Vitamin D is required to promote calcium absorption. It helps to maintain healthy bones and teeth. It also provides support to a healthy immune system as well as the pancreas, breast and colon tissue. As we age our bodies produce this vital nutrient less efficiently. The natural Vitamin D3 in this formulation is offered in a delicious, natural orange flavor liquid form for daily supplementation. Solgar's Liquid Vitamin D3 come as a gluten, wheat and dairy free liquid with a natural orange flavor.