title: Letter: Ascorbic acid in levodopa therapy.
mesh_terms: D001205:Ascorbic Acid / Q000008:administration & dosage / Q000627:therapeutic use*; D004347:Drug Interactions; D004359:Drug Therapy, Combination; D006801:Humans; D007980:Levodopa / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use*; D008297:Male; D008875:Middle Aged; D010300:Parkinson Disease / Q000188:drug therapy*
chemical_list: D007980:Levodopa; D001205:Ascorbic Acid