Sentinel Calcium Oyster Shell is a dietary supplement providing 500mg of naturally-sourced calcium from oyster shells per tablet. This supplement comes in a bottle of 100 tablets and is designed to support bone health, dental health, and proper muscle function. The calcium in this supplement is derived from natural oyster shells, which provides calcium carbonate - a highly bioavailable form of calcium. When taken as directed, this supplement can help maintain adequate calcium levels in the body, particularly beneficial for those who may have limited dietary calcium intake, including older adults, post-menopausal women, and those following restricted diets. The bottle features a safety seal to maintain product freshness and integrity.