Drug interactions
Moxifloxacin + Sodium sulfate / potassium sulfate / magnesium sulfate
Severity: Moderate
Moxifloxacin and Sodium sulfate / potassium sulfate / magnesium sulfate: 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 bowel preparations containing magnesium can bind moxifloxacin in the gut and reduce its absorption. This may result in lower antibiotic exposure and treatment failure.
What this interaction means in plain words
Moxifloxacin and Sodium sulfate / potassium sulfate / magnesium sulfate 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 magnesium in the gastrointestinal tract, reducing absorption.
What to do
Give oral moxifloxacin at least 2 hours before and not sooner than 6 hours after the bowel preparation dose.
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 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 Sodium sulfate / potassium sulfate / magnesium sulfate?
MediHelp rates the interaction as moderate. Moxifloxacin and Sodium sulfate / potassium sulfate / magnesium sulfate 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 bowel preparations containing magnesium can bind moxifloxacin in the gut and reduce its absorption. This may result in lower antibiotic exposure and treatment failure.
How serious is the interaction between Moxifloxacin and Sodium sulfate / potassium sulfate / magnesium sulfate?
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 and not sooner than 6 hours after the bowel preparation dose.
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.
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