Supports Bone Health Biologically Active Form Menaquinone-4 (MK-4) Supports Proper Calcium Metabolism Non-GMO A Dietary Supplement Vegetarian/Vegan Kosher Vitamins Family Owned Since 1968 Quality GMP AssuredAlthough Vitamin K is historically known for its role in normal blood clotting function, we now know that Vitamin K is also essential to bone, cardiovascular, and nervous system health. As a biologically active form of Vitamin K, K-2 is important for the formation of healthy, strong bone matrix. Vitamin K's role in arterial health revolves around its ability to support proper calcium metabolism in vascular structures.