IRCT20220108053669N1 IRCT 2022-01-16 Kermanshah University of Medical Sciences Comparing the effect of the combination of two pain killers with morphine in patients with flank pain Comparing the analgesic effect of paracetamol and ketorolac VS morphine in renal colic; A randomized controlled trial 2022-01-21 anticipated 30 Complete https://irct.ir/trial/61167 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Not used, Assignment: Parallel, Purpose: Prevention, Randomization description: The patients are grouped into two groups through block randomization. There are 4 blocks in which two special are for the sham group and two special blocks are for the control group and the numbers are determined randomly by computer, Blinding description: The drugs are prepared by the emergency staff who doesn't have any other impact on this study. The drugs are packed in similar packages in which they can only distinguish by numbers and they are administered by a nurse who doesn't know of the ingredients. According to the patients' order and through the random block is administered by emergency nurses who are not aware of the component. After administration, the intern will submit the amount of pain, in which they don't know the groups either, in 0, 15, and 30 minutes after administration by a numerical rating scale. If after 30 min the patients would have intolerable pain, by the doctor's permission, they will get a fentanyl dose. 3 Pain in the flank - Kidney problem. Intervention 1: Intervention group: Ketorolac and paracetamol with a dose of 30 mg IV and 1000 mg IV, respectively, is infused with 100 cc N/S in 15 min. Intervention 2: Control group: Morphine with a dose of 0.1 mg/kg IV is infused with 100 cc N/S in 15 min. No - There is not a plan to make this available Justification or reason for not sharing IPD is There is no more information.