Amitriptyline and Bupropion: Drug Interaction Guide

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

Interaction severity: Moderate — caution required

How Amitriptyline interacts with Bupropion

Bupropion potently inhibits CYP2D6, reducing clearance of amitriptyline and its active metabolite nortriptyline, increasing anticholinergic effects and lowering seizure threshold.

What you should do

Reduce amitriptyline dose by 25-50% when adding bupropion, monitor TCA serum levels and watch for anticholinergic toxicity or seizures.

Key facts

Severity

Moderate — caution required

Mechanism

Bupropion potently inhibits CYP2D6, reducing clearance of amitriptyline and its active metabolite nortriptyline, increas...

Action

Reduce amitriptyline dose by 25-50% when adding bupropion, monitor TCA serum levels and watch for anticholinergic toxici...

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 Amitriptyline and Bupropion together?

With caution. Reduce amitriptyline dose by 25-50% when adding bupropion, monitor TCA serum levels and watch for anticholinergic toxicity or seizures.

What is the severity of this interaction?

The interaction between Amitriptyline and Bupropion is classified as Moderate — caution required. Bupropion potently inhibits CYP2D6, reducing clearance of amitriptyline and its active metabolite nortriptyline, increasing anticholinergic effects and lowering seizure threshold.

What should I do if I'm prescribed both?

Reduce amitriptyline dose by 25-50% when adding bupropion, monitor TCA serum levels and watch for anticholinergic toxicity or seizures. Always consult your prescribing clinician — do not stop or change medications without medical guidance.

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