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What foods should I avoid when taking warfarin?

Warfarin is a blood-thinning medication that helps treat and prevent blood clots. There is no specific warfarin diet. However, certain foods and beverages can affect the way warfarin may work. It's important to pay attention to what you eat while taking warfarin.

One nutrient that can lessen warfarin's effectiveness is vitamin K. It's important to be consistent in how much vitamin K you get daily. While eating small amounts of foods that are rich in vitamin K shouldn't cause a problem, avoid eating or drinking large amounts of:
  • cranberries or cranberry juice
  • lettuce
  • endive
  • spinach
  • kale
  • turnip greens
  • collard greens
  • mustard greens
  • cabbage
  • asparagus
  • broccoli
  • brussels sprouts
  • green onions
  • parsley
  • soybean oil
  • soybeans

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.