Drug interactions
Aspirin rectal + Diclofenac
Severity: Major
Aspirin rectal and Diclofenac: 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 absorbed systemically, so combining it with diclofenac adds to gastrointestinal bleeding and ulcer risk and may impair renal function. The antiplatelet effects are additive.
What this interaction means in plain words
Aspirin rectal and Diclofenac 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 cyclooxygenase inhibition reduces platelet aggregation and gastroprotective prostaglandins.
What to do
Avoid concurrent use where possible and use a proton pump inhibitor if both are necessary. Monitor for bleeding and renal function.
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 Diclofenac
- Diclofenac + Ketorolac Contraindicated
- Diclofenac + Ketorolac intranasal Contraindicated
- Aceclofenac + Diclofenac Major
- Acemetacin + Diclofenac Major
- Alteplase + Diclofenac Major
- Amiloride + Diclofenac Major
Frequently asked questions
Can I take Aspirin rectal with Diclofenac?
MediHelp rates the interaction as major. Aspirin rectal and Diclofenac 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 absorbed systemically, so combining it with diclofenac adds to gastrointestinal bleeding and ulcer risk and may impair renal function. The antiplatelet effects are additive.
How serious is the interaction between Aspirin rectal and Diclofenac?
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 where possible and use a proton pump inhibitor if both are necessary. Monitor for bleeding and renal function.
What other medicines interact with Diclofenac?
MediHelp also lists interactions of Diclofenac with, for example, Ketorolac, Ketorolac intranasal, Aceclofenac. The full list is on the Diclofenac page.
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