately 225 mg per day. Dose increases should be in increments of up to 75 mg per day, as needed, and should be made at intervals of not less than 7 days.
2.5 Switching Patients from Effexor Tablets
Depressed patients who are currently being treated at a therapeutic dose with Effexor (immediate release) may be switched to Effexor XR at the nearest equivalent dose (mg per day), e.g., 37.5 mg venlafaxine twice a day to 75 mg Effexor XR once daily. However, individual dosage adjustments may be necessary.
2.6 Specific Populations
Patients with Hepatic Impairment
The total daily dose should be reduced by 50% in patients with mild (Child-Pugh=5–6) to moderate (Child-Pugh=7–9) hepatic impairment. In patients with severe hepatic impairment (Child-Pugh=10–15) or hepatic cirrhosis, it may be necessary to reduce the dose by 50% or more [See Use in Specific Populations ( 8.7)].
Patients with Renal Impairment
The total daily dose should be reduced by 25% to 50% in patients with mild (CLcr= 60–89 mL/min) or moderate (CLcr= 30–59 mL/min) renal impairment. In patients undergoing hemodialysis or with severe renal impairment (CLcr < 30 mL/min), the total daily dose should be reduced by 50% or more. Because there was much individual variability in clearance between patients with renal impairment, individualization of dosage may be desirable in some patients [see Use in Specific Populations ( 8.7)].
2.7 Maintenance Treatment
There is no body of evidence available from controlled studies to indicate how long patients with MDD, GAD, SAD, or PD should be treated with Effexor XR.
It is generally agreed that acute episodes of MDD require several months or longer of sustained pharmacological therapy beyond response to the acute episode. Effexor XR/Effexor have demonstrated continuation of response in clinical studies up to 52 weeks, at the same dose at which patients responded during the initial treatment [see Clinical Studies (14.1)]. It is not known whether or not the dose of Effexor XR 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.
In patients with GAD and SAD, Effexor XR has been shown to be effective in 6-month clinical studies. The need for continuing medication in patients with GAD and SAD who improve with Effexor XR treatment should be periodically reassessed.
In a clinical study for PD, patients continuing Effexor XR at the same dose at which they responded during the initial 12 weeks of treatment experienced a statistically significantly longer time to relapse than patients randomized to placebo [see Clinical Studies (14.4)]. The need for continuing medication in patients with PD who improve with Effexor XR treatment should be periodically reassessed.
2.8 Discontinuing Effexor XR
A gradual reduction in the dose, rather than abrupt cessation, is recommended whenever possible. In clinical studies with Effexor XR, tapering was achieved by reducing the daily dose by 75 mg at one-week intervals. Individualization of tapering may be necessary [see Warnings and Precautions (5.7)].
2.9 Switching Patients 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 Effexor XR. In addition, at least 7 days should be allowed after stopping Effexor XR before starting an MAOI intended to treat psychiatric disorders [see Contraindications (4.2), Warnings and Precautions (5.2), and Drug Interactions (7.2)].
Use of Effexor XR with other MAOIs such as Linezolid or Intravenous Methylene Blue
Do not start Effexor XR 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 4.2)].
In some cases, a patient already receiving Effexor XR therapy may require urgent treatment with linezolid or intravenous methylene blue. If acceptable alternatives to linezolid or intravenous methylene blue 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, Effexor XR should be stopped promptly, and linezolid or intravenous methylene blue can be administered. Monitor the patient for symptoms of serotonin syndrome for 7 days or until 24 hours after the last dose of linezolid or intravenous methylene blue, whichever comes first. Therapy with Effexor XR can be resumed 24 hours after the last dose of linezolid or intravenous methylene blue [see Warnings and Precautions (5.2)].
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 concomitantly with Effexor XR is unclear. The clinician should, nevertheless, be aware of the possibility of emergent symptoms of serotonin syndrome with such use [see Warnings and Precautions (5.2)].
