SN instructed that is important to keep in mind that consistency is the key when regulating your Coumadin diet. Unless your doctor instructs you to, you should not try to omit all Vitamin K from your diet. Vitamin K foods are important to the overall health of your body by strengthening bones and improving the health of your arteries. Vitamin K is Coumadin's antidote so managing your intake is an important factor in staying therapeutic. Some foods that have high Vitamin K include: Cabbage, Broccoli, Spinach, Escarole, Turnip Greens, Lettuce, Brussels, Sprouts, Endive, Kale, Cauliflower, among others.