title: Evaluation of new analgesics. Butorphanol and nalbuphine.
mesh_terms: D000700:Analgesics / Q000627:therapeutic use; D002077:Butorphanol / Q000008:administration & dosage / Q000627:therapeutic use*; D004341:Drug Evaluation; D005260:Female; D006801:Humans; D007880:Legislation, Drug; D008722:Methods; D009019:Morphinans / Q000627:therapeutic use*; D009266:Nalbuphine / Q000008:administration & dosage / Q000627:therapeutic use*; D010146:Pain / Q000188:drug therapy*; D011247:Pregnancy; D014481:United States
chemical_list: D000700:Analgesics; D009019:Morphinans; D009266:Nalbuphine; D002077:Butorphanol