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Carbamazepine and Clarithromycin: Drug Interaction Guide

Quick answer: This is a major interaction — avoid combining Carbamazepine and Clarithromycin unless specifically directed by your doctor.

Interaction severity: Major — avoid combination

How Carbamazepine interacts with Clarithromycin

Clarithromycin is a potent CYP3A4 inhibitor that reduces carbamazepine clearance, leading to elevated levels and risk of ataxia, diplopia, and CNS toxicity.

What you should do

Avoid combination; substitute azithromycin or another non-macrolide antibiotic. If unavoidable, monitor carbamazepine levels closely and reduce dose.

Key facts

Severity

Major — avoid combination

Mechanism

Clarithromycin is a potent CYP3A4 inhibitor that reduces carbamazepine clearance, leading to elevated levels and risk of...

Action

Avoid combination; substitute azithromycin or another non-macrolide antibiotic. If unavoidable, monitor carbamazepine le...

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 Carbamazepine and Clarithromycin together?

No — this combination should generally be avoided. Avoid combination; substitute azithromycin or another non-macrolide antibiotic. If unavoidable, monitor carbamazepine levels closely and reduce dose.

What is the severity of this interaction?

The interaction between Carbamazepine and Clarithromycin is classified as Major — avoid combination. Clarithromycin is a potent CYP3A4 inhibitor that reduces carbamazepine clearance, leading to elevated levels and risk of ataxia, diplopia, and CNS toxicity.

What should I do if I'm prescribed both?

Avoid combination; substitute azithromycin or another non-macrolide antibiotic. If unavoidable, monitor carbamazepine levels closely and reduce dose. Always consult your prescribing clinician — do not stop or change medications without medical guidance.

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