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Cordarone
BECAUSE OF THE UNIQUE PHARMACOKINETIC PROPERTIES, DIFFICULT DOSING SCHEDULE, AND SEVERITY OF THE SIDE EFFECTS IF PATIENTS ARE IMPROPERLY MONITORED, CORDARONE SHOULD BE ADMINISTERED ONLY BY PHYSICIANS WHO ARE EXPERIENCED IN THE TREATMENT OF LIFE-THREATENING ARRHYTHMIAS WHO ARE THOROUGHLY FAMILIAR WITH THE RISKS AND BENEFITS OF CORDARONE THERAPY, AND WHO HAVE ACCESS TO LABORATORY FACILITIES CAPABLE OF ADEQUATELY MONITORING THE EFFECTIVENESS AND SIDE EFFECTS OF TREATMENT.
In order to insure that an antiarrhythmic effect will be observed without waiting several months, loading doses are required. A uniform, optimal dosage schedule for administration of Cordarone has not been determined. Because of the food effect on absorption, Cordarone should be administered consistently with regard to meals (see "CLINICAL PHARMACOLOGY"). Individual patient titration is suggested according to the following guidelines:
For life-threatening ventricular arrhythmias, such as ventricular fibrillation or hemodynamically unstable ventricular tachycardia
Close monitoring of the patients is indicated during the loading phase, particularly until risk of recurrent ventricular tachycardia or fibrillation has abated. Because of the serious nature of the arrhythmia and the lack of predictable time course of effect, loading should be performed in a hospital setting. Loading doses of 800 to 1,600 mg/day are required for 1 to 3 weeks (occasionally longer) until initial therapeutic response occurs. (Administration of Cordarone in divided doses with meals is suggested for total daily doses of 1,000 mg or higher, or when gastrointestinal intolerance occurs.) If side effects become excessive, the dose should be reduced. Elimination of recurrence of ventricular fibrillation and tachycardia usually occurs within 1 to 3 weeks, along with reduction in complex and total ventricular ectopic beats.
Since grapefruit juice is known to inhibit CYP3A4-mediated metabolism of oral amiodarone in the intestinal mucosa, resulting in increased plasma levels of amiodarone, grapefruit juice should not be taken during treatment with oral amiodarone (see "PRECAUTIONS, Drug Interactions").
Upon starting Cordarone therapy, an attempt should be made to gradually discontinue prior antiarrhythmic drugs (see section on "Drug Interactions"). When adequate arrhythmia control is achieved, or if side effects become prominent, Cordarone dose should be reduced to 600 to 800 mg/day for one month and then to the maintenance dose, usually 400 mg/day (see "CLINICAL PHARMACOLOGY–Monitoring Effectiveness"). Some patients may require larger maintenance doses, up to 600 mg/day, and some can be controlled on lower doses. Cordarone may be administered as a single daily dose, or in patients with severe gastrointestinal intolerance, as a b.i.d. dose. In each patient, the chronic maintenance dose should be determined according to antiarrhythmic effect as assessed by symptoms, Holter recordings, and/or programmed electrical stimulation and by patient tolerance. Plasma concentrations may be helpful in evaluating nonresponsiveness or unexpectedly severe toxicity (see "CLINICAL PHARMACOLOGY").
The lowest effective dose should be used to prevent the occurrence of side effects. In all instances, the physician must be guided by the severity of the individual patient's arrhythmia and response to therapy.
When dosage adjustments are necessary, the patient should be closely monitored for an extended period of time because of the long and variable half-life of Cordarone and the difficulty in predicting the time required to attain a new steady-state level of drug. Dosage suggestions are summarized below:
Loading Dose (Daily) Adjustment and Maintenance Dose (Daily) Ventricular Arrhythmias 1 to 3 weeks ~1 month usual maintenance 800 to 1,600 mg 600 to 800 mg 400 mg -
Rapamune
Rapamune is to be administered orally once daily, consistently with or without food [see Dosage and Administration (2.5), Clinical Pharmacology (12.3)].
