Moxifloxacin and Zinc Sulfate Interaction
Drug interaction information between Moxifloxacin and Zinc Sulfate.
Moxifloxacin and Zinc Sulfate have a documented minor interaction in FDA labeling.
FDA drug labeling documents a minor-severity interaction between Moxifloxacin and Zinc Sulfate. Major interactions are generally avoided, moderate ones may need monitoring or a dose adjustment, and minor ones are usually low-risk. This page shows the documented mechanism and guidance. Label-documented interactions are not a complete safety review, so always confirm your own medications with a pharmacist or doctor. Educational information, not medical advice.
How They Interact
Zinc binds to the antibiotic in your digestive tract, preventing the drug from reaching the rest of your body to treat infection.
What To Do
Avoid taking zinc supplements at the same time as this antibiotic to ensure you get the full dose.
FDA Label Information
Oral administration of moxifloxacin hydrochloride with antacids containing aluminum or magnesium, with sucralfate, with metal cations such as iron, or with multivitamins containing iron or zinc, or with formulations containing divalent and trivalent cations such as didanosine buffered tablets for oral suspension or the pediatric powder for oral solution, may substantially interfere with the absorption of moxifloxacin hydrochloride, resulting in systemic concentrations considerably lower than desired.
Moxifloxacin Also Interacts With
- Lefamulin moderate
- Warfarin minor
- Sotalol minor
- Sucralfate minor
- Clozapine minor
Zinc Sulfate Also Interacts With
- Baloxavir Marboxil moderate
- Delafloxacin minor
- Levofloxacin minor
- Tetracycline minor
Frequently Asked Questions
Can I take Moxifloxacin and Zinc Sulfate together?
This is a minor interaction. Avoid taking zinc supplements at the same time as this antibiotic to ensure you get the full dose.
How serious is the interaction between Moxifloxacin and Zinc Sulfate?
This interaction is classified as "minor" severity by the FDA. Minor interactions are unlikely to cause significant problems but should still be mentioned to your healthcare provider.
Why do Moxifloxacin and Zinc Sulfate interact?
Zinc binds to the antibiotic in your digestive tract, preventing the drug from reaching the rest of your body to treat infection.
Understanding the Moxifloxacin and Zinc Sulfate Interaction
FDA-approved prescribing information for these two drugs flags their combination as a minor-severity interaction. Moxifloxacin belongs to the Fluoroquinolone Antibiotic class and Zinc Sulfate belongs to the Mineral Supplement class - two categories that can collide when co-prescribed. The mechanism described in FDA labeling is: Zinc binds to the antibiotic in your digestive tract, preventing the drug from reaching the rest of your body to treat infection. Severity tiers matter: major flags generally advise avoidance, moderate flags often require monitoring or dose adjustment, and minor flags may only call for awareness.
Context around a specific patient determines real-world impact. Moxifloxacin has 10 total documented interactions on file in this dataset, and Zinc Sulfate has 5. Each additional medication compounds the interaction surface, which is why pharmacists run full-profile checks rather than evaluating one pair at a time. FDA-derived guidance for this pair is: Avoid taking zinc supplements at the same time as this antibiotic to ensure you get the full dose. Timing of doses, renal and hepatic function, age, and other concurrent prescriptions all shape whether a labeled interaction matters clinically.
An interaction flag is not a verdict. A large share of labeled interactions are managed routinely in clinical practice, the fix may be as simple as spacing doses or adding a monitoring test. Others require the prescriber to choose a different medication entirely. This page surfaces FDA-sourced labeling and openFDA data for educational purposes only; it is not medical advice and cannot account for your full clinical picture. Never start, stop, or adjust either Moxifloxacin or Zinc Sulfate based on a web page, speak with your prescriber or pharmacist before making any change.
Sources: FDA Drug Labels (SPL) via openFDA (2026). This is for informational purposes only and is not medical advice. Always consult your healthcare provider about drug interactions.
Read our methodology - how this data is sourced, computed, and verified.