Is Garlic Safe with warfarin sodium?
Free · No account · based on published sources including NIH ODS, FDA drug labels, and peer-reviewed literature
Avoid garlic supplements while taking warfarin; inform your doctor if you use garlic supplements and monitor INR more frequently.
Why this interaction occurs
Garlic may cause bleeding events when taken alone and may have anticoagulant, antiplatelet, and/or fibrinolytic properties. These effects are expected to be additive to the anticoagulant effects of warfarin sodium.
Evidence
Evidence level: strong.
Data source
FDA Drug Label
Reported safety data
The FDA’s adverse event reporting system (FAERS) has received 3,390,437 reports mentioning warfarin sodium. This reflects reported cases involving the medication in general — not confirmed causation, and not specific to the warfarin sodium + supplement combination on this page.
FAERS reports are voluntary and cannot prove that a drug caused an event. Do not use report counts to assess the safety of this specific drug-supplement pair.
Frequently asked questions
Related interactions
All Garlic interactions → · All warfarin sodium interactions →
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Educational only — not medical advice.
Always confirm with your doctor or pharmacist.