Tablets should not be crushed, chewed or split. Patients unable to take the tablets should be prescribed the solution and instructed in its use.
2.1 General Dosing Guidance for Renal Transplant Patients
The initial dose of Rapamune should be administered as soon as possible after transplantation. It is recommended that Rapamune be taken 4 hours after administration of cyclosporine oral solution (MODIFIED) and or/cyclosporine capsules (MODIFIED) [see Drug Interactions (7.2)].
Frequent Rapamune dose adjustments based on non-steady-state sirolimus concentrations can lead to overdosing or underdosing because sirolimus has a long half-life. Once Rapamune maintenance dose is adjusted, patients should continue on the new maintenance dose for at least 7 to 14 days before further dosage adjustment with concentration monitoring. In most patients, dose adjustments can be based on simple proportion: new Rapamune dose = current dose x (target concentration/current concentration). A loading dose should be considered in addition to a new maintenance dose when it is necessary to increase sirolimus trough concentrations: Rapamune loading dose = 3 x (new maintenance dose - current maintenance dose). The maximum Rapamune dose administered on any day should not exceed 40 mg. If an estimated daily dose exceeds 40 mg due to the addition of a loading dose, the loading dose should be administered over 2 days. Sirolimus trough concentrations should be monitored at least 3 to 4 days after a loading dose(s).
Two milligrams (2 mg) of Rapamune Oral Solution have been demonstrated to be clinically equivalent to 2 mg Rapamune Tablets; hence, are interchangeable on a mg-to-mg basis. However, it is not known if higher doses of Rapamune Oral Solution are clinically equivalent to higher doses of Rapamune Tablets on a mg‑to‑mg basis [see Clinical Pharmacology (12.3)].
2.2 Renal Transplant Patients at Low- to Moderate-Immunologic Risk
Rapamune and Cyclosporine Combination Therapy
For de novo renal transplant patients, it is recommended that Rapamune Oral Solution and Tablets be used initially in a regimen with cyclosporine and corticosteroids. A loading dose of Rapamune equivalent to 3 times the maintenance dose should be given, i.e. a daily maintenance dose of 2 mg should be preceded with a loading dose of 6 mg. Therapeutic drug monitoring should be used to maintain sirolimus drug concentrations within the target-range [see Dosage and Administration (2.5)].
Rapamune Following Cyclosporine Withdrawal
At 2 to 4 months following transplantation, cyclosporine should be progressively discontinued over 4 to 8 weeks, and the Rapamune dose should be adjusted to obtain sirolimus whole blood trough concentrations within the target-range [see Dosage and Administration (2.5)]. Because cyclosporine inhibits the metabolism and transport of sirolimus, sirolimus concentrations may decrease when cyclosporine is discontinued, unless the Rapamune dose is increased [see Clinical Pharmacology (12.3)].
2.3 Renal Transplant Patients at High-Immunologic Risk
In patients with high-immunologic risk, it is recommended that Rapamune be used in combination with cyclosporine and corticosteroids for the first 12 months following transplantation [see Clinical Studies (14.3)]. The safety and efficacy of this combination in high-immunologic risk patients has not been studied beyond the first 12 months. Therefore, after the first 12 months following transplantation, any adjustments to the immunosuppressive regimen should be considered on the basis of the clinical status of the patient.
For patients receiving Rapamune with cyclosporine, Rapamune therapy should be initiated with a loading dose of up to 15 mg on day 1 post-transplantation. Beginning on day 2, an initial maintenance dose of 5 mg/day should be given. A trough level should be obtained between days 5 and 7, and the daily dose of Rapamune should thereafter be adjusted [see Dosage and Administration (2.5)].
The starting dose of cyclosporine should be up to 7 mg/kg/day in divided doses and the dose should subsequently be adjusted to achieve target whole blood trough concentrations [see Dosage and Administration (2.5)]. Prednisone should be administered at a minimum of 5 mg/day.
