Drug interactions
Olmesartan + Potassium citrate / citric acid
Severity: Moderate
Olmesartan 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
Olmesartan reduces aldosterone-mediated potassium excretion, and potassium supplements add to the potassium load. This may cause hyperkalemia, particularly in patients with renal impairment, diabetes or heart failure.
What this interaction means in plain words
Olmesartan 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
Angiotensin receptor blockade reduces renal potassium excretion while the potassium salt supplies additional potassium.
What to do
Check serum potassium and renal function at baseline and periodically during combined use. Reduce or stop the potassium product 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 Olmesartan
- Aliskiren + Olmesartan Contraindicated
- Olmesartan + Sparsentan Contraindicated
- Aldesleukin + Olmesartan Major
- Amifostine + Olmesartan Major
- Amiloride + Olmesartan Major
- Amlodipine-benazepril + Olmesartan Major
Frequently asked questions
Can I take Olmesartan with Potassium citrate / citric acid?
MediHelp rates the interaction as moderate. Olmesartan 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. Olmesartan reduces aldosterone-mediated potassium excretion, and potassium supplements add to the potassium load. This may cause hyperkalemia, particularly in patients with renal impairment, diabetes or heart failure.
How serious is the interaction between Olmesartan 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: Check serum potassium and renal function at baseline and periodically during combined use. Reduce or stop the potassium product if potassium rises.
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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