Vitamin K is a fat soluble vitamin which is usually called the coagulation vitamin or antihaemorrhagic factor because of its role.
In addition, by origin, vitamin K isolated from green plants is called K1 or phylloquinone, is synthesized in the intestinal bacteria of the human body is called K2 or menaquinone and one that is made in synthetic form called menadione or K3.
As the alternative name implies, vitamin K has the primary function involved in the synthesis of clotting factors, therefore, is essential in the formation of clotting proteins such as prothrombin.
Vitamin K is a fat soluble vitamin. The fitoquinona, natural form of vitamin K found in alfalfa and other foods, was discovered in Denmark and designated as vitamin K for the Danish word koagulation.
Phylloquinone providing food is designated as K1, while menaquinone produced by our intestinal bacteria called vitamin K2. A synthetic compound with the basic structure of the quinones is menadione or vitamin K3.
Vitamin K is important for proper blood clotting in humans. It is essential for synthesis in the liver of four coagulation proteins.