title: Gastric acidity and levodopa in Parkinsonism.
mesh_terms: D000126:Achlorhydria / Q000150:complications; D004295:Dihydroxyphenylalanine / Q000627:therapeutic use*; D005745:Gastric Acidity Determination; D005750:Gastric Juice / Q000378:metabolism*; D006801:Humans; D010300:Parkinson Disease / Q000188:drug therapy*
chemical_list: D004295:Dihydroxyphenylalanine