'Heparin (Na) and Heparin (Cl) is anticoagulant agent. Heparin (Na) and Heparin (Cl) is a highly negatively charged heterogeneous mixture of sulfated mucopolysaccharide, varying in the molecular weights and composed of polymer of alternating derivatives of D-glucosamine and L-iduronic acid or D-glucuronic acid, having the property of prolonging the clotting time of blood. Heparin is the body''s natural anticoagulant. Heparin (Na) and Heparin (Cl) is usually obtained from the lungs, intestinal mucosa or other suitable tissue of domestic mammals used for food by man. Heparin is employed clinically in conditions in which a rapid reduction in the coagulation ability of blood is desired. Heparin calcium and heparin sodium are the calcium and sodium salts of active principles that compose heparin. Heparin calcium and sodium are administered intravenously or subcutaneously.'