title: Vitamin B-6 requirement and oral contraceptive use--a concern?
mesh_terms: D000328:Adult; D003276:Contraceptives, Oral / Q000494:pharmacology*; D004347:Drug Interactions; D005260:Female; D006801:Humans; D008875:Middle Aged; D009751:Nutritional Requirements; D011732:Pyridoxal Phosphate / Q000097:blood / Q000378:metabolism; D011736:Pyridoxine / Q000378:metabolism*; D014364:Tryptophan / Q000097:blood / Q000378:metabolism
chemical_list: D003276:Contraceptives, Oral; D011732:Pyridoxal Phosphate; D014364:Tryptophan; D011736:Pyridoxine