Vitamin K
Vitamin K helps the blood to clotting. This is usually vitamin K1 (phylloquinone). There are several vitamins K. Vitamin K2 (menaquinone) is essential for the production of a special tissue protein that, by binding with calcium, helps keep supple and clean the artery wall, joint cartilage and other soft tissues in the body. In addition, vitamin K2 is indispensable to the bone proteins which play an important role in the formation and maintenance of healthy and good bone tissue. K2 ensures that calcium from your food is absorbed and used to strengthen bones instead of calcifying veins.
Muylle F. , Gnostotheca 6414