XtraCal is a healthy Calcium supplement formulated with Vitamin D and Magnesium to support strong bones and teeth. The Vitamin D and Magnesium present in Xtra-Cal aids the absorption and digestion of calcium and to support healthy aging. Key Benefits Helps build strong bones and maintain bone density and healthy teeth.* Usage Take one tablet two times a day with meals as a dietary supplement. Why you need it? Provides optimum absorption of calcium and supports bone health.* In tablet form Overview For bone health and for maintaining bone mass (level of calcium and other minerals in bone), Vitamin D, Magnesium and Calcium go hand in hand, because the Vitamin D and Magnesium must be present for calcium to be absorbed from the digestive tract. Helps maintain bone health.