Antibody induction therapy may be used.
2.4 Dosing in Patients with Lymphangioleiomyomatosis
For patients with lymphangioleiomyomatosis, the initial Rapamune dose should be 2 mg/day. Sirolimus whole blood trough concentrations should be measured in 10–20 days, with dosage adjustment to maintain concentrations between 5–15 ng/mL [see Dosage and Administration (2.5)].
In most patients, dose adjustments can be based on simple proportion: new Rapamune dose = current dose × (target concentration/current concentration). Frequent Rapamune dose adjustments based on non-steady-state sirolimus concentrations can lead to overdosing or under dosing because sirolimus has a long half-life. Once Rapamune maintenance dose is adjusted, patients should continue on the new maintenance dose for at least 7 to 14 days before further dosage adjustment with concentration monitoring. Once a stable dose is achieved, therapeutic drug monitoring should be performed at least every three months.
2.5 Therapeutic Drug Monitoring
Monitoring of sirolimus trough concentrations is recommended for all patients, especially in those patients likely to have altered drug metabolism, in patients ≥ 13 years who weigh less than 40 kg, in patients with hepatic impairment, when a change in the Rapamune dosage form is made, and during concurrent administration of strong CYP3A4 inducers and inhibitors [see Drug Interactions (7)].
Therapeutic drug monitoring should not be the sole basis for adjusting Rapamune therapy. Careful attention should be made to clinical signs/symptoms, tissue biopsy findings, and laboratory parameters.
When used in combination with cyclosporine, sirolimus trough concentrations should be maintained within the target-range [see Clinical Studies (14), Clinical Pharmacology (12.3)]. Following cyclosporine withdrawal in transplant patients at low- to moderate-immunologic risk, the target sirolimus trough concentrations should be 16 to 24 ng/mL for the first year following transplantation. Thereafter, the target sirolimus concentrations should be 12 to 20 ng/mL.
The above recommended 24-hour trough concentration ranges for sirolimus are based on chromatographic methods. Currently in clinical practice, sirolimus whole blood concentrations are being measured by both chromatographic and immunoassay methodologies. Because the measured sirolimus whole blood concentrations depend on the type of assay used, the concentrations obtained by these different methodologies are not interchangeable [see Warnings and Precautions (5.15), Clinical Pharmacology (12.3)]. Adjustments to the targeted range should be made according to the assay utilized to determine sirolimus trough concentrations. Since results are assay and laboratory dependent, and the results may change over time, adjustments to the targeted therapeutic range must be made with a detailed knowledge of the site-specific assay used. Therefore, communication should be maintained with the laboratory performing the assay. A discussion of different assay methods is contained in Clinical Therapeutics, Volume 22, Supplement B, April 2000 [see References (15)].
2.6 Patients with Low Body Weight
The initial dosage in patients ≥ 13 years who weigh less than 40 kg should be adjusted, based on body surface area, to 1 mg/m2/day. The loading dose should be 3 mg/m2.
2.7 Patients with Hepatic Impairment
It is recommended that the maintenance dose of Rapamune be reduced by approximately one third in patients with mild or moderate hepatic impairment and by approximately one half in patients with severe hepatic impairment. It is not necessary to modify the Rapamune loading dose [see Clinical Pharmacology (12.3)].
2.8 Patients with Renal Impairment
Dosage adjustment is not needed in patients with impaired renal function [see Use in Specific Populations (8.7)].
2.9 Instructions for Dilution and Administration of Rapamune Oral Solution
The amber oral dose syringe should be used to withdraw the prescribed amount of Rapamune Oral Solution from the bottle. Empty the correct amount of Rapamune from the syringe into only a glass or plastic container holding at least two (2) ounces (1/4 cup, 60 mL) of water or orange juice. No other liquids, including grapefruit juice, should be used for dilution [see Drug Interactions (7.3), Clinical Pharmacology (12.3)]. Stir vigorously and drink at once. Refill the container with an additional volume [minimum of four (4) ounces (1/2 cup, 120 mL)] of water or orange juice, stir vigorously, and drink at once.
