Zabita (rivaroxaban) is an anticoagulant compound that prevents the formation of blood clots. Zabita is used to prevent as well as treat deep vein thrombosis (DVT). Deep vein thrombosis can lead to pulmonary embolism, which can be life-threatening. It is also used in people with atrial fibrillation. Atrial fibrillation is a type of heart rhythm disorder that can lead to stroke. This drug reduces the risk of stroke in these people.