title: Letter: Pyridoxine in parkinsonism.
mesh_terms: D004295:Dihydroxyphenylalanine / Q000627:therapeutic use*; D004336:Drug Antagonism; D004347:Drug Interactions; D006801:Humans; D008787:Metoclopramide / Q000009:adverse effects; D009069:Movement Disorders / Q000139:chemically induced; D010300:Parkinson Disease / Q000188:drug therapy*; D011398:Promethazine / Q000627:therapeutic use; D011736:Pyridoxine / Q000009:adverse effects / Q000627:therapeutic use*
chemical_list: D004295:Dihydroxyphenylalanine; D011398:Promethazine; D011736:Pyridoxine; D008787:Metoclopramide