title: Letter: Pyridoxine contraindicated in parkinsonism.
mesh_terms: D004295:Dihydroxyphenylalanine / Q000009:adverse effects / Q000627:therapeutic use; D004336:Drug Antagonism; D006801:Humans; D008787:Metoclopramide / Q000627:therapeutic use; D009325:Nausea / Q000139:chemically induced; D010300:Parkinson Disease / Q000188:drug therapy*; D011736:Pyridoxine / Q000009:adverse effects* / Q000627:therapeutic use
chemical_list: D004295:Dihydroxyphenylalanine; D011736:Pyridoxine; D008787:Metoclopramide