Drug interactions
Metolazone + Sodium sulfate / potassium chloride / magnesium sulfate / polyethylene glycol
Severity: Moderate
Metolazone and Sodium sulfate / potassium chloride / magnesium sulfate / polyethylene glycol: 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 preparations cause fluid and electrolyte shifts, and metolazone adds to sodium, potassium and magnesium loss and volume depletion. This raises the risk of electrolyte disturbances, dehydration, renal injury and arrhythmia.
What this interaction means in plain words
Metolazone and Sodium sulfate / potassium chloride / magnesium sulfate / polyethylene glycol 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
Additive fluid and electrolyte depletion from diuresis and osmotic bowel cleansing.
What to do
Consider holding metolazone on the day of bowel preparation, ensure adequate hydration, and check electrolytes and renal function 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 Metolazone
Frequently asked questions
Can I take Metolazone with Sodium sulfate / potassium chloride / magnesium sulfate / polyethylene glycol?
MediHelp rates the interaction as moderate. Metolazone and Sodium sulfate / potassium chloride / magnesium sulfate / polyethylene glycol 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 preparations cause fluid and electrolyte shifts, and metolazone adds to sodium, potassium and magnesium loss and volume depletion. This raises the risk of electrolyte disturbances, dehydration, renal injury and arrhythmia.
How serious is the interaction between Metolazone and Sodium sulfate / potassium chloride / magnesium sulfate / polyethylene glycol?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Consider holding metolazone on the day of bowel preparation, ensure adequate hydration, and check electrolytes and renal function in high-risk patients.
What other medicines interact with Metolazone?
MediHelp also lists interactions of Metolazone with, for example, Amifostine, Amlodipine-hydrochlorothiazide-valsartan, Amlodipine-olmesartan-hydrochlorothiazide. The full list is on the Metolazone page.
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