Drug interactions
Olmesartan + Potassium chloride
Severity: Moderate
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 adds a potassium load while olmesartan reduces renal potassium elimination. The combination can cause hyperkalemia with risk of arrhythmia, especially in patients with kidney disease, diabetes or older age.
What this interaction means in plain words
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.
Olmesartan belongs to Cardiovascular; Potassium chloride belongs to Gastrointestinal Tract.
Why it happens
Angiotensin receptor blockade decreases aldosterone-mediated potassium excretion, compounding the exogenous potassium load.
What to do
Monitor serum potassium and creatinine soon after starting and periodically thereafter. Adjust or discontinue potassium chloride if hyperkalemia develops.
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 Olmesartan
- Aliskiren + Olmesartan Contraindicated
- Olmesartan + Sparsentan Contraindicated
- Aldesleukin + Olmesartan Major
- Amifostine + Olmesartan Major
- Amiloride + Olmesartan Major
- Amlodipine-benazepril + Olmesartan Major
Other interactions of Potassium chloride
Frequently asked questions
Can I take Olmesartan with Potassium chloride?
MediHelp rates the interaction as moderate. 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 adds a potassium load while olmesartan reduces renal potassium elimination. The combination can cause hyperkalemia with risk of arrhythmia, especially in patients with kidney disease, diabetes or older age.
How serious is the interaction between 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: Monitor serum potassium and creatinine soon after starting and periodically thereafter. Adjust or discontinue potassium chloride if hyperkalemia develops.
What other medicines interact with Olmesartan?
MediHelp also lists interactions of Olmesartan with, for example, Aliskiren, Sparsentan, Aldesleukin. The full list is on the Olmesartan page.
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