The medicine Defibrase is the trade name given to batroxobin and is isolated from the venom of Bothrops moojeni. It functions as an defibrinogenating agent and is used for patients with thrombosis.
The batroxobin from the snake Bothrops atrox is patented as Reptilase and used as a hemostatic drug.http://www.creative-enzymes.com/product/Native-Bothrops-Atrox-Snake-Defibrase_772.html