Sentinel Oyster Shell Calcium 500mg with Vitamin D is a dietary supplement containing naturally-sourced calcium from oyster shells combined with Vitamin D for optimal absorption. Each bottle contains 100 tablets designed to support bone health and maintain strong teeth. The calcium in this supplement comes from natural oyster shells, which provides calcium carbonate that is well-absorbed by the body. The addition of Vitamin D helps improve calcium absorption and utilization. This supplement may be particularly beneficial for adults over 50, post-menopausal women, those with limited dairy intake, or individuals at risk for osteoporosis. The tablets come in a dark amber bottle with a safety seal to maintain product freshness and integrity.