Drug interactions
Magnesium oxide + Mannitol
Severity: Minor
Magnesium oxide and Mannitol: 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
Mannitol-induced osmotic diuresis raises urinary magnesium loss, which could partly offset magnesium supplementation. The effect is usually small and matters mainly with repeated dosing or low baseline magnesium.
What this interaction means in plain words
Magnesium oxide and Mannitol 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 oxide belongs to Gastrointestinal Tract; Mannitol belongs to Cardiovascular.
Why it happens
Osmotic diuresis increases renal magnesium excretion.
What to do
Monitor serum magnesium during repeated mannitol use and adjust supplementation accordingly.
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 Mannitol
Other interactions of Magnesium oxide
- Chloroquine + Magnesium oxide Moderate
- Ciprofloxacin + Magnesium oxide Moderate
- Dolutegravir + Magnesium oxide Moderate
- Doxycycline + Magnesium oxide Moderate
- Eltrombopag + Magnesium oxide Moderate
- Gemifloxacin + Magnesium oxide Moderate
Frequently asked questions
Can I take Magnesium oxide with Mannitol?
MediHelp rates the interaction as minor. Magnesium oxide and Mannitol have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Mannitol-induced osmotic diuresis raises urinary magnesium loss, which could partly offset magnesium supplementation. The effect is usually small and matters mainly with repeated dosing or low baseline magnesium.
How serious is the interaction between Magnesium oxide and Mannitol?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor serum magnesium during repeated mannitol use and adjust supplementation accordingly.
What other medicines interact with Mannitol?
MediHelp also lists interactions of Mannitol with, for example, Dexamethasone-tobramycin, Tobramycin, Dichlorphenamide. The full list is on the Mannitol page.
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