NOW combines two nutrients extensively researched for their benefits for bones, teeth and the cardiovascular system.&ampnbsp; Vitamin D3 promotes calcium absorption and calcium transport to bones.&ampnbsp; Vitamin K2, likewise has been shown to be critical for bone and cardiovascular health through its role in the support of proper calcium metabolism in bone and vascular structures.&ampnbsp; Vitamin K2 is the most biologically active form of Vitamin K.*