Foods that contain vitamin K are the key factor in the diet for warfarin, because this nutrient can interfere with the ability of the drug to prevent blood clots. As the quantity of vitamin K present in the diet can affect the size of the dose of warfarin needed, you should consume a consistent amount of foods containing this vitamin each week. It is not necessary to follow a vitamin K restricted diet. In fact, doing so could potentially cause other side effects such as weak bones. Other dietary considerations include avoiding consuming cranberries in any form, and restricting or totally eliminating alcohol from your diet.
In general, the diet for warfarin involves eating a consistent quantity of vitamin K-rich foods. Sources with a very high vitamin K content include leafy green vegetables such as spinach, kale, and turnip greens. Collard greens, beet greens, and mustard greens are also very high in this nutrient. Other foods with a high quantity of vitamin K include brussel sprouts, parsley, and chard, as well as green tea, broccoli, and lettuce varieties.
Aside from being consistent with the consumption of vitamin K-rich foods, patients should be careful with products containing cranberries and olestra. The diet for warfarin prohibits consuming cranberries and cranberry juice. You should abstain from taking cranberry supplements as well. Foods containing olestra often have vitamin K added in the manufacturing process. If olestra products are a part of your diet, you need to consider them a source of vitamin K.
Certain herbal supplements can affect warfarin as well. Ginseng, St. John’s wart, and ginkgo biloba can cause difficulties. Ginger and garlic supplements can also cause problems, although these herbs are safe to use in cooking. Apprise your physician of all nutritional supplements you take so that he or she can prescribe the appropriate treatment.
Doctors do not advise the consumption of alcohol in the diet for warfarin. Ingesting more than one or two drinks can affect your body’s response to the drug. If you plan to drink, discuss the issue thoroughly with your doctor so you’ll know how much you can safely consume.
Warfarin patients should follow certain precautions in addition to dietary considerations. You should notify your healthcare practitioner you are on this drug before undergoing even a minor dental or medical procedure, such as dental cleanings or a vaccination. Abstain from contact sports and activities that could lead to injuries. It is advisable to wear a bracelet or carry a card that identifies you as being on this medication. You may want to take a warfarin sensitivity test, as the genetic makeup of some patients increases their risk of bleeding from this drug.
