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FDA Drug information

AMOXICILLIN AND CLAVULANATE POTASSIUM

Read time: 3 mins
Marketing start date: 18 Nov 2024

Summary of product characteristics


Adverse Reactions

6 ADVERSE REACTIONS The following are discussed in more detail in other sections of the labeling: • Anaphylactic reactions [see Warnings and Precautions (5.1) ] • Hepatic Dysfunction [see Warnings and Precautions (5.2) ] • CDAD [see Warnings and Precautions (5.3) ] The most frequently reported adverse effects were diarrhea/loose stools (9%), nausea (3%), skin rashes and urticaria (3%), vomiting (1%) and vaginitis (1%) ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Micro Labs USA, Inc. at 1-855-839-8195 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch . 6.1 Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice. The most frequently reported adverse reactions were diarrhea/loose stools (9%), nausea (3%), skin rashes and urticaria (3%), vomiting (1%) and vaginitis (1%). Less than 3% of patients discontinued therapy because of drug-related adverse reactions. The overall incidence of adverse reactions, and in particular diarrhea, increased with the higher recommended dose. Other less frequently reported adverse reactions (<1%) include: Abdominal discomfort, flatulence, and headache. In pediatric patients (aged 2 months to 12 years), 1 US/Canadian clinical trial was conducted which compared 45/6.4 mg/kg/day (divided every 12 hours) of amoxicillin and clavulanate potassium for 10 days versus 40/10 mg/kg/day (divided every 8 hours) of amoxicillin and clavulanate potassium for 10 days in the treatment of acute otitis media. A total of 575 patients were enrolled, and only the suspension formulations were used in this trial. Overall, the adverse reactions seen were comparable to that noted above; however, there were differences in the rates of diarrhea, skin rashes/urticaria, and diaper area rashes. [See Clinical Studies (14.2) ] 6.2 Postmarketing Experience In addition to adverse reactions reported from clinical trials, the following have been identified during postmarketing use of amoxicillin and clavulanate potassium. Because they are reported voluntarily from a population of unknown size, estimates of frequency cannot be made. These events have been chosen for inclusion due to a combination of their seriousness, frequency of reporting, or potential causal connection to amoxicillin and clavulanate potassium. Gastrointestinal: Indigestion, gastritis, stomatitis, glossitis, black “hairy” tongue, mucocutaneous candidiasis, enterocolitis, and hemorrhagic/pseudomembranous colitis. Onset of pseudomembranous colitis symptoms may occur during or after antibiotic treatment. [see Warnings and Precautions (5.3) ] Hypersensitivity Reactions: Pruritus, angioedema, serum sickness–like reactions (urticaria or skin rash accompanied by arthritis, arthralgia, myalgia, and frequently fever), erythema multiforme, Stevens-Johnson syndrome, acute generalized exanthematous pustulosis, hypersensitivity vasculitis, and cases of exfoliative dermatitis (including toxic epidermal necrolysis) have been reported. [see Warnings and Precautions (5.1) ] Liver: Hepatic dysfunction, including hepatitis and cholestatic jaundice, increases in serum transaminases (AST and/or ALT), serum bilirubin, and/or alkaline phosphatase, has been reported with amoxicillin and clavulanate potassium. It has been reported more commonly in the elderly, in males, or in patients on prolonged treatment. The histologic findings on liver biopsy have consisted of predominantly cholestatic, hepatocellular, or mixed cholestatic-hepatocellular changes. The onset of signs/symptoms of hepatic dysfunction may occur during or several weeks after therapy has been discontinued. The hepatic dysfunction, which may be severe, is usually reversible. Deaths have been reported. [see Contraindications (4.2) , Warnings and Precautions (5.2) ] Renal: Interstitial nephritis, hematuria, and crystalluria have been reported. [see Overdosage (10) ] Hemic and Lymphatic Systems: Anemia, including hemolytic anemia, thrombocytopenia, thrombocytopenic purpura, eosinophilia, leukopenia, and agranulocytosis have been reported. These reactions are usually reversible on discontinuation of therapy and are believed to be hypersensitivity phenomena. Thrombocytosis was noted in less than 1% of the patients treated with amoxicillin and clavulanate potassium. There have been reports of increased prothrombin time in patients receiving amoxicillin and clavulanate potassium and anticoagulant therapy concomitantly. [see Drug Interactions (7.2) ] Central Nervous System: Agitation, anxiety, behavioral changes, confusion, convulsions, dizziness, insomnia, and reversible hyperactivity have been reported. Miscellaneous: Tooth discoloration (brown, yellow, or gray staining) has been reported. Most reports occurred in pediatric patients. Discoloration was reduced or eliminated with brushing or dental cleaning in most cases.

Contraindications

4 CONTRAINDICATIONS • History of a serious hypersensitivity reaction (e.g., anaphylaxis or Stevens-Johnson syndrome) to amoxicillin and clavulanate potassium or to other beta-lactams (e.g., penicillins or cephalosporins) ( 4 ) • History of cholestatic jaundice/hepatic dysfunction associated with amoxicillin and clavulanate potassium. ( 4 ) 4.1 Serious Hypersensitivity Reactions Amoxicillin and clavulanate potassium is contraindicated in patients with a history of serious hypersensitivity reactions (e.g., anaphylaxis or Stevens-Johnson syndrome) to amoxicillin, clavulanate or to other beta-lactam antibacterial drugs (e.g., penicillins and cephalosporins). 4.2 Cholestatic Jaundice/Hepatic Dysfunction Amoxicillin and clavulanate potassium is contraindicated in patients with a previous history of cholestatic jaundice/hepatic dysfunction associated with amoxicillin and clavulanate potassium.

Description

11 DESCRIPTION Amoxicillin and clavulanate potassium tablets, USP is an oral antibacterial combination consisting of amoxicillin and the β-lactamase inhibitor, clavulanate potassium (the potassium salt of clavulanic acid). Amoxicillin, USP is an analog of ampicillin, derived from the basic penicillin nucleus, 6-aminopenicillanic acid. Chemically, amoxicillin, USP 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 and may be represented structurally as: C 16 H 19 N 3 O 5 S•3H 2 O M.W. 419.45 Clavulanic acid is produced by the fermentation of Streptomyces clavuligerus. It is a beta-lactam structurally related to the penicillins and possesses the ability to inactivate some beta-lactamases by blocking the active sites of these enzymes. The clavulanate potassium molecular formula is C 8 H 8 KNO 5 , and the molecular weight is 237.25. Chemically, clavulanate potassium, USP is potassium ( Z )-(2 R ,5 R )-3-(2-hydroxyethylidene)-7-oxo-4-oxa-1-azabicyclo[3.2.0]-heptane-2-carboxylate, and may be represented structurally as: C 8 H 8 KNO 5 M.W. 237.25 Each tablet contains 250 mg, 500 mg or 875 mg amoxicillin, USP as the trihydrate and 125 mg clavulanic acid as the potassium salt. Each Amoxicillin and Clavulanate Potassium Tablet USP contains 0.63 mEq potassium. Inactive Ingredients: colloidal silicon dioxide, ethylcellulose, hypromellose, magnesium stearate, microcrystalline cellulose, polyethylene glycol, sodium starch glycolate, talc and titanium dioxide. Meets USP Dissolution Test 1 amoxicillin structure clavulanate potassium structure

