Drug interactions
Ofloxacin + Sodium picosulfate / magnesium oxide / anhydrous citric acid
Severity: Moderate
Ofloxacin and Sodium picosulfate / magnesium oxide / anhydrous citric acid: 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 bowel preparation binds oral ofloxacin and reduces its absorption. Antibiotics may also reduce the laxative efficacy of picosulfate, which needs colonic bacteria for activation, risking an inadequate bowel cleansing.
What this interaction means in plain words
Ofloxacin and Sodium picosulfate / magnesium oxide / anhydrous citric acid 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
Magnesium chelation reduces ofloxacin absorption, and antibiotic suppression of colonic flora reduces conversion of picosulfate to its active form.
What to do
Give ofloxacin at least 2 hours before and not less than 6 hours after the preparation. Consider whether bowel cleansing adequacy may be affected if the antibiotic is given in the days before the procedure.
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 Ofloxacin and Sodium picosulfate / magnesium oxide / anhydrous citric acid, 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 14 days on the web. No card needed.
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 picosulfate / magnesium oxide / anhydrous citric acid?
MediHelp rates the interaction as moderate. Ofloxacin and Sodium picosulfate / magnesium oxide / anhydrous citric acid 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 bowel preparation binds oral ofloxacin and reduces its absorption. Antibiotics may also reduce the laxative efficacy of picosulfate, which needs colonic bacteria for activation, risking an inadequate bowel cleansing.
How serious is the interaction between Ofloxacin and Sodium picosulfate / magnesium oxide / anhydrous citric acid?
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 ofloxacin at least 2 hours before and not less than 6 hours after the preparation. Consider whether bowel cleansing adequacy may be affected if the antibiotic is given in the days before the procedure.
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.
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.
