Drug interactions
Ofloxacin + Zinc
Severity: Moderate
Ofloxacin and Zinc: 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 zinc binds ofloxacin in the gut and reduces its absorption, which may lead to subtherapeutic antibiotic levels and treatment failure. The effect applies to zinc-containing supplements and multivitamins taken at the same time.
What this interaction means in plain words
Ofloxacin and Zinc 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.
Ofloxacin belongs to Anti Bacterial; Zinc belongs to Gastrointestinal Tract.
Why it happens
Chelation of ofloxacin by the divalent zinc cation in the gastrointestinal tract, forming poorly absorbed complexes.
What to do
Give oral ofloxacin at least 2 hours before or 2 hours after zinc-containing products.
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
Other interactions of Zinc
- Alendronate + Zinc Moderate
- Baloxavir marboxil + Zinc Moderate
- Cefalexin + Zinc Moderate
- Ciprofloxacin + Zinc Moderate
- Delafloxacin + Zinc Moderate
- Dolutegravir + Zinc Moderate
Frequently asked questions
Can I take Ofloxacin with Zinc?
MediHelp rates the interaction as moderate. Ofloxacin and Zinc 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 zinc binds ofloxacin in the gut and reduces its absorption, which may lead to subtherapeutic antibiotic levels and treatment failure. The effect applies to zinc-containing supplements and multivitamins taken at the same time.
How serious is the interaction between Ofloxacin and Zinc?
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 2 hours after zinc-containing products.
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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