Warfarin is a blood-thinning drug used to treat and prevent blood clots. There is no specific warfarin diet. However, certain foods and drinks can make warfarin less effective at preventing blood clots. It is important to pay attention to what you eat while taking warfarin.
One nutrient that can reduce the effectiveness of warfarin is vitamin K. It’s important to be consistent about how much vitamin K you get daily. The appropriate intake of vitamin K for adult men is 120 micrograms (μg). For adult women, it’s 90 Mcg. While eating small amounts of foods high in vitamin K should not cause a problem, avoid eating large amounts of certain foods or drinks, including:
- Brussels sprouts
- Mustard greens
- Green tea
Certain drinks can amplify the effect of warfarin, leading to bleeding problems. Avoid or consume only small amounts of these drinks when taking warfarin:
- Cranberry juice
Talk to your doctor before making any major changes in your diet and before taking any over-the-counter medications, vitamins or herbal supplements. If you can’t eat for several days or have persistent upset stomach, diarrhea or fever, contact your doctor.