Vitamin K is principally known because it involved in blood coagulation. Furthermore, epidemiological studies showed that its deficit was associated with increased fragility fractures, vascular calcification and mortality. There are two main types of vitamin vitamers: Phylloquinone (or PK) Menaquinones (MKn). acts both as coenzyme y-glutamyl carboxylase (GGCX) transforming undercarboxylated car...