Drug interactions
Fosinopril + Sodium sulfate / ?magnesium sulfate / potassium chloride
Severity: Moderate
Fosinopril 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 laxatives cause fluid and electrolyte shifts and volume depletion. With an ACE inhibitor, this raises the risk of acute kidney injury and hypotension, and the potassium content may add to hyperkalemia risk.
What this interaction means in plain words
Fosinopril 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
Volume depletion and electrolyte shifts from the preparation reduce renal perfusion, which is more consequential under ACE inhibition; the potassium content adds to hyperkalemia risk.
What to do
Ensure adequate hydration and consider withholding fosinopril on the day of bowel preparation in high-risk patients. Check renal function and electrolytes afterward if there is vomiting, dehydration or kidney disease.
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 Fosinopril
- Aliskiren + Fosinopril Contraindicated
- Fosinopril + Protein a column Contraindicated
- Fosinopril + Sacubitril / valsartan Contraindicated
- Fosinopril + Sacubitril-valsartan Contraindicated
- Amifostine + Fosinopril Major
- Amiloride + Fosinopril Major
Frequently asked questions
Can I take Fosinopril with Sodium sulfate / ?magnesium sulfate / potassium chloride?
MediHelp rates the interaction as moderate. Fosinopril 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 laxatives cause fluid and electrolyte shifts and volume depletion. With an ACE inhibitor, this raises the risk of acute kidney injury and hypotension, and the potassium content may add to hyperkalemia risk.
How serious is the interaction between Fosinopril 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 hydration and consider withholding fosinopril on the day of bowel preparation in high-risk patients. Check renal function and electrolytes afterward if there is vomiting, dehydration or kidney disease.
What other medicines interact with Fosinopril?
MediHelp also lists interactions of Fosinopril with, for example, Aliskiren, Protein a column, Sacubitril / valsartan. The full list is on the Fosinopril page.
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