Ketorolac for Acute Low Back Pain Management

Introduction to Ketorolac Therapy

The American Academy of Family Physicians recommends starting with ketorolac 60 mg IM as initial therapy in the ED for rapid pain control, recognizing that maximal effect occurs approximately 2.2 hours after dosing 1
The American College of Physicians and American Pain Society recommend against opioids as first-line therapy for acute low back pain, positioning NSAIDs (including ketorolac) as preferred initial agents 4

Consider adding a muscle relaxant (such as cyclobenzaprine) for short-term use (≤1-2 weeks) if severe pain persists, as combination therapy targeting both inflammatory and muscle spasm components may provide enhanced relief, although the strength of evidence is not specified 3
If radicular symptoms (sciatica) are present, add gabapentin titrated to 1200-3600 mg/day for the neuropathic component, as this addresses radiculopathy more effectively than NSAIDs alone, with moderate strength of evidence 5

Transition to oral NSAIDs (such as ibuprofen 400-800 mg every 6 hours, maximum 2.4 g/day) after initial ED treatment rather than continuing oral ketorolac, as guidelines recommend NSAIDs as first-line therapy for acute low back pain, with high strength of evidence 1, 4

Avoid ketorolac in patients with aspirin/NSAID-induced asthma, pregnancy, cerebrovascular hemorrhage, or significant renal impairment, due to increased risk of adverse effects, with high strength of evidence 1
In older adults (>60 years), exercise particular caution due to increased risk of renal, gastrointestinal, and cardiac toxicity; consider lower doses and shorter duration, with moderate strength of evidence 5