Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

Made possible by volunteer editors from the University of Calgary & University of Alberta

Last Updated: 10/7/2025

Diclofenac Gel and Cardiac Issues

Cardiovascular Risk Profile

  • The American College of Cardiology notes that diclofenac is associated with a 54% increased risk of recurrent myocardial infarction in patients with cardiovascular risk factors 1, 2
  • The American College of Cardiology also notes that diclofenac is associated with a 140% increased mortality risk compared to placebo in patients with cardiovascular risk factors 1

Specific High-Risk Populations

  • The Journal of the American College of Cardiology reports hazard ratios for death of 2.40 in post-MI patients using diclofenac 3

Safer Alternatives

  • The Journal of the American College of Cardiology recommends a stepped-care approach for patients requiring pain management with cardiac disease, including first-line use of acetaminophen, small doses of narcotics, or nonacetylated salicylates, and second-line use of naproxen if initial therapy is insufficient 3

Cardiovascular Risk and COX-2 Selectivity

  • The American Heart Association recommends that cardiovascular risk is proportional to COX-2 selectivity, and diclofenac's high COX-2 inhibitory potency places it in a higher risk category similar to selective COX-2 inhibitors 2