Drug interactions
Fenoprofen + Spironolactone
Severity: Major
Fenoprofen and Spironolactone: major 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
NSAIDs reduce renal function and promote potassium retention, and spironolactone is a potassium-sparing aldosterone antagonist. Together they can cause hyperkalemia and acute kidney injury, and NSAIDs blunt the diuretic effect.
What this interaction means in plain words
Fenoprofen and Spironolactone 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.
Fenoprofen belongs to Musculoskeletal; Spironolactone belongs to Cardiovascular.
Why it happens
NSAIDs suppress prostaglandin-mediated renal perfusion and renin-aldosterone activity, while spironolactone blocks mineralocorticoid receptors, both reducing potassium excretion.
What to do
Monitor serum potassium and creatinine at baseline and soon after starting, then periodically. Avoid the combination in renal impairment or heart failure when alternatives exist.
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 Fenoprofen and Spironolactone, 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 Fenoprofen
- Fenoprofen + Ketorolac Contraindicated
- Fenoprofen + Ketorolac intranasal Contraindicated
- Aceclofenac + Fenoprofen Major
- Acemetacin + Fenoprofen Major
- Acetylsalicylic acid + Fenoprofen Major
- Alteplase + Fenoprofen Major
Other interactions of Spironolactone
- Amiloride + Spironolactone Contraindicated
- Eplerenone + Spironolactone Contraindicated
- Spironolactone + Triamterene Contraindicated
- Abiraterone + Spironolactone Major
- Aceclofenac + Spironolactone Major
- Acemetacin + Spironolactone Major
Frequently asked questions
Can I take Fenoprofen with Spironolactone?
MediHelp rates the interaction as major. Fenoprofen and Spironolactone 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. NSAIDs reduce renal function and promote potassium retention, and spironolactone is a potassium-sparing aldosterone antagonist. Together they can cause hyperkalemia and acute kidney injury, and NSAIDs blunt the diuretic effect.
How serious is the interaction between Fenoprofen and Spironolactone?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor serum potassium and creatinine at baseline and soon after starting, then periodically. Avoid the combination in renal impairment or heart failure when alternatives exist.
What other medicines interact with Fenoprofen?
MediHelp also lists interactions of Fenoprofen with, for example, Ketorolac, Ketorolac intranasal, Aceclofenac. The full list is on the Fenoprofen 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.
