Levothyroxine and Sertraline: Drug Interaction Guide

Quick answer: Levothyroxine and Sertraline have a minor interaction — typically manageable with awareness.

Interaction severity: Minor — typically manageable

How Levothyroxine interacts with Sertraline

Sertraline has been reported to increase levothyroxine requirements, possibly through altered thyroid hormone metabolism or protein binding. The effect is usually modest but clinically relevant in some patients.

What you should do

Monitor TSH after starting or stopping sertraline. Adjust levothyroxine dose according to thyroid function tests and symptoms.

Key facts

Severity

Minor — typically manageable

Mechanism

Sertraline has been reported to increase levothyroxine requirements, possibly through altered thyroid hormone metabolism...

Action

Monitor TSH after starting or stopping sertraline. Adjust levothyroxine dose according to thyroid function tests and sym...

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 Levothyroxine and Sertraline together?

Usually yes, with awareness. Monitor TSH after starting or stopping sertraline. Adjust levothyroxine dose according to thyroid function tests and symptoms.

What is the severity of this interaction?

The interaction between Levothyroxine and Sertraline is classified as Minor — typically manageable. Sertraline has been reported to increase levothyroxine requirements, possibly through altered thyroid hormone metabolism or protein binding. The effect is usually modest but clinically relevant in some patients.

What should I do if I'm prescribed both?

Monitor TSH after starting or stopping sertraline. Adjust levothyroxine dose according to thyroid function tests and symptoms. Always consult your prescribing clinician — do not stop or change medications without medical guidance.

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