Levofloxacin and Theophylline: Drug Interaction Guide

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

Interaction severity: Moderate — caution required

How Levofloxacin interacts with Theophylline

Fluoroquinolones may reduce theophylline clearance through CYP1A2-related effects, though the magnitude varies by agent. Elevated theophylline can cause nausea, arrhythmias, and seizures.

What you should do

Monitor theophylline concentrations and toxicity, especially in older adults or high-dose therapy. Consider an alternative antibiotic if risk is high.

Key facts

Severity

Moderate — caution required

Mechanism

Fluoroquinolones may reduce theophylline clearance through CYP1A2-related effects, though the magnitude varies by agent....

Action

Monitor theophylline concentrations and toxicity, especially in older adults or high-dose therapy. Consider an alternati...

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 Levofloxacin and Theophylline together?

With caution. Monitor theophylline concentrations and toxicity, especially in older adults or high-dose therapy. Consider an alternative antibiotic if risk is high.

What is the severity of this interaction?

The interaction between Levofloxacin and Theophylline is classified as Moderate — caution required. Fluoroquinolones may reduce theophylline clearance through CYP1A2-related effects, though the magnitude varies by agent. Elevated theophylline can cause nausea, arrhythmias, and seizures.

What should I do if I'm prescribed both?

Monitor theophylline concentrations and toxicity, especially in older adults or high-dose therapy. Consider an alternative antibiotic if risk is high. Always consult your prescribing clinician — do not stop or change medications without medical guidance.

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