Dosage And Administration

2 DOSAGE AND ADMINISTRATION Amoxicillin and clavulanate potassium may be taken without regard to meals; however, absorption of clavulanate potassium is enhanced when amoxicillin and clavulanate potassium is administered at the start of a meal. To minimize the potential for gastrointestinal intolerance, amoxicillin and clavulanate potassium should be taken at the start of a meal. • Adults and Pediatric Patients > 40 kg: 500 mg/125 mg or 875 mg/125 mg every 12 hours or 250 mg/125 mg or 500 mg/125 mg every 8 hours. ( 2.1 , 2.2 ) • Pediatric patients aged 12 weeks (3 months) and older: 25 to 45 mg/kg/day every 12 hours or 20 to 40 mg/kg/day every 8 hours, up to the adult dose. ( 2.2 ) 2.1 Adults The usual adult dose is one 500 mg/125 mg amoxicillin and clavulanate potassium tablet every 12 hours or one 250 mg/125 mg amoxicillin and clavulanate potassium tablet every 8 hours. For more severe infections and infections of the respiratory tract, the dose should be one 875 mg/125 mg amoxicillin and clavulanate potassium tablet every 12 hours or one 500 mg/125 mg amoxicillin and clavulanate potassium tablet every 8 hours. Adults who have difficulty swallowing may be given the 125 mg/31.25 mg per 5 mL or 250 mg/62.5 mg per 5 mL suspension in place of the 500 mg/125 mg tablet. The 200 mg/28.5 mg per 5 mL suspension or the 400 mg/57 mg per 5 mL suspension may be used in place of the 875 mg/125 mg tablet. Two 250 mg/125 mg amoxicillin and clavulanate potassium tablets should not be substituted for one 500 mg/125 mg amoxicillin and clavulanate potassium tablet. Since both the 250 mg/125 mg and 500 mg/125 mg amoxicillin and clavulanate potassium tablets contain the same amount of clavulanic acid (125 mg, as the potassium salt), two 250 mg/125 mg tablets are not equivalent to one 500 mg/125 mg amoxicillin and clavulanate potassium tablet. The 250 mg/125 mg amoxicillin and clavulanate potassium tablet and the 250 mg/62.5 mg chewable tablet should not be substituted for each other, as they are not interchangeable. The 250 mg/125 mg amoxicillin and clavulanate potassium tablet and the 250 mg/62.5 mg chewable tablet do not contain the same amount of clavulanic acid (as the potassium salt). The 250 mg/125 mg amoxicillin and clavulanate potassium tablet contains 125 mg of clavulanic acid, whereas the 250 mg/62.5 mg chewable tablet contains 62.5 mg of clavulanic acid. 2.2 Pediatric Patients Based on the amoxicillin component, amoxicillin and clavulanate potassium should be dosed as follows: Neonates and Infants Aged <12 weeks (<3 months): The recommended dose of amoxicillin and clavulanate potassium tablet is 30 mg/kg/day divided every 12 hours, based on the amoxicillin component. Experience with the 200 mg/5 mL formulation in this age group is limited, and thus, use of the 125 mg/5 mL oral suspension is recommended. Patients Aged 12 weeks (3 months) and Older: See dosing regimens provided in Table 1. The every 12 hour regimen is recommended as it is associated with significantly less diarrhea [see Clinical Studies ( 14.2 )] . Table 1: Dosing in Patients Aged 12 weeks (3 months) and Older INFECTION DOSING REGIMEN Every 12 hours Every 12 hours 200 mg/5 mL or 400 mg/5 mL oral suspension a 125 mg/5 mL or 250 mg/5 mL oral suspension a Otitis media b , sinusitis, lower respiratory tract infections, and more severe infections 45 mg/kg/day every 12 hours 40 mg/kg/day every 8 hours Less severe infections 25 mg/kg/day every 12 hours 20 mg/kg/day every 8 hours a Each strength of suspension of amoxicillin and clavulanate potassium is available as a chewable tablet for use by older children. b Duration of therapy studied and recommended for acute otitis media is 10 days. Patients Weighing 40 kg or More: Pediatric patients weighing 40 kg or more should be dosed according to adult recommendations. The 250 mg/125 mg amoxicillin and clavulanate potassium tablets should not be used until the child weighs at least 40 kg, due to the different amoxicillin to clavulanic acid ratios in the 250 mg/125 mg amoxicillin and clavulanate potassium tablets (250/125) versus the 250 mg/62.5 mg amoxicillin and clavulanate potassium tablets (Chewable). 2.3 Patients with Renal Impairment Patients with impaired renal function do not generally require a reduction in dose unless the impairment is severe. Renal impairment patients with a glomerular filtration rate of <30 mL/min should not receive the 875 mg/125 mg dose. 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 glomerular filtration rate less than 10 mL/min 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.

Indications And Usage

1 INDICATIONS AND USAGE 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 should be used only to treat 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. Amoxicillin and clavulanate potassium tablets USP is a combination penicillin-class antibacterial and beta-lactamase inhibitor indicated in the treatment of infections due to susceptible isolates of the designated bacteria in the conditions listed below*: Amoxicillin and clavulanate potassium tablets USP are combination penicillin-class antibacterial and beta-lactamase inhibitor indicated for treatment of the following: Lower respiratory tract infections ( 1.1 ) Acute bacterial otitis media ( 1.2 ) Sinusitis ( 1.3 ) Skin and skin structure infections ( 1.4 ) Urinary tract infections ( 1.5 ) 1.1 Lower Respiratory Tract Infections – caused by beta-lactamase–producing isolates of Haemophilus influenzae and Moraxella catarrhalis . 1.2 Acute Bacterial Otitis Media – caused by beta-lactamase–producing isolates of H. influenzae and M. catarrhalis . 1.3 Sinusitis – caused by beta-lactamase–producing isolates of H. influenzae and M. catarrhalis . 1.4 Skin and Skin Structure Infections – caused by beta-lactamase–producing isolates of Staphylococcus aureus , Escherichia coli , and Klebsiella species. 1.5 Urinary Tract Infections – caused by beta-lactamase–producing isolates of E. coli , Klebsiella species, and Enterobacter species. 1.6 Limitations of Use – When susceptibility test results show susceptibility to amoxicillin, USP, indicating no beta-lactamase production, amoxicillin and clavulanate potassium tablets USP should not be used.

