title: Effect of pyridoxine on levodopa metabolism in normal and parkinsonian subjects.
mesh_terms: D000368:Aged; D004295:Dihydroxyphenylalanine / Q000008:administration & dosage / Q000378:metabolism* / Q000627:therapeutic use / Q000652:urine; D006801:Humans; D008875:Middle Aged; D010300:Parkinson Disease / Q000188:drug therapy / Q000378:metabolism*; D010592:Pharmaceutic Aids / Q000494:pharmacology; D011736:Pyridoxine / Q000008:administration & dosage / Q000494:pharmacology*; D013268:Stimulation, Chemical
chemical_list: D010592:Pharmaceutic Aids; D004295:Dihydroxyphenylalanine; D011736:Pyridoxine