title: The interaction of drugs with placebos in the control of pain and anxiety.
mesh_terms: D000698:Analgesia; D000700:Analgesics / Q000627:therapeutic use*; D001519:Behavior; D002986:Clinical Trials as Topic; D004336:Drug Antagonism; D004357:Drug Synergism; D006801:Humans; D010919:Placebos; D013404:Suggestion; D014149:Tranquilizing Agents / Q000627:therapeutic use*
chemical_list: D000700:Analgesics; D010919:Placebos; D014149:Tranquilizing Agents