ca + mg + vit d3 in this formula are delivered in their chelated form for maximum absorption.Coated tablets provide a combination of Calcium, Vitamin D, and Magnesium to support the requirement for adults, pregnant women, and senior citizens.It provides protection and rigidity for the bones and teeth, maintaining muscle elasticity and reducing the possibility of weakness or spasm. Minerals in this formula are delivered in their chelated form (maximum absorption with no constipation or side effects)