Drug interactions
Gemifloxacin + Sodium sulfate / potassium sulfate / magnesium sulfate
Severity: Moderate
Gemifloxacin 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
The magnesium in this oral bowel preparation binds gemifloxacin in the gut and can substantially decrease its absorption, risking underdosing of the antibiotic.
What this interaction means in plain words
Gemifloxacin 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 gemifloxacin by magnesium cations in the gastrointestinal tract reduces absorption.
What to do
Take gemifloxacin at least 2 hours before the bowel preparation and not within about 6 hours after. Plan the antibiotic dose around the preparation schedule.
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 Gemifloxacin
- Arsenic trioxide + Gemifloxacin Contraindicated
- Dofetilide + Gemifloxacin Contraindicated
- Gemifloxacin + Ibutilide Contraindicated
- Gemifloxacin + Pimozide Contraindicated
- Gemifloxacin + Thioridazine Contraindicated
- Gemifloxacin + Vandetanib Contraindicated
Frequently asked questions
Can I take Gemifloxacin with Sodium sulfate / potassium sulfate / magnesium sulfate?
MediHelp rates the interaction as moderate. Gemifloxacin 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. The magnesium in this oral bowel preparation binds gemifloxacin in the gut and can substantially decrease its absorption, risking underdosing of the antibiotic.
How serious is the interaction between Gemifloxacin 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: Take gemifloxacin at least 2 hours before the bowel preparation and not within about 6 hours after. Plan the antibiotic dose around the preparation schedule.
What other medicines interact with Gemifloxacin?
MediHelp also lists interactions of Gemifloxacin with, for example, Arsenic trioxide, Dofetilide, Ibutilide. The full list is on the Gemifloxacin page.
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