Does Vitamin K Interfere with Warfarin

To ensure that warfarin is effectively thinning your blood, it’s important to eat about the same amount of vitamin K every day. Vitamin K normally helps your blood clot so wounds don’t bleed too much. Warfarin works against vitamin K, making your blood clot more slowly.

What vitamins should not be taken with warfarin?

• Coenzyme Q10 (ubiquinone)
• Dong quai.
• Garlic.
• Ginkgo biloba.
• Ginseng.
• Green tea.
• St. John’s wort.
• Vitamin E.

Can you take vitamin K while on blood thinners?

Changes in the amount of vitamin K in the diet can alter the metabolism of warfarin (Coumadin ®). However, vitamin K does not influence the action of other blood thinners, such as heparin or low molecular weight heparins (Lovenox ®.