Drug interactions
Magnesium citrate + Metolazone
Severity: Minor
Magnesium citrate and Metolazone: minor 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
Metolazone, a thiazide-like diuretic, increases urinary magnesium loss and can cause hypomagnesemia, particularly when combined with loop diuretics. Occasional magnesium citrate use is unlikely to be affected meaningfully.
What this interaction means in plain words
Magnesium citrate and Metolazone have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Magnesium citrate belongs to Gastrointestinal Tract; Metolazone belongs to Cardiovascular.
Why it happens
Metolazone inhibits distal tubular sodium reabsorption and increases renal magnesium excretion.
What to do
No action is needed for occasional laxative use. Monitor serum magnesium and potassium in patients on metolazone and replace if low.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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Other interactions of Magnesium citrate
- Ciprofloxacin + Magnesium citrate Major
- Baloxavir marboxil + Magnesium citrate Moderate
- Bictegravir + Magnesium citrate Moderate
- Cabotegravir + Magnesium citrate Moderate
- Cholecalciferol + Magnesium citrate Moderate
- Deferiprone + Magnesium citrate Moderate
Other interactions of Metolazone
Frequently asked questions
Can I take Magnesium citrate with Metolazone?
MediHelp rates the interaction as minor. Magnesium citrate and Metolazone have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Metolazone, a thiazide-like diuretic, increases urinary magnesium loss and can cause hypomagnesemia, particularly when combined with loop diuretics. Occasional magnesium citrate use is unlikely to be affected meaningfully.
How serious is the interaction between Magnesium citrate and Metolazone?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No action is needed for occasional laxative use. Monitor serum magnesium and potassium in patients on metolazone and replace if low.
What other medicines interact with Magnesium citrate?
MediHelp also lists interactions of Magnesium citrate with, for example, Ciprofloxacin, Baloxavir marboxil, Bictegravir. The full list is on the Magnesium citrate page.
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