Overdosage

10 OVERDOSAGE In case of overdosage, discontinue medication, treat symptomatically, and institute supportive measures as required. A prospective study of 51 pediatric patients at a poison-control center suggested that overdosages of less than 250 mg/kg of amoxicillin are not associated with significant clinical symptoms 1 . Interstitial nephritis resulting in oliguric renal failure has been reported in patients after overdosage with amoxicillin and clavulanate potassium. Crystalluria, in some cases leading to renal failure, has also been reported after amoxicillin and clavulanate potassium overdosage in adult and pediatric patients. In case of overdosage, adequate fluid intake and diuresis should be maintained to reduce the risk of amoxicillin and clavulanate potassium crystalluria. Renal impairment appears to be reversible with cessation of drug administration. High blood levels may occur more readily in patients with impaired renal function because of decreased renal clearance of amoxicillin and clavulanate potassium. Amoxicillin and clavulanate potassium may be removed from circulation by hemodialysis. [see Dosage and Administration (2.3) ]

Drug Interactions

7 DRUG INTERACTIONS • Co-administration with probenecid is not recommended. ( 7.1 ) • Concomitant use of amoxicillin and clavulanate potassium and oral anticoagulants may increase the prolongation of prothrombin time. ( 7.2 ) • Coadministration with allopurinol increases the risk of rash. ( 7.3 ) • Amoxicillin and clavulanate potassium may reduce efficacy of oral contraceptives. ( 7.4 ) 7.1 Probenecid Probenecid decreases the renal tubular secretion of amoxicillin but does not delay renal excretion of clavulanic acid. Concurrent use with amoxicillin and clavulanate potassium may result in increased and prolonged blood concentrations of amoxicillin. Coadministration of probenecid is not recommended. 7.2 Oral Anticoagulants Abnormal prolongation of prothrombin time (increased international normalized ratio [INR]) has been reported in patients receiving amoxicillin and oral anticoagulants. Appropriate monitoring should be undertaken when anticoagulants are prescribed concurrently with amoxicillin and clavulanate potassium. Adjustments in the dose of oral anticoagulants may be necessary to maintain the desired level of anticoagulation. 7.3 Allopurinol The concurrent administration of allopurinol and amoxicillin increases the incidence of rashes in patients receiving both drugs as compared to patients receiving amoxicillin alone. It is not known whether this potentiation of amoxicillin rashes is due to allopurinol or the hyperuricemia present in these patients. 7.4 Oral Contraceptives Amoxicillin and clavulanate potassium may affect intestinal flora, leading to lower estrogen reabsorption and reduced efficacy of combined oral estrogen/progesterone contraceptives. 7.5 Effects on Laboratory Tests High urine concentrations of amoxicillin may result in false-positive reactions when testing for the presence of glucose in urine using CLINITEST ® , Benedict’s Solution, or Fehling’s Solution. Since this effect may also occur with amoxicillin and clavulanate potassium, it is recommended that glucose tests based on enzymatic glucose oxidase reactions be used. Following administration of amoxicillin to pregnant women, a transient decrease in plasma concentration of total conjugated estriol, estriol-glucuronide, conjugated estrone, and estradiol has been noted.

