Amoxicillin/clavulanate Potassium
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Questions & Answers
Side Effects & Adverse Reactions
SERIOUS AND OCCASIONALLY FATAL HYPERSENSITIVITY (ANAPHYLACTIC) REACTIONS HAVE BEEN REPORTED IN PATIENTS ON PENICILLIN THERAPY. THESE REACTIONS ARE MORE LIKELY TO OCCUR IN INDIVIDUALS WITH A HISTORY OF PENICILLIN HYPERSENSITIVITY AND/OR A HISTORY OF SENSITIVITY TO MULTIPLE ALLERGENS. THERE HAVE BEEN REPORTS OF INDIVIDUALS WITH A HISTORY OF PENICILLIN HYPERSENSITIVITY WHO HAVE EXPERIENCED SEVERE REACTIONS WHEN TREATED WITH CEPHALOSPORINS. BEFORE INITIATING THERAPY WITH AMOXICILLIN AND CLAVULANATE POTASSIUM TABLETS, CAREFUL INQUIRY SHOULD BE MADE CONCERNING PREVIOUS HYPERSENSITIVITY REACTIONS TO PENICILLINS, CEPHALOSPORINS, OR OTHER ALLERGENS. IF AN ALLERGIC REACTION OCCURS, AMOXICILLIN AND CLAVULANATE POTASSIUM TABLETS SHOULD BE DISCONTINUED AND THE APPROPRIATE THERAPY INSTITUTED. SERIOUS ANAPHYLACTIC REACTIONS REQUIRE IMMEDIATE EMERGENCY TREATMENT WITH EPINEPHRINE. OXYGEN, INTRAVENOUS STEROIDS, AND AIRWAY MANAGEMENT, INCLUDING INTUBATION, SHOULD ALSO BE ADMINISTERED AS INDICATED.
Clostridium difficile associated diarrhea (CDAD) has been reported with use of nearly all antibacterial agents, including Amoxicillin and Clavulanate Potassium Tablets, and may range in severity from mild diarrhea to fatal colitis. Treatment with antibacterial agents alters the normal flora of the colon leading to overgrowth of C. difficile.
C. difficile produces toxins A and B which contribute to the development of CDAD. Hypertoxin producing strains of C. difficile cause increased morbidity and mortality, as these infections can be refractory to antimicrobial therapy and may require colectomy. CDAD must be considered in all patients who present with diarrhea following antibiotic use. Careful medical history is necessary since CDAD has been reported to occur over two months after the administration of antibacterial agents.
If CDAD is suspected or confirmed, ongoing antibiotic use not directed against C. difficile may need to be discontinued. Appropriate fluid and electrolyte management, protein supplementation, antibiotic treatment of C. difficile, and surgical evaluation should be instituted as clinically indicated.
Amoxicillin and Clavulanate Potassium Tablets should be used with caution in patients with evidence of hepatic dysfunction. Hepatic toxicity associated with the use of Amoxicillin and Clavulanate Potassium Tablets is usually reversible. On rare occasions, deaths have been reported (less than 1 death reported per estimated 4 million prescriptions worldwide). These have generally been cases associated with serious underlying diseases or concomitant medications. (See CONTRAINDICATIONS and ADVERSE REACTIONS-Liver)
Legal Issues
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FDA Safety Alerts
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Manufacturer Warnings
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FDA Labeling Changes
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Uses
Amoxicillin and Clavulanate Potassium Tablets are indicated in the treatment of infections caused by susceptible strains of the designated organisms in the conditions listed below:
Lower Respiratory Tract Infections - caused by β-lactamase-producing strains of H. influenzae and M. catarrhalis.
Otitis Media - caused by β-lactamase-producing strains of H. influenzae and M. catarrhalis.
Sinusitis - caused by β-lactamase-producing strains of H. influenzae and M. catarrhalis.
Skin and Skin Structure Infections - caused by β-lactamase-producing strains of S. aureus, E. coli, and Klebsiella spp.
Urinary Tract Infections - caused by β-lactamase-producing strains of E. coli, Klebsiella spp., and Enterobacter spp.
While Amoxicillin and Clavulanate Potassium Tablets are indicated only for the conditions listed above, infections caused by ampicillin-susceptible organisms are also amenable to treatment with Amoxicillin and Clavulanate Potassium Tablets due to their amoxicillin content; therefore, mixed infections caused by ampicillin-susceptible organisms and β-lactamase-producing organisms susceptible to Amoxicillin and Clavulanate Potassium Tablets should not require the addition of another antibiotic. Because amoxicillin has greater in vitro activity against S. pneumoniae than does ampicillin or penicillin, the majority of S. pneumoniae strains with intermediate susceptibility to ampicillin or penicillin are fully susceptible to amoxicillin and Amoxicillin and Clavulanate Potassium Tablets. (See Microbiology)
To reduce the development of drug-resistant bacteria and maintain the effectiveness of Amoxicillin and Clavulanate Potassium Tablets and other antibacterial drugs, Amoxicillin and Clavulanate Potassium Tablets should be used only to treat or prevent infections that are proven or strongly suspected to be caused by susceptible bacteria. When culture and susceptibility information are available, they should be considered in selecting or modifying antibacterial therapy. In the absence of such data, local epidemiology and susceptibility patterns may contribute to the empiric selection of therapy.
Bacteriological studies, to determine the causative organisms and their susceptibility to Amoxicillin and Clavulanate Potassium Tablets, should be performed together with any indicated surgical procedures.
History
There is currently no drug history available for this drug.
