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Drug Information for CLARITHROMYCIN (KAISER FOUNDATION HOSPITALS): Pregnancy
- DESCRIPTION
- CLINICAL PHARMACOLOGY
- MICROBIOLOGY
- INDICATIONS AND USAGE
- CONTRAINDICATIONS
- WARNINGS
- PRECAUTIONS
- Information For Patients
- Drug Interactions
- Carcinogenesis, Mutagenesis, Impairment of Fertility
- Pregnancy
- Nursing Mothers
- Geriatric Use
- ADVERSE REACTIONS
- OVERDOSAGE
- DOSAGE AND ADMINISTRATION
- HOW SUPPLIED
- CLINICAL STUDIES
- ANIMAL PHARMACOLOGY AND TOXICOLOGY
- REFERENCES
- Liens externes liés à CLARITHROMYCIN (KAISER FOUNDATION HOSPITALS)
Teratogenic Effects
Pregnancy Category CFour teratogenicity studies in rats (three with oral doses and one with intravenous doses up to 160 mg/kg/day administered during the period of major organogenesis) and two in rabbits at oral doses up to 125 mg/kg/day (approximately 2 times the recommended maximum human dose based on mg/m2) or intravenous doses of 30 mg/kg/day administered during gestation days 6 to 18 failed to demonstrate any teratogenicity from clarithromycin. Two additional oral studies in a different rat strain at similar doses and similar conditions demonstrated a low incidence of cardiovascular anomalies at doses of 150 mg/kg/day administered during gestation days 6 to 15. Plasma levels after 150 mg/kg/day were 2 times the human serum levels. Four studies in mice revealed a variable incidence of cleft palate following oral doses of 1000 mg/kg/day (2 and 4 times the recommended maximum human dose based on mg/m2, respectively) during gestation days 6 to 15. Cleft palate was also seen at 500 mg/kg/day. The 1000 mg/kg/day exposure resulted in plasma levels 17 times the human serum levels. In monkeys, an oral dose of 70 mg/kg/day (an approximate equidose of the recommended maximum human dose based on mg/m2) produced fetal growth retardation at plasma levels that were 2 times the human serum levels.There are no adequate and well-controlled studies in pregnant women. Clarithromycin should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus. (See WARNINGS.)
- Drug Information Provided by National Library of Medicine (NLM).