What are blood thinners?

A common name for an anticoagulant agent used to prevent the formation of blood clots. Blood-thinners do not really thin the blood. They prevent it from clotting. Blood-thinners (anticoagulants) have various uses. Some are used for the prophylaxis (prevention) of thromboembolic disorders; others are used for the treatment of thromboembolism. (Thrombi are clots. Emboli are clots that break free, travel through the bloodstream, and lodge in a vessel.) The anticoagulant drugs used for these clinical purposes include:
•    Intravenous heparin -- which acts by inactivating thrombin and several other clotting factors required for a clot to form;
•    Oral anticoagulants such as warfarin and dicoumarol -- which act by inhibiting the liver's production of vitamin K dependent factors crucial to clotting.
Anticoagulant solutions are also used for the preservation of stored whole blood and blood fractions. These anticoagulants include heparin and acid citrate dextrose (commonly called ACD).
Newer anticoagulants with less risk of bleeding include:
•    dabigatran (Pradaxa)
•    apixaban (Eliquis)
•    rivaroxaban (Xarelto)

Anticoagulants are also used to keep laboratory blood specimens from clotting. These agents include not only heparin but also several agents that make calcium ions unavailable to the clotting process and so prevent the formation of clots; these agents include ethylenediaminetetraacetic acid (commonly called EDTA), citrate, oxalate and fluoride.
Natural Blood Thinners
Certain foods and herbs are natural anticoagulants and can help prevent your blood from clotting. These include:
•    garlic
•    ginger
•    celery seed
•    aniseed
Foods rich in vitamin E are also natural blood thinners. A number of oils contain vitamin E, such as olive, corn, soybean, and wheat germ. Other food sources of vitamin E include:
•    spinach
•    tomatoes
•    mangoes
•    kiwis
•    peanut butter
•    almonds
•    sunflower seeds
•    broccoli
Natural anticoagulants can be beneficial to your heart health, but consume them with caution. Check with your doctor before eating these foods if you’re taking a blood-thinning medication.