The product is a sterile, lyophilized concentrate composed of a number of Vitamin K-dependent clotting factors found in functioning human plasma. Also known as prothrombin complex concentrate, products containing this complex often include Factor IX (antihemophilic factor B), Factor II (prothrombin), Factor X (Stuart-Prower Factor), and low levels of Factor VII (proconvertin) derived from human plasma. Many commercially available products also contain low levels of other antithrombotic proteins. For example, Kcentra (FDA) also contains the antithrombotic proteins C and S, while Bebulin VH (FDA) contains heparin. Coagulation factors are purified from pooled human plasma and subsequently sterilized and treated. Prothrombin complex concentrate https://www.creativebiomart.net/therapeutic-proteins/p/68/prothrombin-complex-concentrate/