Drug interactions
Aspirin rectal + Diflunisal
Severity: Major
Aspirin rectal and Diflunisal: major interaction.
Last updated Sources: US FDA label
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
Rectal aspirin is systemically absorbed, so combining it with diflunisal raises the risk of GI bleeding and platelet dysfunction without added benefit.
What this interaction means in plain words
Aspirin rectal and Diflunisal 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 COX inhibition with platelet dysfunction and mucosal injury.
What to do
Avoid concurrent use. If both are required, add gastroprotection and monitor for bleeding.
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 Aspirin rectal with Diflunisal?
MediHelp rates the interaction as major. Aspirin rectal and Diflunisal 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. Rectal aspirin is systemically absorbed, so combining it with diflunisal raises the risk of GI bleeding and platelet dysfunction without added benefit.
How serious is the interaction between Aspirin rectal and Diflunisal?
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 concurrent use. If both are required, add gastroprotection and monitor for bleeding.
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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