Feature Calcium: Important mineral for healthy, strong bones & teeth, nerve & muscle function support. Magnesium: May help support calcium absorption & healthy heart, muscle, nerve & circulatory function. Zinc: Involved in 100+ enzymatic processes, zinc is intended to help support healthy immune function. Vitamin D3 is one of the 13 essential vitamins needed for health and well-being. It helps the body absorb calcium and other nutrients. How to use:Take 1-2 softgels daily with water or a meal. Store in a cool, dry place.