title: Melatonin and parkinsonism.
mesh_terms: D004295:Dihydroxyphenylalanine / Q000627:therapeutic use; D004361:Drug Tolerance; D005069:Evaluation Studies as Topic; D006801:Humans; D008550:Melatonin / Q000627:therapeutic use*; D010300:Parkinson Disease / Q000188:drug therapy*
chemical_list: D004295:Dihydroxyphenylalanine; D008550:Melatonin