title: Amenorrhea following rifampin administration during oral contraceptive use.
mesh_terms: D000328:Adult; D000568:Amenorrhea / Q000139:chemically induced*; D003276:Contraceptives, Oral / Q000378:metabolism*; D004997:Ethinyl Estradiol / Q000378:metabolism*; D005260:Female; D006801:Humans; D009640:Norethindrone / Q000378:metabolism*; D012293:Rifampin / Q000009:adverse effects* / Q000494:pharmacology / Q000627:therapeutic use; D014397:Tuberculosis, Pulmonary / Q000188:drug therapy
chemical_list: D003276:Contraceptives, Oral; D004997:Ethinyl Estradiol; D009640:Norethindrone; D012293:Rifampin