title: Melatonin and parkinsonism.
mesh_terms: D000284:Administration, Oral; D000368:Aged; D002986:Clinical Trials as Topic; D005260:Female; D006801:Humans; D008297:Male; D008550:Melatonin / Q000008:administration & dosage / Q000627:therapeutic use*; D008875:Middle Aged; D010300:Parkinson Disease / Q000188:drug therapy*; D010919:Placebos
chemical_list: D010919:Placebos; D008550:Melatonin