Avoid sudden changes in your diet. Vitamin K decreases the effects of Coumadin. Large amounts of vitamin K are found in foods such as liver, broccoli, brussels sprouts, and green leafy vegetables (e.g., spinach, Swiss chard, coriander, collards, cabbage). Do not change the amount of these foods in your diet without first talking to your doctor.
Thanks. Fortunatly I don't take Coumadin.