Drug interactions
Ofloxacin + Sodium sulfate / ?magnesium sulfate / potassium chloride
Severity: Moderate
Ofloxacin and Sodium sulfate / ?magnesium sulfate / potassium chloride: 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 bind ofloxacin in the gut and can substantially reduce its absorption. This may lead to subtherapeutic antibiotic levels and treatment failure.
What this interaction means in plain words
Ofloxacin and Sodium sulfate / ?magnesium sulfate / potassium chloride 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 ofloxacin by magnesium cations in the gastrointestinal tract, reducing absorption.
What to do
Give oral ofloxacin at least 2 hours before or 6 hours after the bowel preparation. Avoid dosing during the preparation period if the infection is serious.
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 Ofloxacin
- Ofloxacin + Thioridazine Contraindicated
- Adagrasib + Ofloxacin Major
- Amiodarone + Ofloxacin Major
- Amisulpride + Ofloxacin Major
- Anagrelide + Ofloxacin Major
- Arsenic trioxide + Ofloxacin Major
Frequently asked questions
Can I take Ofloxacin with Sodium sulfate / ?magnesium sulfate / potassium chloride?
MediHelp rates the interaction as moderate. Ofloxacin and Sodium sulfate / ?magnesium sulfate / potassium chloride 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 bind ofloxacin in the gut and can substantially reduce its absorption. This may lead to subtherapeutic antibiotic levels and treatment failure.
How serious is the interaction between Ofloxacin and Sodium sulfate / ?magnesium sulfate / potassium chloride?
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 ofloxacin at least 2 hours before or 6 hours after the bowel preparation. Avoid dosing during the preparation period if the infection is serious.
What other medicines interact with Ofloxacin?
MediHelp also lists interactions of Ofloxacin with, for example, Thioridazine, Adagrasib, Amiodarone. The full list is on the Ofloxacin page.
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