Other Information
PRESCRIBING
INFORMATION
To reduce the development of drug-resistant bacteria and maintain the effectiveness of Amoxicillin and Clavulanate Potassium Tablets, USP and other antibacterial drugs, Amoxicillin and Clavulanate Potassium Tablets, USP should be used only to treat or prevent infections that are proven or strongly suspected to be caused by bacteria.
DESCRIPTIONAmoxicillin and Clavulanate Potassium Tablet USP is an oral antibacterial combination consisting of the semisynthetic antibiotic amoxicillin and the β-lactamase inhibitor, clavulanate potassium (the potassium salt of clavulanic acid). Amoxicillin is an analog of ampicillin, derived from the basic penicillin nucleus, 6-aminopenicillanic acid. The amoxicillin molecular formula is C16H19N3O5S·3H2O and the molecular weight is 419.46. Chemically, amoxicillin is (2S, 5R, 6R)-6-[(R)-(-)-2-Amino-2-(p-hydroxyphenyl)acetamido]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid trihydrate.
Clavulanic acid is produced by the fermentation of Streptomyces clavuligerus. It is a β-lactam structurally related to the penicillins and possesses the ability to inactivate a wide variety of β-lactamases by blocking the active sites of these enzymes. Clavulanic acid is particularly active against the clinically important plasmid mediated β-lactamases frequently responsible for transferred drug resistance to penicillins and cephalosporins. The clavulanate potassium molecular formula is C8H8KNO5 and the molecular weight is 237.25. Chemically, clavulanate potassium is potassium (Z)-(2R,5R )-3-(2-hydroxyethylidene)-7-oxo-4-oxa-1-azabicyclo[3.2.0]-heptane-2-carboxylate.
Each film coated tablet contains 500 mg amoxicillin as the trihydrate and 125 mg clavulanic acid as the potassium salt or 875 mg amoxicillin as the trihydrate and 125 mg clavulanic acid as the potassium salt. In addition, each 500 mg/125 mg and 875 mg/125 mg amoxicillin and clavulanate potassium tablet contains 0.63 mEq potassium.
Inactive Ingredients: Colloidal silicon dioxide, croscarmellose sodium dried, crospovidone dried, ethylcellulose, hydroxypropyl cellulose, magnesium stearate, microcrystalline cellulose dried, polysorbate 80, talc, titanium dioxide, triethyl citrat.
Sources
Amoxicillin/clavulanate Potassium Manufacturers
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Bryant Ranch Prepack
![Amoxicillin/clavulanate Potassium Tablet [Bryant Ranch Prepack]](/wp-content/themes/bootstrap/assets/img/loading2.gif)
Amoxicillin/clavulanate Potassium | Bryant Ranch Prepack
Since both the 250 mg/125 mg and 500 mg/125 mg tablets of Amoxicillin and Clavulanate Potassium contain the same amount of clavulanic acid (125 mg, as the potassium salt), two 250 mg/125 mg tablets of Amoxicillin and Clavulanate Potassium are not equivalent to one 500 mg/125 mg tablet of Amoxicillin and Clavulanate Potassium; therefore, two 250 mg/125 mg tablets of Amoxicillin and Clavulanate Potassium should not be substituted for one 500 mg/125 mg tablet of Amoxicillin and Clavulanate Potassium.
Dosage
Adults: The usual adult dose is one 500 mg/125 mg tablet of Amoxicillin and Clavulanate Potassium every 12 hours or one 250 mg/125 mg tablet of Amoxicillin and Clavulanate Potassium every 8 hours. For more severe infections and infections of the respiratory tract, the dose should be one 875 mg/125 mg tablet of Amoxicillin and Clavulanate Potassium every 12 hours or one 500 mg/125 mg tablet of Amoxicillin and Clavulanate Potassium every 8 hours.Patients with impaired renal function do not generally require a reduction in dose unless the impairment is severe. Severely impaired patients with a glomerular filtration rate of LT 30 mL/min. should not receive the 875 mg/125 mg tablet. Patients with a glomerular filtration rate of 10 to 30 mL/min. should receive 500 mg/125 mg or 250 mg/125 mg every 12 hours, depending on the severity of the infection. Patients with a less than 10 mL/min. glomerular filtration rate should receive 500 mg/125 mg or 250 mg/125 mg every 24 hours, depending on severity of the infection.
Hemodialysis patients should receive 500 mg/125 mg or 250 mg/125 mg every 24 hours, depending on severity of the infection. They should receive an additional dose both during and at the end of dialysis.
Hepatically impaired patients should be dosed with caution and hepatic function monitored at regular intervals. (See WARNINGS)
Pediatric Patients: Pediatric patients weighing 40 kg or more should be dosed according to the adult recommendations.
Due to the different amoxicillin to clavulanic acid ratios in the 250 mg/125 mg tablet of Amoxicillin and Clavulanate Potassium (250/125) versus the 250 mg/62.5 mg chewable tablet of Amoxicillin and Clavulanate Potassium (250/62.5), the 250 mg/125 mg tablet of Amoxicillin and Clavulanate Potassium should not be used until the pediatric patient weighs at least 40 kg or more.
Administration
Amoxicillin and Clavulanate Potassium Tablets may be taken without regard to meals; however, absorption of clavulanate potassium is enhanced when Amoxicillin and Clavulanate Potassium Tablets are administered at the start of a meal. To minimize the potential for gastrointestinal intolerance, Amoxicillin and Clavulanate Potassium Tablets should be taken at the start of a meal.
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