Prescription Drug Information: Amoxicillin and Clavulanate Potassium (Page 5 of 5)

13.1 Carcinogenesis, Mutagenesis, Impairment of Fertility

Long-term studies in animals have not been performed to evaluate carcinogenic potential.

Amoxicillin/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/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/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, amoxicillin and clavulanate potassium for oral suspension, and amoxicillin and clavulanate potassium tablets (chewable) (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.

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 oral suspension for 10 days versus 40/10 mg/kg/day (divided every 8 hours) of amoxicillin and clavulanate potassium for oral suspension 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. The every 12 hour oral suspensions (200 mg/25.8 mg per 5 mL and 400 mg/57 mg per 5 mL) are sweetened with aspartame.

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.

16 HOW SUPPLIED/STORAGE AND HANDLING

875 mg/125 mg: White, capsule-shaped, biconvex, film-coated, scored tablets, debossed 93 on one side and 22 score line 75 on the other side. Each tablet contains 875 mg amoxicillin, USP as the trihydrate and 125 mg clavulanic acid as the potassium salt. They are available in (NDC 68071-2502-2) bottles of 2 , (NDC 68071-2502-3 ) bottles of 3 and (NDC 68071-2502-4) bottles of 4.

Store at 20° to 25°C (68° to 77°F) [See USP Controlled Room Temperature].

Dispense in a tight, light-resistant container as defined in the USP, with a child-resistant closure (as required). Advise patients to keep in a closed container.

17 PATIENT COUNSELING INFORMATION

PDP
(click image for full-size original)

AMOXICILLIN AND CLAVULANATE POTASSIUM
amoxicillin and clavulanate potassium tablet, film coated
Product Information
Product Type HUMAN PRESCRIPTION DRUG Item Code (Source) NDC:68071-2502(NDC:0093-2275)
Route of Administration ORAL DEA Schedule
Active Ingredient/Active Moiety
Ingredient Name Basis of Strength Strength
AMOXICILLIN (AMOXICILLIN ANHYDROUS) AMOXICILLIN ANHYDROUS 875 mg
CLAVULANATE POTASSIUM (CLAVULANIC ACID) CLAVULANIC ACID 125 mg
Inactive Ingredients
Ingredient Name Strength
SILICON DIOXIDE
HYPROMELLOSE 2910 (3 MPA.S)
HYPROMELLOSE 2910 (6 MPA.S)
HYPROMELLOSE 2910 (50 MPA.S)
MAGNESIUM STEARATE
MICROCRYSTALLINE CELLULOSE
POLYDEXTROSE
POLYETHYLENE GLYCOL 8000
SODIUM STARCH GLYCOLATE TYPE A POTATO
TITANIUM DIOXIDE
TRIACETIN
Product Characteristics
Color white Score 2 pieces
Shape OVAL (capsule-shaped) Size 22mm
Flavor Imprint Code 93;22;75
Contains
Packaging
# Item Code Package Description Multilevel Packaging
1 NDC:68071-2502-4 4 TABLET, FILM COATED in 1 BOTTLE None
2 NDC:68071-2502-2 2 TABLET, FILM COATED in 1 BOTTLE None
3 NDC:68071-2502-3 3 TABLET, FILM COATED in 1 BOTTLE None
Image of Product
(click image for full-size original)
Marketing Information
Marketing Category Application Number or Monograph Citation Marketing Start Date Marketing End Date
ANDA ANDA065096 10/31/2002
Labeler — NuCare Pharmaceuticals,Inc. (010632300)
Establishment
Name Address ID/FEI Operations
NuCare Pharmaceuticals,Inc. 010632300 repack (68071-2502)

Revised: 08/2022 NuCare Pharmaceuticals,Inc.

RxDrugLabels.com provides trustworthy package insert and label information about marketed prescription drugs as submitted by manufacturers to the U.S. Food and Drug Administration. Package information is not reviewed or updated separately by RxDrugLabels.com. Every individual prescription drug label and package insert entry contains a unique identifier which can be used to secure further details directly from the U.S. National Institutes of Health and/or the FDA.

As a leading independent provider of trustworthy medication information, we source our database directly from the FDA's central repository of drug labels and package inserts under the Structured Product Labeling standard. RxDrugLabels.com provides the full prescription-only subset of the FDA's repository. Medication information provided here is not intended as a substitute for direct consultation with a qualified health professional.

Terms of Use | Copyright © 2022. All Rights Reserved.