Drug interactions
Hydrochlorothiazide-olmesartan + Potassium chloride
Severity: Moderate
Hydrochlorothiazide-olmesartan and Potassium chloride: 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
Potassium chloride with an ARB can cause hyperkalemia, while the thiazide tends to lower potassium, so the net effect varies. Risk is higher in renal impairment, diabetes or older age.
What this interaction means in plain words
Hydrochlorothiazide-olmesartan and Potassium chloride 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.
Hydrochlorothiazide-olmesartan belongs to Cardiovascular; Potassium chloride belongs to Gastrointestinal Tract.
Why it happens
Potassium supplementation plus ARB-reduced aldosterone effect raises potassium, opposed by thiazide kaliuresis.
What to do
Check serum potassium and creatinine at baseline and within the first weeks, then periodically. Adjust or stop potassium chloride according to results.
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-olmesartan
- Aliskiren + Hydrochlorothiazide-olmesartan Contraindicated
- Dofetilide + Hydrochlorothiazide-olmesartan Contraindicated
- Hydrochlorothiazide-olmesartan + Sparsentan Contraindicated
- Acemetacin + Hydrochlorothiazide-olmesartan Major
- Amifostine + Hydrochlorothiazide-olmesartan Major
- Amiloride + Hydrochlorothiazide-olmesartan Major
Other interactions of Potassium chloride
Frequently asked questions
Can I take Hydrochlorothiazide-olmesartan with Potassium chloride?
MediHelp rates the interaction as moderate. Hydrochlorothiazide-olmesartan and Potassium chloride 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. Potassium chloride with an ARB can cause hyperkalemia, while the thiazide tends to lower potassium, so the net effect varies. Risk is higher in renal impairment, diabetes or older age.
How serious is the interaction between Hydrochlorothiazide-olmesartan and Potassium chloride?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Check serum potassium and creatinine at baseline and within the first weeks, then periodically. Adjust or stop potassium chloride according to results.
What other medicines interact with Hydrochlorothiazide-olmesartan?
MediHelp also lists interactions of Hydrochlorothiazide-olmesartan with, for example, Aliskiren, Dofetilide, Sparsentan. The full list is on the Hydrochlorothiazide-olmesartan page.
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