Support strong bone and cardiovascular health with NOW Foods - Vitamin D-3 & K-2, a highly absorbable blend that contains both Vitamin D-3 and K-2. Working in conjunction with one another, vitamin D3 helps promote consistent calcium transport and absorption while K-2 helps proper formation of the a strong bone matrix. In addition, Vitamin D-3 has recently been shown to have correlations with insulin action and glucose metabolism, affecting the immune system. Vitamin K-2 strengthens arterial function and the cardiovascular use of calcium.