Rapamune Oral Solution contains polysorbate 80, which is known to increase the rate of di‑(2‑ethylhexyl)phthalate (DEHP) extraction from polyvinyl chloride (PVC). This should be considered during the preparation and administration of Rapamune Oral Solution. It is important that these recommendations be followed closely.
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Pristiq Extended-release
2.1 GENERAL INSTRUCTION FOR USE
The recommended dose for PRISTIQ is 50 mg once daily, with or without food. The 50 mg dose is both a starting dose and the therapeutic dose. PRISTIQ should be taken at approximately the same time each day. Tablets must be swallowed whole with fluid and not divided, crushed, chewed, or dissolved.
In clinical studies, doses of 10 mg to 400 mg per day were studied. In clinical studies, doses of 50 mg to 400 mg per day were shown to be effective, although no additional benefit was demonstrated at doses greater than 50 mg per day and adverse reactions and discontinuations were more frequent at higher doses.
The 25 mg per day dose is intended for a gradual reduction in dose when discontinuing treatment. When discontinuing therapy, gradual dose reduction is recommended whenever possible to minimize discontinuation symptoms [see Dosage and Administration (2.4) and Warnings and Precautions (5.9)].
2.2 Special Populations
Patients with renal impairment
The maximum recommended dose in patients with moderate renal impairment (24-hr creatinine clearance [CrCl] = 30 to 50 mL/min, Cockcroft-Gault [C-G]) is 50 mg per day. The maximum recommended dose in patients with severe renal impairment (24-hr CrCl less than 30 mL/min, C-G) or end-stage renal disease (ESRD) is 25 mg every day or 50 mg every other day. Supplemental doses should not be given to patients after dialysis [see Use in Specific Populations (8.6) and Clinical Pharmacology (12.3)].
Patients with hepatic impairment
The recommended dose in patients with moderate to severe hepatic impairment is 50 mg per day. Dose escalation above 100 mg per day is not recommended [see Clinical Pharmacology (12.3)].
2.3 Maintenance/Continuation/Extended Treatment
It is generally agreed that acute episodes of major depressive disorder require several months or longer of sustained pharmacologic therapy. Longer-term efficacy of PRISTIQ (50–400 mg) was established in two maintenance trials [see Clinical Studies (14)]. Patients should be periodically reassessed to determine the need for continued treatment.
2.4 Discontinuing PRISTIQ
Symptoms associated with discontinuation of PRISTIQ, other SNRIs and SSRIs have been reported [see Warnings and Precautions (5.9)]. 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. The 25 mg dose is available for discontinuing therapy.
2.5 Switching Patients From Other Antidepressants to PRISTIQ
Discontinuation symptoms have been reported when switching patients from other antidepressants, including venlafaxine, to PRISTIQ. Tapering of the initial antidepressant may be necessary to minimize discontinuation symptoms.
2.6 Switching Patients 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 PRISTIQ. Conversely, at least 7 days should be allowed after stopping PRISTIQ before starting an MAOI intended to treat psychiatric disorders [see Contraindications (4.2)].
Use of PRISTIQ with other MAOIs such as Linezolid or Methylene Blue
Do not start PRISTIQ 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 (4.2)].
In some cases, a patient already receiving PRISTIQ 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, PRISTIQ should be stopped promptly, and linezolid or intravenous methylene blue can be administered. The patient should be monitored for symptoms of serotonin syndrome for 7 days or until 24 hours after the last dose of linezolid or intravenous methylene blue, whichever comes first. Therapy with PRISTIQ may be resumed 24 hours after the last dose of linezolid or intravenous methylene blue [see Warnings and Precautions (5.2)].
