The analgesic effectiveness of codeine and meperidine (demerol).
D000698:Analgesia; D000700:Analgesics; D000758:Anesthesia; D000760:Anesthesia and Analgesia; D003061:Codeine / Q000627:therapeutic use*; D006801:Humans; D008614:Meperidine; D010146:Pain; D059408:Pain Management
D000700:Analgesics; D008614:Meperidine; D003061:Codeine
CODEINE/therapeutic use; MEPERIDINE/anesthesia and analgesia; PAIN