title: Plasma concentration of levodopa in patients with Parkinson's disease.
mesh_terms: D000284:Administration, Oral; D000328:Adult; D000368:Aged; D001545:Benserazide / Q000008:administration & dosage; D004295:Dihydroxyphenylalanine / Q000008:administration & dosage* / Q000097:blood / Q000627:therapeutic use; D004338:Drug Combinations; D005260:Female; D006801:Humans; D006834:Hydrazines / Q000008:administration & dosage* / Q000627:therapeutic use; D008297:Male; D008875:Middle Aged; D010300:Parkinson Disease / Q000188:drug therapy*; D010301:Parkinson Disease, Postencephalitic / Q000188:drug therapy
chemical_list: D004338:Drug Combinations; D006834:Hydrazines; D004295:Dihydroxyphenylalanine; D001545:Benserazide