Used primarily as an anticoagulant medication to prevent and treat blood clots. It is commonly prescribed for conditions such as deep vein thrombosis, pulmonary embolism, and atrial fibrillation. Additionally, it is used to reduce the risk of stroke in patients with certain heart conditions. It works by inhibiting the synthesis of vitamin K-dependent clotting factors in the liver. It is also used in pest control to manage rodent populations by inducing fatal bleeding. Careful monitoring of dosage is required to avoid excessive bleeding or other complications.