Calcium is an important mineral which helps maintain strong bones and teeth. Three Quest Calcium with Vitamin D tablets provide 1,000mg Calcium with 15µg Vitamin D to promote its absorption from the gut. The Calcium is present as the soluble, Amino Acid Chelated form which is very well absorbed. Suitable for Vegetarians For post-menopausal women, nutritionists recommend a total daily Calcium intake (from food and supplements) of 1,500mg.