Sucralfate and Ciprofloxacin Interaction
Drug interaction information between Sucralfate and Ciprofloxacin.
Sucralfate and Ciprofloxacin have a documented minor interaction in FDA labeling.
FDA drug labeling documents a minor-severity interaction between Sucralfate and Ciprofloxacin. 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
Taking sucralfate at the same time as ciprofloxacin prevents the antibiotic from being fully absorbed into your blood. This can make the antibiotic less effective at fighting your infection.
What To Do
Take ciprofloxacin at least 2 hours before you take your dose of sucralfate. This timing helps your body absorb the antibiotic properly.
FDA Label Information
In all case studies to date (cimetidine, ciprofloxacin, digoxin, norfloxacin, ofloxacin, and ranitidine), dosing the concomitant medication 2 hours before sucralfate eliminated the interaction.
Sucralfate Also Interacts With
- Theophylline major
- Naproxen moderate
- Warfarin minor
- Ketoconazole minor
- Ofloxacin minor
Ciprofloxacin Also Interacts With
- Tizanidine major
- Cyclosporine minor
- Theophylline minor
- Carbamazepine minor
- Clozapine minor
Frequently Asked Questions
Can I take Sucralfate and Ciprofloxacin together?
This is a minor interaction. Take ciprofloxacin at least 2 hours before you take your dose of sucralfate. This timing helps your body absorb the antibiotic properly.
How serious is the interaction between Sucralfate and Ciprofloxacin?
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 Sucralfate and Ciprofloxacin interact?
Taking sucralfate at the same time as ciprofloxacin prevents the antibiotic from being fully absorbed into your blood. This can make the antibiotic less effective at fighting your infection.
Understanding the Sucralfate and Ciprofloxacin Interaction
FDA-approved prescribing information for these two drugs flags their combination as a minor-severity interaction. Sucralfate belongs to the Mucosal Protective Agent class and Ciprofloxacin belongs to the Fluoroquinolone Antibiotic class - two categories that can collide when co-prescribed. The mechanism described in FDA labeling is: Taking sucralfate at the same time as ciprofloxacin prevents the antibiotic from being fully absorbed into your blood. 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. Sucralfate has 20 total documented interactions on file in this dataset, and Ciprofloxacin has 14. 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: Take ciprofloxacin at least 2 hours before you take your dose of sucralfate. 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 Sucralfate or Ciprofloxacin 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.