21st Century Calcium Plus Multimineral + Vitamin D Tablets For Bones & Teeth Delivers 12 mg Calcium, 4 IU vitamin D, 8 mg Magnesium, 15 mg Zinc, 2 mg copper, and 3.6 mg manganese in one convenient form for optimal nutritional support and helps improve bone density and prevent bone loss while supporting healthy bones, teeth, muscles, and the immune system and promoting overall health and wellness, as Calcium is the primary mineral responsible for strong bones and teeth and helps maintain healthy bones and teeth, enables muscle movement, and regulates the transfer of messages by nerves from the brain to different parts of the body, Vitamin D helps the body absorb calcium, enables muscles to move, and supports healthy bones by stimulating bone-building cells, Magnesium supports bone and muscle health by playing a role in muscle contraction and relaxation, influencing bone formation, acting as a cofactor in activating vitamin D, and this formula contains a unique blend of ingredients that help increase nutrient absorption so the body gets the most out of every dose.