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 PRISTIQ is unclear. The clinician should, nevertheless, be aware of the possibility of emergent symptoms of serotonin syndrome with such use [see Warnings and Precautions (5.2)].
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Anzemet
2.1 Recommended Dosing Schedule
PROTONIX is supplied as delayed-release granules in packets for preparation of oral suspensions or as delayed-release tablets. The recommended dosages are outlined in Table 1.
Table 1: Recommended Dosing Schedule for PROTONIX Indication Dose Frequency * For adult patients who have not healed after 8 weeks of treatment, an additional 8-week course of PROTONIX may be considered. † Controlled studies did not extend beyond 12 months ‡ Dosage regimens should be adjusted to individual patient needs and should continue for as long as clinically indicated. Doses up to 240 mg daily have been administered. Short-Term Treatment of Erosive Esophagitis Associated With GERD Adults 40 mg Once daily for up to 8 weeks* Children (5 years and older) ≥ 15 kg to < 40 kg 20 mg Once daily for up to 8 weeks ≥ 40 kg 40 mg Maintenance of Healing of Erosive Esophagitis Adults 40 mg Once daily† Pathological Hypersecretory Conditions Including Zollinger-Ellison Syndrome Adults 40 mg Twice daily‡2.2 Administration Instructions
Directions for method of administration for each dosage form are presented in Table 2.
Table 2: Administration Instructions Formulation Route Instructions* * Patients should be cautioned that PROTONIX Delayed-Release Tablets and PROTONIX For Delayed-Release Oral Suspension should not be split, chewed, or crushed. Delayed-Release Tablets Oral Swallowed whole, with or without food For Delayed-Release Oral Suspension Oral Administered in 1 teaspoonful of applesauce or apple juice approximately 30 minutes prior to a meal For Delayed-Release Oral Suspension Nasogastric tube See instructions belowPROTONIX Delayed-Release Tablets
PROTONIX Delayed-Release Tablets should be swallowed whole, with or without food in the stomach. If patients are unable to swallow a 40 mg tablet, two 20 mg tablets may be taken. Concomitant administration of antacids does not affect the absorption of PROTONIX Delayed-Release Tablets.
PROTONIX For Delayed-Release Oral Suspension
PROTONIX For Delayed-Release Oral Suspension should only be administered approximately 30 minutes prior to a meal via oral administration in apple juice or applesauce or nasogastric tube in apple juice only. Because proper pH is necessary for stability, do not administer PROTONIX For Delayed-Release Oral Suspension in liquids other than apple juice, or foods other than applesauce.
Do not divide the 40 mg PROTONIX For Delayed-Release Oral Suspension packet to create a 20 mg dosage for pediatric patients who are unable to take the tablet formulation.
PROTONIX For Delayed-Release Oral Suspension - Oral Administration in Applesauce
Open packet. Sprinkle granules on one teaspoonful of applesauce. DO NOT USE OTHER FOODS OR CRUSH OR CHEW THE GRANULES. Take within 10 minutes of preparation. Take sips of water to make sure granules are washed down into the stomach. Repeat water sips as necessary.PROTONIX For Delayed-Release Oral Suspension - Oral Administration in Apple Juice
Open packet. Empty granules into a small cup or teaspoon containing one teaspoon of apple juice. Stir for 5 seconds (granules will not dissolve) and swallow immediately. To make sure that the entire dose is taken, rinse the container once or twice with apple juice to remove any remaining granules. Swallow immediately.PROTONIX For Delayed-Release Oral Suspension - Nasogastric (NG) Tube or Gastrostomy Tube Administration
For patients who have a nasogastric tube or gastrostomy tube in place, PROTONIX For Delayed-Release Oral Suspension can be given as follows:
Remove the plunger from the barrel of a 2 ounce (60 mL) catheter-tip syringe. Discard the plunger. Connect the catheter tip of the syringe to a 16 French (or larger) tube. Hold the syringe attached to the tubing as high as possible while giving PROTONIX For Delayed-Release Oral Suspension to prevent any bending of the tubing. Empty the contents of the packet into the barrel of the syringe. Add 10 mL (2 teaspoonfuls) of apple juice and gently tap and/or shake the barrel of the syringe to help rinse the syringe and tube. Repeat at least twice more using the same amount of apple juice (10 mL or 2 teaspoonfuls) each time. No granules should remain in the syringe. -
Torisel
2.1 Advanced Renal Cell Carcinoma
The recommended dose of TORISEL for advanced renal cell carcinoma is 25 mg infused over a 30 – 60 minute period once a week.
