Drug interactions
Sparsentan + Triamterene
Severity: Major
Sparsentan and Triamterene: 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
Sparsentan blocks the angiotensin II receptor and can raise serum potassium. Combined with triamterene, the risk of hyperkalemia is significantly increased, especially with reduced renal function.
What this interaction means in plain words
Sparsentan 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.
Sparsentan belongs to Genitourinary; Triamterene belongs to Cardiovascular.
Why it happens
Angiotensin receptor blockade lowers aldosterone-mediated potassium excretion, additive with triamterene ENaC blockade.
What to do
Avoid concomitant potassium-sparing diuretics where possible; otherwise monitor serum potassium frequently, particularly early in therapy.
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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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 Sparsentan
- Aliskiren + Sparsentan Contraindicated
- Amlodipine-hydrochlorothiazide-valsartan + Sparsentan Contraindicated
- Amlodipine-olmesartan-hydrochlorothiazide + Sparsentan Contraindicated
- Amlodipine-olmesartan + Sparsentan Contraindicated
- Amlodipine-valsartan + Sparsentan Contraindicated
- Azilsartan-chlorthalidone + Sparsentan Contraindicated
Frequently asked questions
Can I take Sparsentan with Triamterene?
MediHelp rates the interaction as major. Sparsentan 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. Sparsentan blocks the angiotensin II receptor and can raise serum potassium. Combined with triamterene, the risk of hyperkalemia is significantly increased, especially with reduced renal function.
How serious is the interaction between Sparsentan 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 potassium-sparing diuretics where possible; otherwise monitor serum potassium frequently, particularly early in therapy.
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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