Drug interactions
Magnesium supplement + Minocycline
Severity: Moderate
Magnesium supplement 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
Oral magnesium binds minocycline in the gut to form poorly absorbed chelates. This decreases minocycline absorption and can reduce antibacterial efficacy.
What this interaction means in plain words
Magnesium supplement 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.
Why it happens
Chelation of minocycline by magnesium cations in the gastrointestinal tract reduces its absorption.
What to do
Give minocycline at least 2 hours before or 4 hours after magnesium. Monitor clinical response if separation is not possible.
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
Frequently asked questions
Can I take Magnesium supplement with Minocycline?
MediHelp rates the interaction as moderate. Magnesium supplement 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. Oral magnesium binds minocycline in the gut to form poorly absorbed chelates. This decreases minocycline absorption and can reduce antibacterial efficacy.
How serious is the interaction between Magnesium supplement 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: Give minocycline at least 2 hours before or 4 hours after magnesium. Monitor clinical response if separation is not possible.
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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