With millions of Americans taking Coumadin (Warfarin) for high blood pressure, I thought this medication might be a good one to highlight. When you take Coumadin it interferes with the formation of a substance called prothrombin in the liver (this is why most doctors will have you take a prothrombin time test before giving you a prescription for Coumadin). is a naturally-occurring substance that is in foods we eat every day. makes blood more likely to clot, while Coumadin interferes with blood clotting.
Recommendations from nearly all the dietitians I have worked with are to not avoid eating foods high in but to consume a consistent amount of each day. For example, eat a healthy serving of greens often, but avoid eating a plateful of greens one day and no greens the rest of the week.
Foods high in include kale, Swiss chard, collard greens, spinach, Brussels sprouts, watercress, endive, raw scallions, broccoli, coleslaw with dressing, cabbage, and asparagus. Ask your doctor or a dietitian if you have more questions about Coumadin and .