Failure of oral contraceptive with rifampicin.
D000328:Adult; D003276:Contraceptives, Oral / Q000494:pharmacology*; D003277:Contraceptives, Oral, Combined / Q000494:pharmacology*; D004347:Drug Interactions; D005260:Female; D006801:Humans; D011247:Pregnancy; D012293:Rifampin / Q000494:pharmacology*
D003276:Contraceptives, Oral; D003277:Contraceptives, Oral, Combined; D012293:Rifampin