Drug interactions
Diflunisal + Vorapaxar
Severity: Major
Diflunisal and Vorapaxar: major interaction.
Last updated Sources: EMA SmPC
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Vorapaxar is a potent antiplatelet agent and diflunisal also impairs platelet function and irritates the gastric mucosa. Combining them raises the risk of bleeding, especially gastrointestinal.
What this interaction means in plain words
Diflunisal and Vorapaxar can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Why it happens
Additive antiplatelet effects: PAR-1 antagonism plus cyclooxygenase inhibition.
What to do
Avoid regular NSAID use where possible and consider an alternative analgesic. If used together, monitor for bleeding and consider gastroprotection.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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References
Other interactions of Diflunisal
- Diflunisal + Ketorolac Contraindicated
- Diflunisal + Ketorolac intranasal Contraindicated
- Acemetacin + Diflunisal Major
- Acetazolamide + Diflunisal Major
- Alteplase + Diflunisal Major
- Amiloride + Diflunisal Major
Frequently asked questions
Can I take Diflunisal with Vorapaxar?
MediHelp rates the interaction as major. Diflunisal and Vorapaxar can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Vorapaxar is a potent antiplatelet agent and diflunisal also impairs platelet function and irritates the gastric mucosa. Combining them raises the risk of bleeding, especially gastrointestinal.
How serious is the interaction between Diflunisal and Vorapaxar?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid regular NSAID use where possible and consider an alternative analgesic. If used together, monitor for bleeding and consider gastroprotection.
What other medicines interact with Diflunisal?
MediHelp also lists interactions of Diflunisal with, for example, Ketorolac, Ketorolac intranasal, Acemetacin. The full list is on the Diflunisal page.
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