Vitamin nutritional supplement. Vitamin K is essential for the synthesis of proenzymes (factor B) in the liver and is involved in the synthesis of coagulation factors VII, IX and X, maintaining the physiological process of blood clotting in animals. Lack of vitamin K can cause the above clotting factor synthesis disorders, affect the clotting process and cause bleeding. Vitamin K is also necessary for the vitamin K-dependent carboxylation system in the animal body (mainly in the liver, bones, testicles, skin and kidneys and other tissues and organs), and is an indispensable factor in the synthesis of skeletal hormone (BGP). In addition, it plays an important role in the metabolism of high-energy compounds and oxidative phosphorylation, as well as in the metabolism of other fat-soluble vitamins, and has the function of diuresis, enhancing liver detoxification, participating in membrane structure, and lowering blood pressure