Bontin is the trade name of the drug, whose generic name is White-browed Snake Venom Hemagglutinin for Injection, which is a hemostatic drug. The main ingredient of this drug is thrombin, which is obtained by extracting and isolating the freeze-dried venom of the white-browed pit viper (Pitviperus albopictus). White-browed Snake Venom Hemocoagulase can be used in a variety of medical conditions that require hemostasis or reduction of bleeding, such as bleeding in internal medicine, surgery, ophthalmology, obstetrics and gynecology, stomatology, and other clinical departments, as well as bleeding disorders; it can also be applied prior to surgery, to play a role in preventing bleeding. The incidence of adverse reactions to white-browed snake venom hemagglutinin is relatively low, with occasional allergic-like reactions. For this drug and similar drugs allergy, prohibited; in addition, although there are no reports of blood clots, safety, a history of thrombosis of the population, should also be prohibited from using this drug. Precautions: Bleeding from large veins and arteries must be treated by surgery; bleeding caused by blood diseases and disseminated intravascular coagulation is not an indication for this drug; attention should be paid to the patient’s bleeding and coagulation time during use. Injection of white-browed snake venom hemagglutinin is a prescription drug, need to be used under the guidance of a qualified physician, do not apply at random to avoid aggravation of the condition to increase the difficulty of treatment.