Drug interactions
Naproxen + Penbutolol
Severity: Moderate
Naproxen and Penbutolol: moderate interaction.
Last updated
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
Regular naproxen use can reduce the blood-pressure-lowering effect of beta-blockers. Renal function and fluid balance may also be affected.
What this interaction means in plain words
Naproxen and Penbutolol can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Why it happens
NSAIDs inhibit vasodilatory prostaglandin synthesis and promote sodium and water retention, opposing the antihypertensive effect.
What to do
Monitor blood pressure when NSAID therapy is started or stopped, and adjust antihypertensive doses if needed. Use the lowest effective NSAID dose for the shortest time.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Naproxen and Penbutolol, 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 14 days on the web. No card needed.
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 Naproxen with Penbutolol?
MediHelp rates the interaction as moderate. Naproxen and Penbutolol can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Regular naproxen use can reduce the blood-pressure-lowering effect of beta-blockers. Renal function and fluid balance may also be affected.
How serious is the interaction between Naproxen and Penbutolol?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor blood pressure when NSAID therapy is started or stopped, and adjust antihypertensive doses if needed. Use the lowest effective NSAID dose for the shortest time.
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.
