title: Rifampin, oral contraceptives, and pregnancy.
abstract: Rifampin is a drug used in the treatment of tuberculosis. In the literature, there are reports of seven patients who became pregnant while taking a combination of rifampin and oral contraceptives. We report an eighth case involving a woman who became pregnant twice on this drug combination.
mesh_terms: D000328:Adult; D003276:Contraceptives, Oral / Q000008:administration & dosage* / Q000494:pharmacology; D005260:Female; D006801:Humans; D011247:Pregnancy; D011275:Pregnancy, Unwanted; D012008:Recurrence; D012293:Rifampin / Q000008:administration & dosage* / Q000494:pharmacology / Q000627:therapeutic use; D014376:Tuberculosis / Q000188:drug therapy
chemical_list: D003276:Contraceptives, Oral; D012293:Rifampin