Drug interactions
Carvedilol + Triamterene
Severity: Moderate
Carvedilol and Triamterene: moderate 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 retains potassium, and carvedilol, a non-selective beta-blocker, may reduce cellular potassium uptake. Hyperkalemia is possible, particularly in renal impairment.
What this interaction means in plain words
Carvedilol and Triamterene can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Carvedilol belongs to Cardiovascular; Triamterene belongs to Cardiovascular.
Why it happens
Triamterene reduces renal potassium excretion while beta-2 blockade impairs cellular potassium uptake.
What to do
Monitor serum potassium and renal function at initiation and periodically thereafter. Reduce or stop triamterene if potassium rises.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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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 Carvedilol
Frequently asked questions
Can I take Carvedilol with Triamterene?
MediHelp rates the interaction as moderate. Carvedilol and Triamterene can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Triamterene retains potassium, and carvedilol, a non-selective beta-blocker, may reduce cellular potassium uptake. Hyperkalemia is possible, particularly in renal impairment.
How serious is the interaction between Carvedilol and Triamterene?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor serum potassium and renal function at initiation and periodically thereafter. Reduce or stop triamterene if potassium rises.
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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