Drug interactions
Finerenone + Triamterene
Severity: Major
Finerenone and Triamterene: major interaction.
Last updated Sources: UK SmPC
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
Finerenone is a mineralocorticoid receptor antagonist that itself causes hyperkalemia. Adding triamterene, a potassium-sparing diuretic, raises the likelihood of clinically significant hyperkalemia, particularly in patients with chronic kidney disease or diabetes.
What this interaction means in plain words
Finerenone 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.
Finerenone belongs to Cardiovascular; Triamterene belongs to Cardiovascular.
Why it happens
Additive potassium retention through mineralocorticoid receptor blockade (finerenone) and epithelial sodium channel blockade (triamterene).
What to do
Avoid concomitant use where possible. If unavoidable, monitor serum potassium closely and adjust or hold finerenone per labeling based on potassium level.
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 Triamterene
- Amiloride + Triamterene Contraindicated
- Eplerenone + Triamterene Contraindicated
- Potassium citrate / citric acid + Triamterene Contraindicated
- Potassium citrate + Triamterene Contraindicated
- Spironolactone + Triamterene Contraindicated
- Aceclofenac + Triamterene Major
Other interactions of Finerenone
- Carbamazepine + Finerenone Contraindicated
- Clarithromycin + Finerenone Contraindicated
- Ensitrelvir + Finerenone Contraindicated
- Finerenone + Itraconazole Contraindicated
- Finerenone + Ketoconazole Contraindicated
- Finerenone + Posaconazole Contraindicated
Frequently asked questions
Can I take Finerenone with Triamterene?
MediHelp rates the interaction as major. Finerenone 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. Finerenone is a mineralocorticoid receptor antagonist that itself causes hyperkalemia. Adding triamterene, a potassium-sparing diuretic, raises the likelihood of clinically significant hyperkalemia, particularly in patients with chronic kidney disease or diabetes.
How serious is the interaction between Finerenone 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 concomitant use where possible. If unavoidable, monitor serum potassium closely and adjust or hold finerenone per labeling based on potassium level.
What other medicines interact with Triamterene?
MediHelp also lists interactions of Triamterene with, for example, Amiloride, Eplerenone, Potassium citrate / citric acid. The full list is on the Triamterene page.
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