Drug interactions
Sodium sulfate / ?magnesium sulfate / potassium chloride + Telmisartan
Severity: Moderate
Sodium sulfate / ?magnesium sulfate / potassium chloride and Telmisartan: 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-prep solutions cause fluid shifts, volume depletion and electrolyte disturbance. In patients on telmisartan this can precipitate acute kidney injury, and the potassium content adds a minor hyperkalemia risk.
What this interaction means in plain words
Sodium sulfate / ?magnesium sulfate / potassium chloride and Telmisartan 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
Volume depletion from bowel cleansing reduces renal perfusion, which is compounded by angiotensin receptor blockade impairing glomerular autoregulation.
What to do
Ensure adequate hydration and consider withholding telmisartan on the day of the bowel preparation. Check electrolytes and creatinine in high-risk patients.
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 Telmisartan
- Aliskiren + Telmisartan Contraindicated
- Sparsentan + Telmisartan Contraindicated
- Amifostine + Telmisartan Major
- Amiloride + Telmisartan Major
- Amlodipine-benazepril + Telmisartan Major
- Amlodipine-hydrochlorothiazide-valsartan + Telmisartan Major
Frequently asked questions
Can I take Sodium sulfate / ?magnesium sulfate / potassium chloride with Telmisartan?
MediHelp rates the interaction as moderate. Sodium sulfate / ?magnesium sulfate / potassium chloride and Telmisartan 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-prep solutions cause fluid shifts, volume depletion and electrolyte disturbance. In patients on telmisartan this can precipitate acute kidney injury, and the potassium content adds a minor hyperkalemia risk.
How serious is the interaction between Sodium sulfate / ?magnesium sulfate / potassium chloride and Telmisartan?
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 hydration and consider withholding telmisartan on the day of the bowel preparation. Check electrolytes and creatinine in high-risk patients.
What other medicines interact with Telmisartan?
MediHelp also lists interactions of Telmisartan with, for example, Aliskiren, Sparsentan, Amifostine. The full list is on the Telmisartan page.
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