Drug interactions
Aspirin rectal + Naproxen
Severity: Major
Aspirin rectal and Naproxen: 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 and, combined with naproxen, increases the risk of gastrointestinal bleeding. Naproxen may also reduce the antiplatelet effect of low-dose aspirin.
What this interaction means in plain words
Aspirin rectal and Naproxen 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 mucosal injury and competition for the platelet COX-1 site.
What to do
Avoid regular concurrent use and prefer paracetamol for analgesia. If both are required, consider 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?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Aspirin rectal and Naproxen, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 7 days on the web. No card needed.
References
Other interactions of Naproxen
- Ketorolac intranasal + Naproxen Contraindicated
- Ketorolac + Naproxen Contraindicated
- Aceclofenac + Naproxen Major
- Acemetacin + Naproxen Major
- Acetylsalicylic acid + Naproxen Major
- Alteplase + Naproxen Major
Frequently asked questions
Can I take Aspirin rectal with Naproxen?
MediHelp rates the interaction as major. Aspirin rectal and Naproxen 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 and, combined with naproxen, increases the risk of gastrointestinal bleeding. Naproxen may also reduce the antiplatelet effect of low-dose aspirin.
How serious is the interaction between Aspirin rectal and Naproxen?
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 concurrent use and prefer paracetamol for analgesia. If both are required, consider gastroprotection and monitor for bleeding.
What other medicines interact with Naproxen?
MediHelp also lists interactions of Naproxen with, for example, Ketorolac intranasal, Ketorolac, Aceclofenac. The full list is on the Naproxen page.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
