Drug interactions
Hydrochlorothiazide-valsartan + Potassium acid
Severity: Moderate
Hydrochlorothiazide-valsartan and Potassium 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
Valsartan reduces aldosterone-mediated potassium excretion and potassium phosphate adds a potassium load, risking hyperkalemia. Hydrochlorothiazide offsets this partly, but the net effect is unpredictable, especially with renal impairment.
What this interaction means in plain words
Hydrochlorothiazide-valsartan and Potassium 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
ARB-related reduction in potassium excretion plus supplemental potassium, partly offset by thiazide kaliuresis.
What to do
Monitor serum potassium and renal function regularly, 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-valsartan
- Aliskiren + Hydrochlorothiazide-valsartan Contraindicated
- Dofetilide + Hydrochlorothiazide-valsartan Contraindicated
- Hydrochlorothiazide-valsartan + Sparsentan Contraindicated
- Aldesleukin + Hydrochlorothiazide-valsartan Major
- Amifostine + Hydrochlorothiazide-valsartan Major
- Amiloride + Hydrochlorothiazide-valsartan Major
Frequently asked questions
Can I take Hydrochlorothiazide-valsartan with Potassium acid?
MediHelp rates the interaction as moderate. Hydrochlorothiazide-valsartan and Potassium 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. Valsartan reduces aldosterone-mediated potassium excretion and potassium phosphate adds a potassium load, risking hyperkalemia. Hydrochlorothiazide offsets this partly, but the net effect is unpredictable, especially with renal impairment.
How serious is the interaction between Hydrochlorothiazide-valsartan and Potassium 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 regularly, and adjust the potassium dose accordingly.
What other medicines interact with Hydrochlorothiazide-valsartan?
MediHelp also lists interactions of Hydrochlorothiazide-valsartan with, for example, Aliskiren, Dofetilide, Sparsentan. The full list is on the Hydrochlorothiazide-valsartan page.
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