Does Citalopram Interact With Warfarin?

For patients taking warfarin, carefully monitor the international normalized ratio [see Warning and Precautions (5.4) ].

Severity: Moderate

Severity basis: drug interactions section (keywords: monitor, caution). Combining Citalopram (SSRI antidepressant) and Warfarin (Vitamin K antagonist anticoagulant) is classified as a moderate interaction.

What to Do

Use this combination with caution. Your prescriber may monitor you more closely or adjust doses.

From the FDA Label

For patients taking warfarin, carefully monitor the international normalized ratio [see Warning and Precautions (5.4) ].

Source: FDA structured product labeling (set_id 0109f365-bebd-4810-a56f-4451e10245db).

Citalopram

SSRI antidepressant

Brands: Celexa

View Citalopram safety profile

Warfarin

Vitamin K antagonist anticoagulant

Brands: Coumadin, Jantoven

View Warfarin safety profile

Check these against your full medication list in our free Interaction Checker

This information is educational — not medical advice.

This page is provided for general educational purposes and summarizes publicly available data from sources such as the U.S. Food & Drug Administration. It is not a substitute for the judgment of a licensed clinician and should not be used to start, stop, or change any medication. It may be incomplete or out of date, and individual circumstances vary. Always talk with your prescriber or pharmacist about your specific medications and health conditions. If you think you may have a medical emergency, call 911.

Questions About Your Medications?

A licensed OmniRx provider can review your full medication list and help you understand what's safe for you — no office visit required.