Although Vitamin K is best known for its role in normal blood clotting function, recent research has revealed Vitamin K's beneficial effects on bone and cardiovascular health. In bone tissue, Vitamin K is critical for the formation of healthy, strong bone matrix. In fact, bone quality is dependent on the presence of adequate Vitamin K. Vitamin K's role in arterial health revolves around its ability to support proper calcium metabolism in vascular structures. Vitamin K2 is the most biologically active form of vitamin K. It is also the most beneficial for bone integrity, as well as for the support of arterial health. This product also includes the addition of Alfalfa which is typically known to be a rich source of natural Vitamin K.