Drug interactions
Hydrochlorothiazide-telmisartan + Potassium citrate / citric acid
Severity: Moderate
Hydrochlorothiazide-telmisartan and Potassium citrate / citric acid: 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
Telmisartan reduces aldosterone-mediated potassium excretion, and potassium supplements add to potassium load, risking hyperkalemia. Hydrochlorothiazide partly offsets this, but the risk remains in renal impairment or diabetes.
What this interaction means in plain words
Hydrochlorothiazide-telmisartan and Potassium citrate / citric acid 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.
Why it happens
Additive potassium elevation from ARB-reduced renal potassium excretion and exogenous potassium.
What to do
Monitor serum potassium and renal function after starting and periodically, and adjust the potassium dose accordingly.
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 Hydrochlorothiazide-telmisartan
- Aliskiren + Hydrochlorothiazide-telmisartan Contraindicated
- Dofetilide + Hydrochlorothiazide-telmisartan Contraindicated
- Hydrochlorothiazide-telmisartan + Sparsentan Contraindicated
- Aldesleukin + Hydrochlorothiazide-telmisartan Major
- Amifostine + Hydrochlorothiazide-telmisartan Major
- Amiloride + Hydrochlorothiazide-telmisartan Major
Frequently asked questions
Can I take Hydrochlorothiazide-telmisartan with Potassium citrate / citric acid?
MediHelp rates the interaction as moderate. Hydrochlorothiazide-telmisartan and Potassium citrate / citric acid 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. Telmisartan reduces aldosterone-mediated potassium excretion, and potassium supplements add to potassium load, risking hyperkalemia. Hydrochlorothiazide partly offsets this, but the risk remains in renal impairment or diabetes.
How serious is the interaction between Hydrochlorothiazide-telmisartan and Potassium citrate / citric acid?
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 after starting and periodically, and adjust the potassium dose accordingly.
What other medicines interact with Hydrochlorothiazide-telmisartan?
MediHelp also lists interactions of Hydrochlorothiazide-telmisartan with, for example, Aliskiren, Dofetilide, Sparsentan. The full list is on the Hydrochlorothiazide-telmisartan page.
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