Drug interactions
Magnesium oxide + Minocycline
Severity: Moderate
Magnesium oxide and Minocycline: 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
Magnesium oxide, used as a supplement or antacid, can bind oral minocycline and decrease its absorption. This may lower antibiotic exposure and efficacy.
What this interaction means in plain words
Magnesium oxide and Minocycline 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.
Magnesium oxide belongs to Gastrointestinal Tract; Minocycline belongs to Anti Bacterial.
Why it happens
Chelation by magnesium and an increase in gastric pH reduce minocycline absorption.
What to do
Take minocycline at least 2 hours before or 4 hours after magnesium oxide. Monitor clinical response.
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 Minocycline
- Acitretin + Minocycline Contraindicated
- Isotretinoin + Minocycline Contraindicated
- Cholera vaccine + Minocycline Major
- Methoxyflurane + Minocycline Major
- Minocycline + Palovarotene Major
- Minocycline + Pexidartinib Major
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 Minocycline?
MediHelp rates the interaction as moderate. Magnesium oxide and Minocycline 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. Magnesium oxide, used as a supplement or antacid, can bind oral minocycline and decrease its absorption. This may lower antibiotic exposure and efficacy.
How serious is the interaction between Magnesium oxide and Minocycline?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Take minocycline at least 2 hours before or 4 hours after magnesium oxide. Monitor clinical response.
What other medicines interact with Minocycline?
MediHelp also lists interactions of Minocycline with, for example, Acitretin, Isotretinoin, Cholera vaccine. The full list is on the Minocycline page.
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