Sentinel Vitamin D3 400 IU is a dietary supplement containing 100 softgel capsules designed to support optimal vitamin D levels. Each softgel provides 400 IU of vitamin D3 (cholecalciferol), which helps maintain healthy bones and teeth by promoting calcium absorption. The softgel format ensures easy swallowing and optimal absorption, as vitamin D3 is fat-soluble. This supplement is particularly beneficial for individuals who have limited sun exposure or follow certain dietary restrictions. The convenient bottle contains a 100-day supply when taken as directed at one softgel daily. The product features a safety-sealed bottle with clear labeling of dosage and contents.