title: Pyridoxine and oral contraceptives.
mesh_terms: D002986:Clinical Trials as Topic; D003276:Contraceptives, Oral / Q000009:adverse effects*; D004967:Estrogens / Q000009:adverse effects* / Q000494:pharmacology; D005260:Female; D006801:Humans; D011736:Pyridoxine / Q000494:pharmacology*; D014364:Tryptophan / Q000378:metabolism*; D014366:Tryptophan Oxygenase; D026681:Vitamin B 6 Deficiency; D014977:Xanthurenates / Q000652:urine*
chemical_list: D003276:Contraceptives, Oral; D004967:Estrogens; D014977:Xanthurenates; D014364:Tryptophan; D014366:Tryptophan Oxygenase; D011736:Pyridoxine