Ketorolac dose-response for acute pain is well known and the safety rules for adequate prescribing are clear

The study by Duttchen et al. [1] shows almost no difference in analgesic efficacy when comparing 15 and 30mg of IV ketorolac given intraoperatively to provide postoperative pain relief. In the discussion, the authors indicate that another 2017 study performed in an emergency department similarly showed that in patients with acute pain 10, 15 and 30mg are of similar analgesic efficacy [2], suggesting that these data are new.

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