Drug interactions
Olmesartan + Sodium sulfate / ?magnesium sulfate / potassium chloride
Severity: Moderate
Olmesartan and Sodium sulfate / ?magnesium sulfate / 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
Bowel preparation causes fluid loss and electrolyte shifts, and with an ARB this raises the risk of volume depletion, acute kidney injury and electrolyte disturbance. Hypotension and renal impairment are the main concerns.
What this interaction means in plain words
Olmesartan and Sodium sulfate / ?magnesium sulfate / 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.
Why it happens
Osmotic fluid and electrolyte losses reduce renal perfusion, which is poorly tolerated with angiotensin receptor blockade.
What to do
Ensure adequate oral hydration during preparation and consider withholding olmesartan on the day of bowel preparation in high-risk patients. Check renal function and electrolytes if symptoms occur.
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 Sodium sulfate / ?magnesium sulfate / potassium chloride?
MediHelp rates the interaction as moderate. Olmesartan and Sodium sulfate / ?magnesium sulfate / 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. Bowel preparation causes fluid loss and electrolyte shifts, and with an ARB this raises the risk of volume depletion, acute kidney injury and electrolyte disturbance. Hypotension and renal impairment are the main concerns.
How serious is the interaction between Olmesartan and Sodium sulfate / ?magnesium sulfate / 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: Ensure adequate oral hydration during preparation and consider withholding olmesartan on the day of bowel preparation in high-risk patients. Check renal function and electrolytes if symptoms occur.
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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