Verki MRM, et al. - In this double-blind clinical trial study, researchers determined the analgesic effects of magnesium sulphate on acute renal colic pain. They randomly assigned the patients with renal colic pain to 2 groups: Group I received an intravenous infusion of 30 mg of Ketorolac and normal saline as placebo, Group II 50 mg/kg magnesium sulphate 50%/100 ml normal plus 30 mg of Ketorolac. Findings suggest no influence of magnesium sulphate on renal colic pain relief.