Clinical Pharmacology

12 CLINICAL PHARMACOLOGY 12.1 Mechanism of Action Amoxicillin and clavulanate potassium is an antibacterial drug. [see Microbiology 12.4 ] 12.3 Pharmacokinetics Mean amoxicillin and clavulanate potassium pharmacokinetic parameters in normal adults following administration of amoxicillin and clavulanate potassium tablets are shown in Table 3 and following administration of amoxicillin and clavulanate potassium for oral suspension and chewable tablets are shown in Table 4 . Table 3: Mean (±S.D.) Amoxicillin and Clavulanate Potassium Pharmacokinetic Parameters ab With Amoxicillin and Clavulanate Potassium Tablets Dose and Regimen C max (mcg/mL) AUC 0 to 24 (mcg*h/mL) Amoxicillin and Clavulanate Potassium Amoxicillin Clavulanate Potassium Amoxicillin Clavulanate Potassium 250 mg/125 mg every 8 hours 3.3 ± 1.12 1.5 ± 0.70 26.7 ± 4.56 12.6 ± 3.25 500 mg/125 mg every 12 hours 6.5 ± 1.41 1.8 ± 0.61 33.4 ± 6.76 8.6 ± 1.95 500 mg/125 mg every 8 hours 7.2 ± 2.26 2.4 ± 0.83 53.4 ± 8.87 15.7 ± 3.86 875 mg/125 mg every 12 hours 11.6 ± 2.78 2.2 ± 0.99 53.5 ± 12.31 10.2 ± 3.04 a Mean (± standard deviation) values of 14 normal adults (N=15 for clavulanate potassium in the low-dose regimens). Peak concentrations occurred approximately 1.5 hours after the dose. b Amoxicillin and clavulanate potassium administered at the start of a light meal. Table 4: Mean (±S.D.) Amoxicillin and Clavulanate Potassium Pharmacokinetic Parameters a,b with Amoxicillin and Clavulanate Potassium Powder for Oral Suspension and Chewable Tablets Dose C max (mcg/mL) AUC 0 to 24 (mcg*h/mL) Amoxicillin/Clavulanate potassium Amoxicillin Clavulanate potassium Amoxicillin Clavulanate potassium 400/57 mg (5 mL of suspension) 6.94 ± 1.24 1.10 ± 0.42 17.29 ± 2.28 2.34 ± 0.94 400/57 mg (1 chewable tablet) 6.67 ± 1.37 1.03 ± 0.33 17.24 ± 2.64 2.17 ± 0.73 a Mean (± standard deviation) values of 28 normal adults. Peak concentrations occurred approximately 1 hour after the dose. b Amoxicillin/clavulanate potassium administered at the start of a light meal. Oral administration of 5 mL of 250 mg/62.5 mg per 5 mL suspension of amoxicillin and clavulanate potassium or the equivalent dose of 10 mL of 125 mg/31.5 mg per 5 mL suspension of amoxicillin and clavulanate potassium provides average peak serum concentrations approximately 1 hour after dosing of 6.9 mcg/mL for amoxicillin and 1.6 mcg/mL for clavulanic acid. The areas under the serum concentration curves obtained during the first 4 hours after dosing were 12.6 mcg*h/mL for amoxicillin and 2.9 mcg*h/mL for clavulanic acid when 5 mL of 250 mg/5 mL suspension of amoxicillin and clavulanate potassium or equivalent dose of 10 mL of 125 mg/5 mL suspension of amoxicillin and clavulanate potassium were administered to normal adults. One 250 mg/62.5 mg chewable tablet of amoxicillin and clavulanate potassium or two 125 mg/31.25 mg chewable tablet of amoxicillin and clavulanate potassium are equivalent to 5 mL of 250 mg/5 mL suspension of amoxicillin and clavulanate potassium and provide similar serum concentrations of amoxicillin and clavulanic acid. Amoxicillin serum concentrations achieved with amoxicillin and clavulanate potassium are similar to those produced by the oral administration of equivalent doses of amoxicillin alone. Time above the minimum inhibitory concentration of 1 mcg/mL for amoxicillin has been shown to be similar after corresponding every 12 hour and every 8 hour dosing regimens of amoxicillin and clavulanate potassium in adults and children. Absorption: Dosing in the fasted or fed state has minimal effect on the pharmacokinetics of amoxicillin. While amoxicillin and clavulanate potassium can be given without regard to meals, absorption of clavulanate potassium when taken with food is greater relative to the fasted state. In one study, the relative bioavailability of clavulanate was reduced when amoxicillin and clavulanate potassium was dosed at 30 and 150 minutes after the start of a high-fat breakfast. Distribution: Neither component in amoxicillin and clavulanate potassium is highly protein-bound; clavulanic acid is approximately 25% bound to human serum and amoxicillin approximately 18% bound. Amoxicillin diffuses readily into most body tissues and fluids with the exception of the brain and spinal fluid. Two hours after oral administration of a single 35 mg/kg dose of suspension of amoxicillin and clavulanate potassium to fasting children, average concentrations of 3 mcg/mL of amoxicillin and 0.5 mcg/mL of clavulanic acid were detected in middle ear effusions. Metabolism and Excretion: The half-life of amoxicillin after the oral administration of amoxicillin and clavulanate potassium is 1.3 hours and that of clavulanic acid is 1 hour. Approximately 50% to 70% of the amoxicillin and approximately 25% to 40% of the clavulanic acid are excreted unchanged in urine during the first 6 hours after administration of a single 250 mg/125 mg or 500 mg/125 mg tablet of amoxicillin and clavulanate potassium. 12.4 Microbiology Amoxicillin is a semisynthetic antibiotic with in vitro bactericidal activity against Gram-positive and Gram-negative bacteria. Amoxicillin is, however, susceptible to degradation by beta-lactamases, and therefore, the spectrum of activity does not include organisms which produce these enzymes. Clavulanic acid is a beta-lactam, structurally related to the penicillins, which possesses the ability to inactivate some beta-lactamase enzymes commonly found in microorganisms resistant to penicillins and cephalosporins. In particular, it has good activity against the clinically important plasmid-mediated beta-lactamases frequently responsible for transferred drug resistance. The formulation of amoxicillin and clavulanic acid in amoxicillin and clavulanate potassium tablets protects amoxicillin from degradation by some beta-lactamase enzymes and extends the antibiotic spectrum of amoxicillin to include many bacteria normally resistant to amoxicillin. Amoxicillin/clavulanic acid has been shown to be active against most isolates of the following bacteria, both in vitro and in clinical infections as described in the INDICATIONS AND USAGE section. Gram-positive bacteria Staphylococcus aureus Gram-negative bacteria Enterobacter species Escherichia coli Haemophilus influenzae Klebsiella species Moraxella catarrhalis The following in vitro data are available, but their clinical significance is unknown . At least 90 percent of the following bacteria exhibit an in vitro minimum inhibitory concentration (MIC) less than or equal to the susceptible breakpoint for amoxicillin/clavulanic acid. However, the efficacy of amoxicillin/clavulanic acid in treating clinical infections due to these bacteria has not been established in adequate and well-controlled clinical trials. Gram-positive Bacteria Enterococcus faecalis Staphylococcus epidermidis Staphylococcus saprophyticus Streptococcus pneumoniae Streptococcus pyogenes Viridans group Streptococcus Gram-negative Bacteria Eikenella corrodens Proteus mirabilis Anaerobic Bacteria Bacteroides species including Bacteroides fragilis Fusobacterium species Peptostreptococcus species For specific information regarding susceptibility test interpretive criteria and associated test methods and quality control standards recognized by FDA for this drug, please see: https://www.fda.gov/STIC.

Clinical Pharmacology Table

Table 3: Mean (±S.D.) Amoxicillin and Clavulanate Potassium Pharmacokinetic Parameters ab With Amoxicillin and Clavulanate Potassium Tablets

Dose and Regimen

C max (mcg/mL)

AUC 0 to 24 (mcg*h/mL)

Amoxicillin and Clavulanate Potassium

Amoxicillin

Clavulanate Potassium

Amoxicillin

Clavulanate Potassium

250 mg/125 mg every 8 hours

3.3 ± 1.12

1.5 ± 0.70

26.7 ± 4.56

12.6 ± 3.25

500 mg/125 mg every 12 hours

6.5 ± 1.41

1.8 ± 0.61

33.4 ± 6.76

8.6 ± 1.95

500 mg/125 mg every 8 hours

7.2 ± 2.26

2.4 ± 0.83

53.4 ± 8.87

15.7 ± 3.86

875 mg/125 mg every 12 hours

11.6 ± 2.78

2.2 ± 0.99

53.5 ± 12.31

10.2 ± 3.04

a

Mean (± standard deviation) values of 14 normal adults (N=15 for clavulanate potassium in the low-dose regimens). Peak concentrations occurred approximately 1.5 hours after the dose.

b

Amoxicillin and clavulanate potassium administered at the start of a light meal.

