If you are taking Coumadin, the brand name for the blood thinner warfarin, you should pay attention to your diet because some foods can change the drug's effectiveness. Coumadin is used to prevent blood clots in those who've already had one or those who are at risk for a clot that might cause a heart attack or a stroke. Eating too much of the wrong foods can increase the risk of blood clots or bleeding problems. Talk to your doctor about the right diet for you while taking Coumadin.
Foods Rich in Vitamin K
Vitamin K, typically found in leafy greens, normally helps your blood to clot so that injuries heal properly. If you are taking Coumadin, vitamin K works against the blood-thinning properties of the drug. You do not need to eliminate vitamin K from your diet, but you should avoid eating large amounts of it so it doesn't interfere with your prescription, according to MayoClinic.com. For that reason, limit yourself to small servings of these food that are rich in vitamin K: kale, spinach, broccoli, cabbage, endive, lettuce, watercress, scallions, turnip greens, Brussels sprouts, parsley, collards, mustard greens, Swiss chard, liver, mayonnaise and any kind of vegetable oil.
Beverages
Green tea contains vitamin K and should be limited. But alcohol and cranberry juice can also interfere with your medication. Avoid or limit these beverages to prevent problems when taking Coumadin. You should also avoid herbal teas that contain tonka beans, sweet clover or sweet woodruff, according to Drugs.com.
Dietary Considerations
It's important to maintain consistency in your diet while taking Coumadin because so many foods can affect the drug. Do not make major changes to your diet or go on a weight-loss program while taking Coumadin without consulting your doctor first. If your weight does change, or you are unable to eat for several days, you should alert your doctor in case he needs to change the dose of your medication. You should also talk to your doctor before taking any medication, herbal products or supplements.
When To Call the Doctor
Coumadin can cause serious side effects, including dangerous bleeding problems. Be alert for signs of trouble, and call your doctor if you suspect a problem. Be sure to call your doctor if you have ongoing digestive difficulties such as diarrhea or vomiting, fever, chills, body aches, flu symptoms or infection. You should also contact your doctor if you hit your head or have a fall; develop pain or swelling around an injury or injection; experience severe bruising, nosebleeds, bleeding gums or unusual bleeding; have bloody or brown urine or bloody stool; experience headache, dizziness or weakness; or if you become pregnant.
