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Quinolone and Sucralfate: Drug Interaction Guide

Quick answer: This combination requires caution. Quinolone and Sucralfate can be used together with adjustments and monitoring.

Interaction severity: Moderate — caution required

How Quinolone interacts with Sucralfate

Sucralfate contains aluminum that chelates fluoroquinolones in the GI tract, reducing oral absorption by up to 90% and causing antibiotic treatment failure.

What you should do

Separate doses: take fluoroquinolone at least 2 hours before or 6 hours after sucralfate. The same applies to antacids and oral iron/calcium/zinc.

Key facts

Severity

Moderate — caution required

Mechanism

Sucralfate contains aluminum that chelates fluoroquinolones in the GI tract, reducing oral absorption by up to 90% and c...

Action

Separate doses: take fluoroquinolone at least 2 hours before or 6 hours after sucralfate. The same applies to antacids a...

Important medical disclaimer: This page provides educational information about drug interactions for general reference. It is not a substitute for professional medical advice, diagnosis, or treatment. Always discuss your specific medications with a qualified healthcare provider before starting, stopping, or changing any treatment. About our editorial team.

Frequently asked questions

Can I take Quinolone and Sucralfate together?

With caution. Separate doses: take fluoroquinolone at least 2 hours before or 6 hours after sucralfate. The same applies to antacids and oral iron/calcium/zinc.

What is the severity of this interaction?

The interaction between Quinolone and Sucralfate is classified as Moderate — caution required. Sucralfate contains aluminum that chelates fluoroquinolones in the GI tract, reducing oral absorption by up to 90% and causing antibiotic treatment failure.

What should I do if I'm prescribed both?

Separate doses: take fluoroquinolone at least 2 hours before or 6 hours after sucralfate. The same applies to antacids and oral iron/calcium/zinc. Always consult your prescribing clinician — do not stop or change medications without medical guidance.

Last reviewed: by iMedic Medical Editorial Team. Our editorial process.