* 1000 mg Per Serving * With Vitamin D3 * Promotes Bone and Immune Health * Dietary Supplement Smart Facts Calcium helps the heart and cardiovascular system by maintaining a regular heart beat and assisting with the transmission of nerve impulses. It helps build and maintain good bone health and is essential for healthy teeth, blood and muscles. Vitamin D3 helps the body absorb Calcium and is more potent and active form compared to Vitamin D2. Vitamin D3 also supports a healthy immune system.