Treatment should continue until disease progression or unacceptable toxicity occurs.
2.2 Premedication
Patients should receive prophylactic intravenous diphenhydramine 25 to 50 mg (or similar antihistamine) approximately 30 minutes before the start of each dose of TORISEL [see Warnings and Precautions (5.1)].
2.3 Dosage Interruption/Adjustment
TORISEL should be held for absolute neutrophil count (ANC) <1,000/mm3, platelet count <75,000/mm3, or NCI CTCAE grade 3 or greater adverse reactions. Once toxicities have resolved to grade 2 or less, TORISEL may be restarted with the dose reduced by 5 mg/week to a dose no lower than 15 mg/week.
2.4 Dose Modification Guidelines
Hepatic Impairment: Use caution when treating patients with hepatic impairment. If TORISEL must be given in patients with mild hepatic impairment (bilirubin >1 – 1.5×ULN or AST >ULN but bilirubin ≤ULN), reduce the dose of TORISEL to 15 mg/week. TORISEL is contraindicated in patients with bilirubin >1.5×ULN [see Contraindications (4), Warnings and Precautions (5.2) and Use in Specific Populations (8.7)].
Concomitant Strong CYP3A4 Inhibitors: The concomitant use of strong CYP3A4 inhibitors should be avoided (e.g. ketoconazole, itraconazole, clarithromycin, atazanavir, indinavir, nefazodone, nelfinavir, ritonavir, saquinavir, telithromycin, and voriconazole). Grapefruit juice may also increase plasma concentrations of sirolimus (a major metabolite of temsirolimus) and should be avoided. If patients must be co-administered a strong CYP3A4 inhibitor, based on pharmacokinetic studies, a TORISEL dose reduction to 12.5 mg/week should be considered. This dose of TORISEL is predicted to adjust the AUC to the range observed without inhibitors. However, there are no clinical data with this dose adjustment in patients receiving strong CYP3A4 inhibitors. If the strong inhibitor is discontinued, a washout period of approximately 1 week should be allowed before the TORISEL dose is adjusted back to the dose used prior to initiation of the strong CYP3A4 inhibitor [see Warnings and Precautions (5.11) and Drug Interactions (7.2)].
Concomitant Strong CYP3A4 Inducers: The use of concomitant strong CYP3A4 inducers should be avoided (e.g. dexamethasone, phenytoin, carbamazepine, rifampin, rifabutin, rifampacin, phenobarbital). If patients must be co-administered a strong CYP3A4 inducer, based on pharmacokinetic studies, a TORISEL dose increase from 25 mg/week up to 50 mg/week should be considered. This dose of TORISEL is predicted to adjust the AUC to the range observed without inducers. However, there are no clinical data with this dose adjustment in patients receiving strong CYP3A4 inducers. If the strong inducer is discontinued the temsirolimus dose should be returned to the dose used prior to initiation of the strong CYP3A4 inducer [see Warnings and Precautions (5.11) and Drug Interactions (7.1)].
2.5 Instructions for Preparation
TORISEL must be stored under refrigeration at 2°–8°C (36°–46°F) and protected from light. During handling and preparation of admixtures, TORISEL should be protected from excessive room light and sunlight. Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration, whenever solution and container permit.