Mechanism Of Action

12.1 Mechanism of Action Amoxicillin and clavulanate potassium is an antibacterial drug. [see Microbiology 12.4 ]

Pharmacokinetics

12.3 Pharmacokinetics Mean amoxicillin and clavulanate potassium pharmacokinetic parameters in normal adults following administration of amoxicillin and clavulanate potassium tablets are shown in Table 3 and following administration of amoxicillin and clavulanate potassium for oral suspension and chewable tablets are shown in Table 4 . Table 3: Mean (±S.D.) Amoxicillin and Clavulanate Potassium Pharmacokinetic Parameters ab With Amoxicillin and Clavulanate Potassium Tablets Dose and Regimen C max (mcg/mL) AUC 0 to 24 (mcg*h/mL) Amoxicillin and Clavulanate Potassium Amoxicillin Clavulanate Potassium Amoxicillin Clavulanate Potassium 250 mg/125 mg every 8 hours 3.3 ± 1.12 1.5 ± 0.70 26.7 ± 4.56 12.6 ± 3.25 500 mg/125 mg every 12 hours 6.5 ± 1.41 1.8 ± 0.61 33.4 ± 6.76 8.6 ± 1.95 500 mg/125 mg every 8 hours 7.2 ± 2.26 2.4 ± 0.83 53.4 ± 8.87 15.7 ± 3.86 875 mg/125 mg every 12 hours 11.6 ± 2.78 2.2 ± 0.99 53.5 ± 12.31 10.2 ± 3.04 a Mean (± standard deviation) values of 14 normal adults (N=15 for clavulanate potassium in the low-dose regimens). Peak concentrations occurred approximately 1.5 hours after the dose. b Amoxicillin and clavulanate potassium administered at the start of a light meal. Table 4: Mean (±S.D.) Amoxicillin and Clavulanate Potassium Pharmacokinetic Parameters a,b with Amoxicillin and Clavulanate Potassium Powder for Oral Suspension and Chewable Tablets Dose C max (mcg/mL) AUC 0 to 24 (mcg*h/mL) Amoxicillin/Clavulanate potassium Amoxicillin Clavulanate potassium Amoxicillin Clavulanate potassium 400/57 mg (5 mL of suspension) 6.94 ± 1.24 1.10 ± 0.42 17.29 ± 2.28 2.34 ± 0.94 400/57 mg (1 chewable tablet) 6.67 ± 1.37 1.03 ± 0.33 17.24 ± 2.64 2.17 ± 0.73 a Mean (± standard deviation) values of 28 normal adults. Peak concentrations occurred approximately 1 hour after the dose. b Amoxicillin/clavulanate potassium administered at the start of a light meal. Oral administration of 5 mL of 250 mg/62.5 mg per 5 mL suspension of amoxicillin and clavulanate potassium or the equivalent dose of 10 mL of 125 mg/31.5 mg per 5 mL suspension of amoxicillin and clavulanate potassium provides average peak serum concentrations approximately 1 hour after dosing of 6.9 mcg/mL for amoxicillin and 1.6 mcg/mL for clavulanic acid. The areas under the serum concentration curves obtained during the first 4 hours after dosing were 12.6 mcg*h/mL for amoxicillin and 2.9 mcg*h/mL for clavulanic acid when 5 mL of 250 mg/5 mL suspension of amoxicillin and clavulanate potassium or equivalent dose of 10 mL of 125 mg/5 mL suspension of amoxicillin and clavulanate potassium were administered to normal adults. One 250 mg/62.5 mg chewable tablet of amoxicillin and clavulanate potassium or two 125 mg/31.25 mg chewable tablet of amoxicillin and clavulanate potassium are equivalent to 5 mL of 250 mg/5 mL suspension of amoxicillin and clavulanate potassium and provide similar serum concentrations of amoxicillin and clavulanic acid. Amoxicillin serum concentrations achieved with amoxicillin and clavulanate potassium are similar to those produced by the oral administration of equivalent doses of amoxicillin alone. Time above the minimum inhibitory concentration of 1 mcg/mL for amoxicillin has been shown to be similar after corresponding every 12 hour and every 8 hour dosing regimens of amoxicillin and clavulanate potassium in adults and children. Absorption: Dosing in the fasted or fed state has minimal effect on the pharmacokinetics of amoxicillin. While amoxicillin and clavulanate potassium can be given without regard to meals, absorption of clavulanate potassium when taken with food is greater relative to the fasted state. In one study, the relative bioavailability of clavulanate was reduced when amoxicillin and clavulanate potassium was dosed at 30 and 150 minutes after the start of a high-fat breakfast. Distribution: Neither component in amoxicillin and clavulanate potassium is highly protein-bound; clavulanic acid is approximately 25% bound to human serum and amoxicillin approximately 18% bound. Amoxicillin diffuses readily into most body tissues and fluids with the exception of the brain and spinal fluid. Two hours after oral administration of a single 35 mg/kg dose of suspension of amoxicillin and clavulanate potassium to fasting children, average concentrations of 3 mcg/mL of amoxicillin and 0.5 mcg/mL of clavulanic acid were detected in middle ear effusions. Metabolism and Excretion: The half-life of amoxicillin after the oral administration of amoxicillin and clavulanate potassium is 1.3 hours and that of clavulanic acid is 1 hour. Approximately 50% to 70% of the amoxicillin and approximately 25% to 40% of the clavulanic acid are excreted unchanged in urine during the first 6 hours after administration of a single 250 mg/125 mg or 500 mg/125 mg tablet of amoxicillin and clavulanate potassium.

Pharmacokinetics Table

Table 3: Mean (±S.D.) Amoxicillin and Clavulanate Potassium Pharmacokinetic Parameters ab With Amoxicillin and Clavulanate Potassium Tablets

Dose and Regimen

C max (mcg/mL)

AUC 0 to 24 (mcg*h/mL)

Amoxicillin and Clavulanate Potassium

Amoxicillin

Clavulanate Potassium

Amoxicillin

Clavulanate Potassium

250 mg/125 mg every 8 hours

3.3 ± 1.12

1.5 ± 0.70

26.7 ± 4.56

12.6 ± 3.25

500 mg/125 mg every 12 hours

6.5 ± 1.41

1.8 ± 0.61

33.4 ± 6.76

8.6 ± 1.95

500 mg/125 mg every 8 hours

7.2 ± 2.26

2.4 ± 0.83

53.4 ± 8.87

15.7 ± 3.86

875 mg/125 mg every 12 hours

11.6 ± 2.78

2.2 ± 0.99

53.5 ± 12.31

10.2 ± 3.04

a

Mean (± standard deviation) values of 14 normal adults (N=15 for clavulanate potassium in the low-dose regimens). Peak concentrations occurred approximately 1.5 hours after the dose.

b

Amoxicillin and clavulanate potassium administered at the start of a light meal.

Effective Time

20220401

Version

4

Dosage And Administration Table

INFECTION

DOSING REGIMEN

Every 12 hours

Every 12 hours

200 mg/5 mL or 400 mg/5 mL oral suspension a

125 mg/5 mL or 250 mg/5 mL oral suspension a

Otitis media b, sinusitis, lower respiratory tract infections, and more severe infections

