Sertraline and Warfarin: Drug Interaction Guide

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

Interaction severity: Moderate — caution required

How Sertraline interacts with Warfarin

Sertraline modestly inhibits CYP2C9 and impairs platelet aggregation via serotonin depletion; combination raises INR and adds an antiplatelet effect, increasing bleeding risk.

What you should do

Check INR within 1 week of starting or stopping sertraline; counsel patient on bleeding signs and consider gastroprotection in higher-risk patients.

Key facts

Severity

Moderate — caution required

Mechanism

Sertraline modestly inhibits CYP2C9 and impairs platelet aggregation via serotonin depletion; combination raises INR and...

Action

Check INR within 1 week of starting or stopping sertraline; counsel patient on bleeding signs and consider gastroprotect...

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 Sertraline and Warfarin together?

With caution. Check INR within 1 week of starting or stopping sertraline; counsel patient on bleeding signs and consider gastroprotection in higher-risk patients.

What is the severity of this interaction?

The interaction between Sertraline and Warfarin is classified as Moderate — caution required. Sertraline modestly inhibits CYP2C9 and impairs platelet aggregation via serotonin depletion; combination raises INR and adds an antiplatelet effect, increasing bleeding risk.

What should I do if I'm prescribed both?

Check INR within 1 week of starting or stopping sertraline; counsel patient on bleeding signs and consider gastroprotection in higher-risk patients. Always consult your prescribing clinician — do not stop or change medications without medical guidance.

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