title: Vitamin supplements to women using oral contraceptives (studies of vitamins B1, B2, B6 and A).
mesh_terms: D000284:Administration, Oral; D001219:Aspartate Aminotransferases / Q000097:blood; D003276:Contraceptives, Oral; D003277:Contraceptives, Oral, Combined; D004997:Ethinyl Estradiol / Q000008:administration & dosage; D005260:Female; D005980:Glutathione Reductase / Q000097:blood; D006801:Humans; D007736:Kynurenic Acid / Q000652:urine; D009644:Norgestrel / Q000008:administration & dosage; D011736:Pyridoxine / Q000008:administration & dosage*; D012256:Riboflavin / Q000008:administration & dosage* / Q000097:blood; D013831:Thiamine / Q000008:administration & dosage*; D014174:Transketolase / Q000097:blood; D014801:Vitamin A / Q000008:administration & dosage* / Q000097:blood; D014977:Xanthurenates / Q000652:urine
chemical_list: D003276:Contraceptives, Oral; D003277:Contraceptives, Oral, Combined; D014977:Xanthurenates; D014801:Vitamin A; D009644:Norgestrel; D004997:Ethinyl Estradiol; D005980:Glutathione Reductase; D014174:Transketolase; D001219:Aspartate Aminotransferases; D007736:Kynurenic Acid; D011736:Pyridoxine; D012256:Riboflavin; D013831:Thiamine