Sisu Calcium & Magnesium 1:1 - Essential to those who have a limited intake of Calcium rich foods, or to those who are lactose intolerant, and is easy to assimilate for those who have reduced stomach acid. Sisu Calcium Magnesium with Vitamin D is formulated with Calcium Citrate, which is a highly soluble form of Calcium. Combined with Magnesium and Vitamin D, this superior formulation provides higher bio-availability and absorption for maximum benefits. Essential for protection against osteoporosis and maintenance of healthy teeth and gums, and also beneficial in strengthening the cardiovascular system and in lowering blood pressure, as well as reducing cholesterol.