title: The comparative value of amantadine and levodopa.
mesh_terms: D000547:Amantadine / Q000009:adverse effects / Q000627:therapeutic use*; D002986:Clinical Trials as Topic; D004295:Dihydroxyphenylalanine / Q000009:adverse effects / Q000627:therapeutic use*; D006801:Humans; D008875:Middle Aged; D010300:Parkinson Disease / Q000188:drug therapy*
chemical_list: D004295:Dihydroxyphenylalanine; D000547:Amantadine