Summary: For patients with moderate to severe acute renal colic, intramuscular diclofenac (75 mg) or intravenous paracetamol (1g) may be more likely to provide a 50% reduction in pain at 30 minutes than low-dose intravenous morphine (0.1 mg/kg), and both diclofenac and paracetamol may be associated with a lower likelihood of adverse events compared to morphine.

http://www.ncbi.nlm.nih.gov/m/pubmed/26993881/

Strength of Recommendation = B

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