45 mg/kg/day every 12 hours

40 mg/kg/day every 8 hours

Less severe infections

25 mg/kg/day every 12 hours

20 mg/kg/day every 8 hours

Dosage Forms And Strengths

3 DOSAGE FORMS AND STRENGTHS 250 mg/125 mg Tablets: White to off-white colored, capsule shaped, biconvex, film-coated tablets, debossed with “I 05” on one side and plain on the other side. Each tablet contains 250 mg amoxicillin as the trihydrate and 125 mg clavulanic acid as the potassium salt. 500 mg/125 mg Tablets: White to off-white colored, capsule shaped, biconvex, film-coated tablets debossed with “I 06” on one side and plain on the other side. Each tablet contains 500 mg amoxicillin as the trihydrate and 125 mg clavulanic acid as the potassium salt. 875 mg/125 mg Tablets: white to off-white colored, capsule shaped, biconvex, film-coated tablets debossed with “I 07” on one side score line on the other side. Each tablet contains 875 mg amoxicillin as the trihydrate and 125 mg clavulanic acid as the potassium salt. The 250 mg/125 mg amoxicillin and clavulanate potassium tablet and the 250 mg/62.5 mg chewable tablet should NOT be substituted for each other, as they are not interchangeable and the 250 mg/125 mg tablet should not be used in children weighing less than 40 kg. The 250 mg/125 mg amoxicillin and clavulanate potassium tablet and the 250 mg/62.5 mg chewable tablet do not contain the same amount of clavulanic acid. The 250 mg/125 mg amoxicillin and clavulanate potassium tablet contains 125 mg of clavulanic acid whereas the 250 mg/62.5 mg chewable tablet contains 62.5 mg of clavulanic acid. Two 250 mg/125 mg amoxicillin and clavulanate potassium tablets should NOT be substituted for one 500 mg/125 mg amoxicillin and clavulanate potassium tablet. Since both the 250 mg/125 mg and 500 mg/125 mg amoxicillin and clavulanate potassium tablets contain the same amount of clavulanic acid (125 mg, as the potassium salt), two 250 mg/125 mg amoxicillin and clavulanate potassium tablets are not equivalent to one 500 mg/125 mg amoxicillin and clavulanate potassium tablet. Tablets: 250 mg/125 mg, 500 mg/125 mg and 875 mg/125 mg ( 3 )

Spl Product Data Elements

AMOXICILLIN AND CLAVULANATE POTASSIUM Amoxicillin and Clavulanate Potassium SILICON DIOXIDE HYPROMELLOSE 2910 (5 MPA.S) MAGNESIUM STEARATE MICROCRYSTALLINE CELLULOSE POLYETHYLENE GLYCOL 400 SODIUM STARCH GLYCOLATE TYPE A POTATO TITANIUM DIOXIDE ETHYLCELLULOSE (10 MPA.S) TALC AMOXICILLIN AMOXICILLIN ANHYDROUS CLAVULANATE POTASSIUM CLAVULANIC ACID white to off-white biconvex I07

Carcinogenesis And Mutagenesis And Impairment Of Fertility

13.1 Carcinogenesis, Mutagenesis, Impairment of Fertility Long-term studies in animals have not been performed to evaluate carcinogenic potential. Amoxicillin and clavulanate potassium (4:1 ratio formulation of amoxicillin:clavulanate) was non-mutagenic in the Ames bacterial mutation assay, and the yeast gene conversion assay. Amoxicillin and clavulanate potassium was weakly positive in the mouse lymphoma assay, but the trend toward increased mutation frequencies in this assay occurred at doses that were also associated with decreased cell survival. Amoxicillin and clavulanate potassium was negative in the mouse micronucleus test, and in the dominant lethal assay in mice. Potassium clavulanate alone was tested in the Ames bacterial mutation assay and in the mouse micronucleus test, and was negative in each of these assays. Amoxicillin and clavulanate potassium tablets (2:1 ratio formulation of amoxicillin:clavulanate) at oral doses of up to 1,200 mg/kg/day was found to have no effect on fertility and reproductive performance in rats. Based on body surface area, this dose of amoxicillin is approximately 4 times the maximum recommended adult human oral dose (875 mg every 12 hours). For clavulanate, the dose multiple is approximately 9 times higher than the maximum recommended adult human oral dose (125 mg every 8 hours), also based on body surface area.

Nonclinical Toxicology

13 NONCLINICAL TOXICOLOGY 13.1 Carcinogenesis, Mutagenesis, Impairment of Fertility Long-term studies in animals have not been performed to evaluate carcinogenic potential. Amoxicillin and clavulanate potassium (4:1 ratio formulation of amoxicillin:clavulanate) was non-mutagenic in the Ames bacterial mutation assay, and the yeast gene conversion assay. Amoxicillin and clavulanate potassium was weakly positive in the mouse lymphoma assay, but the trend toward increased mutation frequencies in this assay occurred at doses that were also associated with decreased cell survival. Amoxicillin and clavulanate potassium was negative in the mouse micronucleus test, and in the dominant lethal assay in mice. Potassium clavulanate alone was tested in the Ames bacterial mutation assay and in the mouse micronucleus test, and was negative in each of these assays. Amoxicillin and clavulanate potassium tablets (2:1 ratio formulation of amoxicillin:clavulanate) at oral doses of up to 1,200 mg/kg/day was found to have no effect on fertility and reproductive performance in rats. Based on body surface area, this dose of amoxicillin is approximately 4 times the maximum recommended adult human oral dose (875 mg every 12 hours). For clavulanate, the dose multiple is approximately 9 times higher than the maximum recommended adult human oral dose (125 mg every 8 hours), also based on body surface area.

Application Number

ANDA204755

Brand Name

AMOXICILLIN AND CLAVULANATE POTASSIUM

Generic Name

Amoxicillin and Clavulanate Potassium

Product Ndc

71205-331

Product Type

HUMAN PRESCRIPTION DRUG

Route

ORAL

Package Label Principal Display Panel

PACKAGE LABEL.PRINCIPAL DISPLAY PANEL NDC 71205-331-20 Amoxicillin and Clavulanate Potassium Tablets, USP 875 mg/125 mg* Rx Only 20 Tablets 71205-331-20

Information For Patients

17 PATIENT COUNSELING INFORMATION 17.1 Information for Patients Patients should be informed that amoxicillin and clavulanate potassium tablets may be taken every 8 hours or every 12 hours, depending on the dose prescribed. Each dose should be taken with a meal or snack to reduce the possibility of gastrointestinal upset. Patients should be counseled that antibacterial drugs, including amoxicillin and clavulanate potassium tablets, should only be used to treat bacterial infections. They do not treat viral infections (e.g., the common cold). When amoxicillin and clavulanate potassium tablets are prescribed to treat a bacterial infection, patients should be told that although it is common to feel better early in the course of therapy, the medication should be taken exactly as directed. Skipping doses or not completing the full course of therapy may: (1) decrease the effectiveness of the immediate treatment, and (2) increase the likelihood that bacteria will develop resistance and will not be treatable by amoxicillin and clavulanate potassium tablets or other antibacterial drugs in the future. Counsel patients that diarrhea is a common problem caused by antibacterials, and it usually ends when the antibacterial is discontinued. Sometimes after starting treatment with antibacterials, patients can develop watery and bloody stools (with or without stomach cramps and fever) even as late as 2 or more months after having taken their last dose of the antibacterial. If diarrhea is severe or lasts more than 2 or 3 days, patients should contact their physician. Patients should be advised to keep suspension refrigerated. Shake well before using. When dosing a child with the suspension (liquid) of amoxicillin and clavulanate potassium, use a dosing spoon or medicine dropper. Be sure to rinse the spoon or dropper after each use. Bottles of suspension of amoxicillin and clavulanate potassium may contain more liquid than required. Follow your doctor’s instructions about the amount to use and the days of treatment your child requires. Discard any unused medicine. Patients should be aware that amoxicillin and clavulanate potassium tablets contain a penicillin class drug product that can cause allergic reactions in some individuals. All brand names listed are the registered trademarks of their respective owners and are not trademarks of Micro Labs Limited. Manufactured by: Micro Labs Limited Banglore-560 100, India. Manufactured for: Micro Labs USA Inc. Basking Ridge, NJ 07920 Relabeled by: Proficient Rx LP Thousand Oaks, CA 91320 Revised: September 2018

