Ketorolac: an injectable NSAID.

Ketorolac tromethamine is the first injectable nonsteroidal anti-inflammatory drug approved for the management of acute pain. In analgesic potency and ability to relieve postoperative pain, it is comparable to morphine. The advantages of ketorolac over opiates are the absence of respiratory depression and lack of drug abuse potential. Ketorolac has a longer duration of action than morphine, but it has less effect on the central nervous system. Ketorolac should not be used for obstetric analgesia.