Used as an anticoagulant to prevent blood clots, particularly in patients with non-valvular atrial fibrillation to reduce the risk of stroke. It is also prescribed after hip or knee replacement surgery to prevent deep vein thrombosis and pulmonary embolism. Works by directly inhibiting thrombin, an enzyme essential for blood clot formation. Offers predictable response with fixed dosing, eliminating the need for routine coagulation monitoring. Suitable for long-term use in eligible patients due to its oral administration and favorable safety profile compared to older anticoagulants.