Blood thinners or anticoagulant medications are used to treat coronary heart disease, congestive heart failure, heart attack and congenital heart disease, according to WebMD. Blood thinner medications help in preventing the development of clots in the blood.
Blood thinners are prescribed for patients with medical conditions such as atrial fibrillation and pulmonary embolisms, according to WebMD. It is also prescribed to patients who have undergone artificial heart valve surgery or orthopedic procedures. Lovenox and Fragmin are brand names of blood thinners that may be administered only through the subcutaneous fat or under the skin. Heparin is a brand name that may be administered intravenously or subcutaneously. Brand names of oral blood thinners include Eliquis, Xarelto and Pradaxa.