Drug interactions
Potassium acid + Triamterene
Severity: Major
Potassium acid 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
Triamterene conserves potassium, and adding potassium phosphate supplements can cause dangerous hyperkalemia. The risk is greatest in renal impairment, diabetes or older age.
What this interaction means in plain words
Potassium acid 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.
Why it happens
Triamterene blocks renal potassium secretion while the supplement adds a potassium load, causing additive potassium retention.
What to do
Avoid combining unless hypokalemia is documented and refractory. If used, monitor serum potassium and ECG 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?
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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
Frequently asked questions
Can I take Potassium acid with Triamterene?
MediHelp rates the interaction as major. Potassium acid 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. Triamterene conserves potassium, and adding potassium phosphate supplements can cause dangerous hyperkalemia. The risk is greatest in renal impairment, diabetes or older age.
How serious is the interaction between Potassium acid 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 combining unless hypokalemia is documented and refractory. If used, monitor serum potassium and ECG closely.
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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