Calcium is the primary mineral responsible for strong bones and supports colon health.* The body also uses calcium for proper muscle contraction and nerve function.* Vitamin D assists in maintaining a healthy immune system.* Just two tablets of Calcium 600 with Vitamin D give you the support of 120% of the Daily Value for calcium. We include Vitamin D to aid the absorption of this essential mineral.* No artificial flavor or sweetener, no preservatives, no sugar, no milk, no lactose, no soy, no gluten, no wheat, no yeast, no fish. Sodium free.