Drug interactions
Levofloxacin + Trimagnesium
Severity: Moderate
Levofloxacin and Trimagnesium: 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 salts bind levofloxacin in the gut and reduce its absorption, which may lead to subtherapeutic antibiotic levels and treatment failure. The interaction applies to oral dosing of both agents.
What this interaction means in plain words
Levofloxacin and Trimagnesium 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 levofloxacin by magnesium (a multivalent cation) in the gastrointestinal tract, reducing absorption.
What to do
Give oral levofloxacin at least 2 hours before or 2 hours after magnesium-containing products, and use a longer gap if the product label requires it. Consider an alternative to the magnesium product during the antibiotic course.
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 Levofloxacin
- Dronedarone + Levofloxacin Contraindicated
- Ibutilide + Levofloxacin Contraindicated
- Levofloxacin + Thioridazine Contraindicated
- Levofloxacin + Vandetanib Contraindicated
- Levofloxacin + Ziprasidone Contraindicated
- Adagrasib + Levofloxacin Major
Frequently asked questions
Can I take Levofloxacin with Trimagnesium?
MediHelp rates the interaction as moderate. Levofloxacin and Trimagnesium 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 salts bind levofloxacin in the gut and reduce its absorption, which may lead to subtherapeutic antibiotic levels and treatment failure. The interaction applies to oral dosing of both agents.
How serious is the interaction between Levofloxacin and Trimagnesium?
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 oral levofloxacin at least 2 hours before or 2 hours after magnesium-containing products, and use a longer gap if the product label requires it. Consider an alternative to the magnesium product during the antibiotic course.
What other medicines interact with Levofloxacin?
MediHelp also lists interactions of Levofloxacin with, for example, Dronedarone, Ibutilide, Thioridazine. The full list is on the Levofloxacin page.
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