In order to minimize the patient exposure to the plasticizer DEHP (di-2-ethylhexyl phthalate), which may be leached from PVC infusion bags or sets, the final TORISEL dilution for infusion should be stored in bottles (glass, polypropylene) or plastic bags (polypropylene, polyolefin) and administered through polyethylene-lined administration sets.
TORISEL 25 mg/mL injection must be diluted with the supplied diluent before further dilution in 0.9% Sodium Chloride Injection, USP.
Please note that both the TORISEL injection and diluent vials contain an overfill to ensure the recommended volume can be withdrawn.
Follow this two-step dilution process in an aseptic manner.
Step 1:
DILUTION OF TORISEL INJECTION 25 MG/ML WITH SUPPLIED DILUENT
Each Vial of Torisel (temsirolimus) must first be mixed with 1.8 mL of the enclosed diluent. The resultant solution contains 30 mg/3 mL (10 mg/mL). Mix well by inversion of the vial. Allow sufficient time for the air bubbles to subside. The solution should be clear to slightly turbid, colorless to light-yellow solution, essentially free from visual particulates.The concentrate-diluent mixture is stable below 25ºC for up to 24 hours.
Step 2:
DILUTION OF CONCENTRATE-DILUENT MIXTURE WITH 0.9% SODIUM CHLORIDE INJECTION, USP
Withdraw precisely the required amount of concentrate-diluent mixture containing temsirolimus 10 mg/mL as prepared in Step 1 from the vial (i.e., 2.5 mL for a temsirolimus dose of 25 mg) and further dilute into an infusion bag containing 250 mL of 0.9% Sodium Chloride Injection, USP. Mix by inversion of the bag or bottle, avoiding excessive shaking, as this may cause foaming.The resulting solution should be inspected visually for particulate matter and discoloration prior to administration. The admixture of TORISEL in 0.9% Sodium Chloride Injection, USP should be protected from excessive room light and sunlight.
2.6 Administration
Administration of the final diluted solution should be completed within six hours from the time that TORISEL is first added to 0.9% Solution Chloride Injection, USP. TORISEL is infused over a 30- to 60-minute period once weekly. The use of an infusion pump is the preferred method of administration to ensure accurate delivery of the product. Appropriate administration materials should be composed of glass, polyolefin, or polyethylene to avoid excessive loss of product and diethylhexylpthalate (DEHP) extraction. The administration materials should consist of non-DEHP, non-polyvinylchloride (PVC) tubing with appropriate filter. In the case when a PVC administration set has to be used, it should not contain DEHP. An in-line polyethersulfone filter with a pore size of not greater than 5 microns is recommended for administration to avoid the possibility of particles bigger than 5 microns being infused. If the administration set available does not have an in-line filter incorporated, a polyethersulfone filter should be added at the set (i.e., an end-filter) before the admixture reaches the vein of the patient. Different end-filters can be used, ranging in filter pore size from 0.2 microns up to 5 microns. The use of both an in-line and end-filter is not recommended. TORISEL, when diluted, contains polysorbate 80, which is known to increase the rate of DEHP extraction from PVC. This should be considered during the preparation and administration of TORISEL, including storage time elapsed when in direct contact with PVC following constitution.Compatibilities and Incompatibilities
Undiluted TORISEL injection should not be added directly to aqueous infusion solutions. Direct addition of TORISEL injection to aqueous solutions will result in precipitation of drug. Always combine TORISEL injection with DILUENT for TORISEL before adding to infusion solutions. It is recommended that TORISEL be administered in 0.9% Sodium Chloride Injection after combining with diluent. The stability of TORISEL in other infusion solutions has not been evaluated. Addition of other drugs or nutritional agents to admixtures of TORISEL in 0.9% Sodium Chloride Injection has not been evaluated and should be avoided. Temsirolimus is degraded by both acids and bases, and thus combinations of temsirolimus with agents capable of modifying solution pH should be avoided.
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