A randomized double-blind study published in Annals of emergency medicine showed that Ketorolac in doses of 10, 15, or 30 mg intravenously has no differences in terms of analgesic effect at 30 minutes. This study did not go over 2 hrs and does not give us any information regarding prolonging pain medication, but for acute onset pain treatment, if there is no contraindication, ketorolac with a dose of 10 mg sounds sufficient!