The price of heparin is related to the manufacturer, specifications and different regions, hospitals and other factors. Take low molecular weight heparin sodium injection 5000IU as an example, the selling price of each one is ranging from 13-25 dollars. 1. Ordinary heparin sodium is a mixture of glucosamine, L-aidu glucuronide, N-acetylglucosamine and D-glucuronic acid, which belongs to mucopolysaccharides, and exerts anticoagulant effect by activating antithrombin III (AT-III). 2. Ordinary sodium heparin has effect on all three stages of the coagulation process, and has anticoagulant effect both in vivo and in vitro, which can prolong the clotting time, prothrombinogen time and prothrombin time. Oral non-absorption, subcutaneous, intramuscular are well absorbed, the anticoagulant effect is better after intravenous injection. 3. Heparin is the drug of choice for clinical need to achieve rapid anticoagulation effect, and can be used to prevent thrombosis and anticoagulation therapy, such as for cardiac, surgical and renal dialysis to maintain the smooth circulation of blood outside the body and the treatment of diffuse intravascular coagulation (DIC) caused by various reasons. 4. Heparin is easy to cause bleeding and has no specific drug, so low molecular heparin, enoxaparin and so on are often used when rapid anticoagulation is not needed. Heparin is a prescription drug and should be used under the guidance of a specialist, including self-selection, to avoid adverse reactions.