Clinical Studies

14 CLINICAL STUDIES 14.1 Lower Respiratory Tract and Complicated Urinary Tract Infections Data from 2 pivotal trials in 1,191 patients treated for either lower respiratory tract infections or complicated urinary tract infections compared a regimen of 875 mg/125 mg amoxicillin and clavulanate potassium tablets every 12 hours to 500 mg/125 mg amoxicillin and clavulanate potassium tablets dosed every 8 hours (584 and 607 patients, respectively). Comparable efficacy was demonstrated between the every 12 hours and every 8 hours dosing regimens. There was no significant difference in the percentage of adverse events in each group. The most frequently reported adverse event was diarrhea; incidence rates were similar for the 875 mg/125 mg every 12 hours and 500 mg/125 mg every 8 hours dosing regimens (15% and 14%, respectively); however, there was a statistically significant difference (p < 0.05) in rates of severe diarrhea or withdrawals with diarrhea between the regimens: 1% for 875 mg/125 mg every 12 hours regimen versus 2% for the 500 mg/125 mg every 8 hours regimen. In one of these pivotal trials, patients with either pyelonephritis (n = 361) or a complicated urinary tract infection (i.e., patients with abnormalities of the urinary tract that predispose to relapse of bacteriuria following eradication, n = 268) were randomized (1:1) to receive either 875 mg/125 mg amoxicillin and clavulanate potassium tablets every 12 hours (n = 308) or 500 mg/125 mg amoxicillin and clavulanate potassium tablets every 8 hours (n = 321). The number of bacteriologically evaluable patients was comparable between the two dosing regimens. Amoxicillin and clavulanate potassium tablets produced comparable bacteriological success rates in patients assessed 2 to 4 days immediately following end of therapy. The bacteriologic efficacy rates were comparable at one of the follow-up visits (5 to 9 days post-therapy) and at a late post-therapy visit (in the majority of cases, this was 2 to 4 weeks post-therapy), as seen in Table 7 . Table 7: Bacteriologic efficacy rates for amoxicillin and clavulanate potassium tablets Time Post Therapy 875 mg/125 mg every 12 hours % (n) 500 mg/125 mg every 8 hours % (n) 2 to 4 days 81% (58) 80% (54) 5 to 9 days 58% (41) 52% (52) 2 to 4 weeks 52% (101) 55% (104) As noted before, though there was no significant difference in the percentage of adverse events in each group, there was a statistically significant difference in rates of severe diarrhea or withdrawals with diarrhea between the regimens. 14.2 Acute Bacterial Otitis Media and Diarrhea in Pediatric Patients One U.S./Canadian clinical trial was conducted which compared 45/6.4 mg/kg/day (divided every 12 hours) of amoxicillin and clavulanate potassium for 10 days versus 40/10 mg/kg/day (divided every 8 hours) of amoxicillin and clavulanate potassium for 10 days in the treatment of acute otitis media. Only the suspension formulations were used in this trial. A total of 575 pediatric patients (aged 2 months to 12 years) were enrolled, with an even distribution among the 2 treatment groups and a comparable number of patients were evaluable (i.e., ≥ 84%) per treatment group. Otitis media-specific criteria were required for eligibility and a strong correlation was found at the end of therapy and follow-up between these criteria and physician assessment of clinical response. The clinical efficacy rates at the end of therapy visit (defined as 2 to 4 days after the completion of therapy) and at the follow-up visit (defined as 22 to 28 days post-completion of therapy) were comparable for the 2 treatment groups, with the following cure rates obtained for the evaluable patients: At end of therapy, 87% (n = 265) and 82% (n = 260) for 45 mg/kg/day every 12 hours and 40 mg/kg/day every 8 hours, respectively. At follow-up, 67% (n = 249) and 69% (n = 243) for 45 mg/kg/day every 12 hours and 40 mg/kg/day every 8 hours, respectively. Diarrhea was defined as either: (a) 3 or more watery or 4 or more loose/watery stools in 1 day; OR (b) 2 watery stools per day or 3 loose/watery stools per day for 2 consecutive days. The incidence of diarrhea was significantly lower in patients who received the every 12 hours regimen compared to patients who received the every 8 hours regimen (14% and 34%, respectively). In addition, the number of patients with either severe diarrhea or who were withdrawn with diarrhea was significantly lower in the every 12 hours treatment group (3% and 8% for the every 12 hours/10 day and every 8 hours/10 day, respectively). In the every 12 hours treatment group, 3 patients (1%) were withdrawn with an allergic reaction, while 1 patient in the every 8 hours group was withdrawn for this reason. The number of patients with a candidal infection of the diaper area was 4% and 6% for the every 12 hours and every 8 hours groups, respectively. It is not known if the finding of a statistically significant reduction in diarrhea with the oral suspensions dosed every 12 hours, versus suspensions dosed every 8 hours, can be extrapolated to the chewable tablets. The presence of mannitol in the chewable tablets may contribute to a different diarrhea profile.

Clinical Studies Table

Table 7: Bacteriologic efficacy rates for amoxicillin and clavulanate potassium tablets

Time Post Therapy

875 mg/125 mg every 12 hours % (n)

500 mg/125 mg every 8 hours % (n)

2 to 4 days

81% (58)

80% (54)

5 to 9 days

58% (41)

52% (52)

2 to 4 weeks

52% (101)

55% (104)

References

15 REFERENCES 1. Swanson-Biearman B, Dean BS, Lopez G, Krenzelok EP. The effects of penicillin and cephalosporin ingestions in children less than six years of age. Vet Hum Toxicol. 1988; 30: 66-67.

Geriatric Use

8.5 Geriatric Use Of the 3,119 patients in an analysis of clinical studies of amoxicillin and clavulanate potassium, 32% were ≥65 years old, and 14% were ≥75 years old. No overall differences in safety or effectiveness were observed between these subjects and younger subjects, and other reported clinical experience has not identified differences in responses between the elderly and younger patients, but greater sensitivity of some older individuals cannot be ruled out. This drug is known to be substantially excreted by the kidney, and the risk of adverse reactions to this drug may be greater in patients with impaired renal function. Because elderly patients are more likely to have decreased renal function, care should be taken in dose selection, and it may be useful to monitor renal function.

