Drug interactions
Piroxicam + Triamterene
Severity: Major
Piroxicam and Triamterene: 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
NSAIDs given with triamterene have been linked to acute kidney injury and hyperkalemia. They also reduce the diuretic effect of triamterene.
What this interaction means in plain words
Piroxicam and Triamterene 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.
Piroxicam belongs to Musculoskeletal; Triamterene belongs to Cardiovascular.
Why it happens
NSAID inhibition of renal prostaglandin synthesis reduces renal perfusion and potassium excretion, adding to triamterene's blockade of epithelial sodium channels.
What to do
Avoid the combination where possible, especially in elderly or dehydrated patients or those with kidney disease. If used, monitor serum potassium and renal function closely.
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 Piroxicam and Triamterene, 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 Piroxicam
- Ketorolac intranasal + Piroxicam Contraindicated
- Ketorolac + Piroxicam Contraindicated
- Aceclofenac + Piroxicam Major
- Acemetacin + Piroxicam Major
- Acetylsalicylic acid + Piroxicam Major
- Alteplase + Piroxicam Major
Other interactions of Triamterene
- Amiloride + Triamterene Contraindicated
- Eplerenone + Triamterene Contraindicated
- Potassium citrate / citric acid + Triamterene Contraindicated
- Potassium citrate + Triamterene Contraindicated
- Spironolactone + Triamterene Contraindicated
- Aceclofenac + Triamterene Major
Frequently asked questions
Can I take Piroxicam with Triamterene?
MediHelp rates the interaction as major. Piroxicam and Triamterene 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 given with triamterene have been linked to acute kidney injury and hyperkalemia. They also reduce the diuretic effect of triamterene.
How serious is the interaction between Piroxicam and Triamterene?
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 the combination where possible, especially in elderly or dehydrated patients or those with kidney disease. If used, monitor serum potassium and renal function closely.
What other medicines interact with Piroxicam?
MediHelp also lists interactions of Piroxicam with, for example, Ketorolac intranasal, Ketorolac, Aceclofenac. The full list is on the Piroxicam 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.
