title: The mode of action of promethazine in potentiating narcotic drugs.
mesh_terms: D000701:Analgesics, Opioid / Q000494:pharmacology*; D000771:Anesthesia, Intravenous; D000773:Anesthesia, Obstetrical; D002585:Cesarean Section; D004305:Dose-Response Relationship, Drug; D004341:Drug Evaluation; D004357:Drug Synergism; D005260:Female; D006801:Humans; D011247:Pregnancy; D011398:Promethazine / Q000008:administration & dosage / Q000494:pharmacology*; D013997:Time Factors
chemical_list: D000701:Analgesics, Opioid; D011398:Promethazine