title: Lack of effect on naloxone on schizophrenic symptoms.
mesh_terms: D000328:Adult; D001007:Anxiety / Q000188:drug therapy; D002908:Chronic Disease; D006212:Hallucinations / Q000188:drug therapy; D006801:Humans; D007275:Injections, Intravenous; D008297:Male; D008875:Middle Aged; D009270:Naloxone / Q000008:administration & dosage / Q000627:therapeutic use*; D010919:Placebos; D011569:Psychiatric Status Rating Scales; D012559:Schizophrenia / Q000188:drug therapy*; D014149:Tranquilizing Agents / Q000627:therapeutic use
chemical_list: D010919:Placebos; D014149:Tranquilizing Agents; D009270:Naloxone