Labor And Delivery

8.2 Labor and Delivery Oral ampicillin-class antibiotics are poorly absorbed during labor. It is not known whether use of amoxicillin and clavulanate potassium in humans during labor or delivery has immediate or delayed adverse effects on the fetus, prolongs the duration of labor, or increases the likelihood of the necessity for an obstetrical intervention.

Nursing Mothers

8.3 Nursing Mothers Amoxicillin has been shown to be excreted in human milk. Amoxicillin and clavulanate potassium use by nursing mothers may lead to sensitization of infants. Caution should be exercised when amoxicillin and clavulanate potassium is administered to a nursing woman.

Pediatric Use

8.4 Pediatric Use The safety and effectiveness of amoxicillin and clavulanate potassium for oral suspension and chewable tablets have been established in pediatric patients. Use of amoxicillin and clavulanate potassium in pediatric patients is supported by evidence from studies of amoxicillin and clavulanate potassium tablets in adults with additional data from a study of amoxicillin and clavulanate potassium for oral suspension in pediatric patients aged 2 months to 12 years with acute otitis media. [see Clinical Studies (14.2) ] Because of incompletely developed renal function in neonates and young infants, the elimination of amoxicillin may be delayed; clavulanate elimination is unaltered in this age group. Dosing of amoxicillin and clavulanate potassium should be modified in pediatric patients aged <12 weeks (<3 months). [ see Dosage and Administration (2.2) ]

Pregnancy

8.1 Pregnancy Teratogenic Effects Pregnancy Category B Reproduction studies performed in pregnant rats and mice given amoxicillin and clavulanate potassium (2:1 ratio formulation of amoxicillin:clavulanate) at oral doses up to 1200 mg/kg/day revealed no evidence of harm to the fetus due to amoxicillin and clavulanate potassium. The amoxicillin doses in rats and mice (based on body surface area) were approximately 4 and 2 times the maximum recommended adult human oral dose (875 mg/125 mg every 12 hours). For clavulanate, these dose multiples were approximately 9 and 4 times the maximum recommended adult human oral dose (125 mg every 8 hours). There are, however, no adequate and well-controlled studies in pregnant women. Because animal reproduction studies are not always predictive of human response, this drug should be used during pregnancy only if clearly needed.

Use In Specific Populations

8 USE IN SPECIFIC POPULATIONS • Pediatric Use: Modify dose in patients 12 weeks or younger. ( 8.4 ) • Renal impairment; Dosage adjustment is recommended for severe renal impairment (GFR< 30 mL/min). ( 2.3 , 8.6 ) 8.1 Pregnancy Teratogenic Effects Pregnancy Category B Reproduction studies performed in pregnant rats and mice given amoxicillin and clavulanate potassium (2:1 ratio formulation of amoxicillin:clavulanate) at oral doses up to 1200 mg/kg/day revealed no evidence of harm to the fetus due to amoxicillin and clavulanate potassium. The amoxicillin doses in rats and mice (based on body surface area) were approximately 4 and 2 times the maximum recommended adult human oral dose (875 mg/125 mg every 12 hours). For clavulanate, these dose multiples were approximately 9 and 4 times the maximum recommended adult human oral dose (125 mg every 8 hours). There are, however, no adequate and well-controlled studies in pregnant women. Because animal reproduction studies are not always predictive of human response, this drug should be used during pregnancy only if clearly needed. 8.2 Labor and Delivery Oral ampicillin-class antibiotics are poorly absorbed during labor. It is not known whether use of amoxicillin and clavulanate potassium in humans during labor or delivery has immediate or delayed adverse effects on the fetus, prolongs the duration of labor, or increases the likelihood of the necessity for an obstetrical intervention. 8.3 Nursing Mothers Amoxicillin has been shown to be excreted in human milk. Amoxicillin and clavulanate potassium use by nursing mothers may lead to sensitization of infants. Caution should be exercised when amoxicillin and clavulanate potassium is administered to a nursing woman. 8.4 Pediatric Use The safety and effectiveness of amoxicillin and clavulanate potassium for oral suspension and chewable tablets have been established in pediatric patients. Use of amoxicillin and clavulanate potassium in pediatric patients is supported by evidence from studies of amoxicillin and clavulanate potassium tablets in adults with additional data from a study of amoxicillin and clavulanate potassium for oral suspension in pediatric patients aged 2 months to 12 years with acute otitis media. [see Clinical Studies (14.2) ] Because of incompletely developed renal function in neonates and young infants, the elimination of amoxicillin may be delayed; clavulanate elimination is unaltered in this age group. Dosing of amoxicillin and clavulanate potassium should be modified in pediatric patients aged <12 weeks (<3 months). [ see Dosage and Administration (2.2) ] 8.5 Geriatric Use Of the 3,119 patients in an analysis of clinical studies of amoxicillin and clavulanate potassium, 32% were ≥65 years old, and 14% were ≥75 years old. No overall differences in safety or effectiveness were observed between these subjects and younger subjects, and other reported clinical experience has not identified differences in responses between the elderly and younger patients, but greater sensitivity of some older individuals cannot be ruled out. This drug is known to be substantially excreted by the kidney, and the risk of adverse reactions to this drug may be greater in patients with impaired renal function. Because elderly patients are more likely to have decreased renal function, care should be taken in dose selection, and it may be useful to monitor renal function. 8.6 Dosing in Renal Impairment Amoxicillin is primarily eliminated by the kidney and dosage adjustment is usually required in patients with severe renal impairment (GFR < 30 mL/min). See Patients with Renal Impairment (2.3) for specific recommendations in patients with renal impairment.

How Supplied

16 HOW SUPPLIED/STORAGE AND HANDLING Amoxicillin and Clavulanate Potassium Tablets USP are supplied as follows: Amoxicillin and clavulanate potassium tablets USP, 875 mg/125 mg are white to off-white colored, capsule shaped, biconvex, film-coated tablets debossed with “I 07” on one side score line on the other side. Each tablet contains 875 mg amoxicillin as the trihydrate and 125 mg clavulanic acid as the potassium salt. They are available as follows. Bottles of 14 NDC 71205-331-14 Bottles of 15 NDC 71205-331-15 Bottles of 20 NDC 71205-331-20 Bottles of 30 NDC 71205-331-30 Bottles of 60 NDC 71205-331-60 Bottles of 90 NDC 71205-331-90 Store at 20° to 25°C (68° to 77°F) [See USP Controlled Room Temperature]. Dispense in tightly closed, moisture-proof containers. KEEP THIS AND ALL MEDICATIONS OUT OF THE REACH OF CHILDREN.

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