Scientific Name: Heparin
Brand Name: Heparin Leo
Company Owner: Not Available
Mechanism Of Action Under normal circumstances, antithrombin III (ATIII) inactivates thrombin (factor IIa) and factor Xa. This process occurs at a slow rate. Administered heparin binds reversibly to ATIII and leads to almost instantaneous inactivation of factors IIa and Xa The heparin-ATIII complex can also inactivate factors IX, XI, XII and plasmin. The mechanism of action of heparin is ATIII-dependent. It acts mainly by accelerating the rate of the neutralization of certain activated coagulation factors by antithrombin, but other mechanisms may also be involved. The antithrombotic effect of heparin is well correlated to the inhibition of factor Xa. Heparin is not a thrombolytic or fibrinolytic. It prevents progression of existing clots by inhibiting further clotting. The lysis of existing clots relies on endogenous thrombolytics.
Description of the Drug: Heparin is an anticoagulant indicated for thromboprophylaxis and to treat thrombosis associated with a variety of conditions such as pulmonary embolism and atrial fibrillation.
Protein Data Bank: Not Available
Source: DrugBank Online – Retrieved 2023-01-23 from