Heparin 25,000 IU injection is a widely used anticoagulant medication designed to prevent and treat blood clots. It works by inhibiting clotting factors in the blood, reducing the risk of deep vein thrombosis (DVT), pulmonary embolism, and other thromboembolic disorders. This injection is also commonly used during dialysis, heart surgeries, and in patients with unstable angina or myocardial infarction to maintain proper blood flow. Heparin is administered under medical supervision, typically via subcutaneous or intravenous routes. Its efficacy ensures smooth blood circulation, making it a critical choice for patients prone to clotting complications. Regular monitoring is essential to avoid side effects.