Ciprofloxacin and Ferrous Sulfate: Drug Interaction Guide

Quick answer: This combination requires caution. Ciprofloxacin and Ferrous Sulfate can be used together with adjustments and monitoring.

Interaction severity: Moderate — caution required

How Ciprofloxacin interacts with Ferrous Sulfate

Iron forms insoluble chelates with fluoroquinolones in the gastrointestinal tract, reducing ciprofloxacin bioavailability by up to 50%.

What you should do

Separate doses by at least 2 hours before or 6 hours after ciprofloxacin to preserve antibiotic efficacy.

Key facts

Severity

Moderate — caution required

Mechanism

Iron forms insoluble chelates with fluoroquinolones in the gastrointestinal tract, reducing ciprofloxacin bioavailabilit...

Action

Separate doses by at least 2 hours before or 6 hours after ciprofloxacin to preserve antibiotic efficacy.

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 Ciprofloxacin and Ferrous Sulfate together?

With caution. Separate doses by at least 2 hours before or 6 hours after ciprofloxacin to preserve antibiotic efficacy.

What is the severity of this interaction?

The interaction between Ciprofloxacin and Ferrous Sulfate is classified as Moderate — caution required. Iron forms insoluble chelates with fluoroquinolones in the gastrointestinal tract, reducing ciprofloxacin bioavailability by up to 50%.

What should I do if I'm prescribed both?

Separate doses by at least 2 hours before or 6 hours after ciprofloxacin to preserve antibiotic efficacy. Always consult your prescribing clinician — do not stop or change medications without medical guidance.

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