Blood-thinning Supplements And Foods

Blood-thinning supplements are sometimes prescribed when you have insufficient blood flow to the brain or problems with your heart or blood vessels. They thin your blood to prevent clotting and can reduce your risk of stroke and heart attack. Two primary forms of blood thinners are aspirin, or anti-platelet drugs, and anti-coagulants such as warfarin and heparin. Blood thinners can interact with foods and other medications, so tell your doctor about any supplements you're taking.

Vitamin K

Foods that contain high amounts of vitamin K can keep warfarin from working effectively, according to the Mayo Clinic website. Small portions of vitamin K foods should not cause any problems, but avoid eating large amounts of kale, spinach, chard, collards or mustard greens. In addition to dark leafy vegetables, sources of vitamin K include Brussels sprouts, green tea and parsley.

Drinks

Because warfarin allows your blood to run freely, you need to avoid beverages that increase blood flow. Cranberry juice taken in small amounts should not cause any complications, but avoid drinking a lot. Alcoholic drinks and grapefruit juice -- as well as whole grapefruit -- inhibits warfarin metabolism, as well.

Herbs

Dietary supplements and a range of herbs can interfere with blood thinners by affecting your blood-count readings, which are important in gauging the dosage of your treatment. According to the National Institutes of Health, many herbal products interact negatively with blood thinners, so it's best to stay safe and not use any. Herbs that interact with warfarin include horse chestnut, garlic, ginger, wheat grass and turmeric. Other herbs you should avoid include red clover, St. John's wort, licorice and gingko.

Changes

Blood thinners are designed to work with your system and your normal diet. The most important thing to remember when you're taking a blood thinner is to stick to your normal routines, according to the American Heart Association. Consistency is vital as your doctor tracks the progress of your blood circulation.