Drug interactions
Moxifloxacin + Trimagnesium
Severity: Moderate
Moxifloxacin 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 moxifloxacin in the gut and reduce how much is absorbed. Lower antibiotic levels can lead to treatment failure and may promote resistance.
What this interaction means in plain words
Moxifloxacin 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 moxifloxacin by divalent magnesium cations in the gastrointestinal tract, reducing absorption.
What to do
Give oral moxifloxacin at least 2 hours before or 6 hours after magnesium-containing products. Where possible, use an alternative that does not contain cations.
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?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Moxifloxacin and Trimagnesium, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 7 days on the web. No card needed.
Other interactions of Moxifloxacin
- Amiodarone + Moxifloxacin Contraindicated
- Arsenic trioxide + Moxifloxacin Contraindicated
- Disopyramide + Moxifloxacin Contraindicated
- Dofetilide + Moxifloxacin Contraindicated
- Dronedarone + Moxifloxacin Contraindicated
- Droperidol + Moxifloxacin Contraindicated
Frequently asked questions
Can I take Moxifloxacin with Trimagnesium?
MediHelp rates the interaction as moderate. Moxifloxacin 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 moxifloxacin in the gut and reduce how much is absorbed. Lower antibiotic levels can lead to treatment failure and may promote resistance.
How serious is the interaction between Moxifloxacin 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 moxifloxacin at least 2 hours before or 6 hours after magnesium-containing products. Where possible, use an alternative that does not contain cations.
What other medicines interact with Moxifloxacin?
MediHelp also lists interactions of Moxifloxacin with, for example, Amiodarone, Arsenic trioxide, Disopyramide. The full list is on the Moxifloxacin page.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
