Hepfav 25000IU Injection contains Heparin 25000IU, an anticoagulant used to prevent and treat thromboembolic disorders. Heparin acts by potentiating the activity of antithrombin III, thereby inhibiting thrombin and factor Xa, which results in the prevention of fibrin clot formation. This injection is indicated for the prophylaxis and treatment of venous thrombosis, pulmonary embolism, and during extracorporeal circulation in procedures such as hemodialysis and cardiac surgery. Hepfav 25000IU is administered via intravenous or subcutaneous routes under strict medical supervision, with dosage individualized based on patient condition and coagulation parameters, such as activated partial thromboplastin time (aPTT). Caution is advised in patients with bleeding disorders, severe hypertension, or recent surgery due to increased risk of hemorrhage. Common adverse effects include bleeding, thrombocytopenia, and hypersensitivity reactions. Regular monitoring of platelet counts and coagulation profiles is essential during therapy to minimize complications. Hepfav should not be used in patients with active bleeding or known hypersensitivity to heparin. This product should be stored at controlled room temperature and protected from light. Proper administration and monitoring ensure effective anticoagulation while reducing the risk of adverse events.