Heparin Sodium Injection 10,000 USP Multiple-Dose Vials 10 mL x 25/Pack (RX)Heparin Sodium Injection 10,000 Heparin sodium injection is a prescription anticoagulant (blood thinner) given by subcutaneous (SC) or intravenous (IV) injection. Its purpose is to prevent and treat blood clots. Heparin is a natural mucopolysaccharide (from porcine intestinal tissue) that inactivates clotting factors and stops clot formation. Typical indications include: preventing or treating deep vein thrombosis (DVT) and pulmonary embolism (PE);