Blood Thinners and Food | A Few Tips

When It Comes To Food, Consistency Is The Best Ingredient

Blood clots are very serious, even life threatening, because they may stop the flow of blood to the lungs, the heart, and the brain. Warfarin, also known as Coumadin®, is a medication that helps slow or prevent blood clots from forming. When you take warfarin, it’s very important to keep your diet consistent. A balanced, healthy diet is always recommended, of course, but you can eat what you normally enjoy as long as you do so consistently.

Healthy Choices

When a person learns that they have a blood clot, or that they are at risk for developing a blood clot, they may begin to make healthier choices in their life, including a change to a healthier diet. It’s okay to make the change to a healthier diet, as long as you work with your healthcare provider to monitor your INR and to make sure that you are becoming consistent with your diet. Some of the healthiest foods that you can eat, including foods like broccoli and spinach, are high in vitamin K. You might read or be told that you need to be aware of your vitamin K intake, because vitamin K can interfere with how warfarin works or make it less effective. It’s always very important to understand how different things, like food, might affect how your medication works. However, if you eat these very healthy foods that are rich in vitamin K consistently – in the same amounts over time with no sudden changes – you can enjoy the wonderful nutritional benefits they provide as part of a healthy diet. You should talk with your healthcare provider before making any changes in what you eat. You can also talk to a registered nutritionist to help make sure that your food intake is healthy and consistent. The United States Department of Agriculture has a nutrient database that provides information about vitamin K levels in many of the foods you might choose.


Alcoholic beverages, including hard liquor, beer or wine, also can affect how warfarin works. Experts advise that, as with food, consistency is key here as well. You should avoid drinking too much at any one time and always avoid binge drinking.

Herbs And Supplements

Herbs and dietary supplements, including vitamin and mineral supplements in both pill and liquid form, also may change the way Warfarin works. The amount of vitamin K content in herbs and dietary supplements can vary a lot and be unknown. For this reason, experts recommend that you avoid taking herbs and supplements if you are taking warfarin.

Talk To Your Health Care Provider

If you are taking warfarin, talk to your healthcare provider about what you are eating and also any herbs or dietary supplements you are taking. Your provider will monitor your INR closely to make sure that your blood thinner and your diet are working together in the best way for you.

 Consistency in what you eat is most important. Avoid abrupt and prolonged changes in your diet.

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