The most common treatment for a PE is anticoagulant (blood thinning) medication. This medication serves the dual purpose of keeping the clot from enlarging and new clots from forming. The common blood thinning medications prescribed for PEs include Coumadin and Heparin. If the patient is unable to take blood thinners, a filter can be inserted into the patient’s Inferior Vena Cava, a vein in the body that carries blood from the lower body to the heart. While the filter will not stop blood clots from forming, it will block the clot before it gets to the patient’s lung. Since most PEs come from clots that form in the deep veins of the leg, patients with DVTs are often prescribed compression stockings. These stockings act to compress the veins in the calf and prevent blood from becoming static and pooling, which can cause clots to form.