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Live Science

Why do leafy green vegetables interact with blood thinners?

Live Science
Summary
Nutrition label

75% Informative

Leafy green vegetables are packed with nutrients such as fiber, vitamins, minerals and antioxidants.

But the verdant veggies can interfere with some medications, such as warfarin, used to prevent blood clots.

Warfarin works by blocking an enzyme that activates vitamin K.

Vitamin K is important because the body uses it to make clotting factors, which are proteins required for a blood clot to form.