title: Opioid agonists and antagonists in schizophrenia.
mesh_terms: D004311:Double-Blind Method; D004723:Endorphins / Q000627:therapeutic use*; D006212:Hallucinations / Q000188:drug therapy; D006801:Humans; D009270:Naloxone / Q000627:therapeutic use; D009292:Narcotic Antagonists / Q000627:therapeutic use*; D012559:Schizophrenia / Q000188:drug therapy*
chemical_list: D004723:Endorphins; D009292:Narcotic Antagonists; D009270:Naloxone