title: 3-O-Methyldopa in Parkinson's disease.
mesh_terms: D000978:Antiparkinson Agents; D004336:Drug Antagonism; D004359:Drug Therapy, Combination; D006801:Humans; D007980:Levodopa / Q000008:administration & dosage* / Q000627:therapeutic use; D008750:Methyldopa / Q000097:blood / Q000627:therapeutic use*; D010300:Parkinson Disease / Q000097:blood / Q000188:drug therapy*; D013997:Time Factors; D014282:Trihexyphenidyl / Q000008:administration & dosage / Q000627:therapeutic use
chemical_list: D000978:Antiparkinson Agents; D007980:Levodopa; D008750:Methyldopa; D014282:Trihexyphenidyl