Nature's Bounty Calcium 600 with Vitamin D3 : Calcium is the primary mineral responsible for strong bones and teeth. The body also uses Calcium for proper muscle contraction, nerve function and heart function. Vitamin D3 assists in maintaining a healthy immune system. Just two tablets of Calcium 600 with Vitamin D3 give you the supports of 120% of the Daily Value for Calcium. Key Features of Nature's Bounty Calcium 600 D3 : It helps build strong bones ; It Involves in proper muscle contraction impulse ; It helps support neuromuscular health ; It helps maintain a healthy immune system. Suggested Use : For adults, take one (1) tablet up to twice daily, preferably with meals.Warning : If you are pregnant, nursing, taking any medications or have a medical condition, consult your doctor before use. Discontinue use and consult your doctor if any adverse reactions occur. Keep out of reach of children. Store at room temperature. Do not use if seal under cap is broken or missing.