Puritan'S Pride Vitamin D3 5000 IU X100 Softgels

Vitamin D3 is a more potent and bioavailable form compared to D2. Assists the body with calcium absorption. Vitamin D plays a regulatory role in the growth, differentiation, and proliferation of different types of white blood cells.8** It is important to regulate these processes to maintain immune balance. The T and B cells of the adaptive immune system are both regulated by vitamin D.** Many cells of the innate immune response also require vitamin D such as monocytes which need it to mature properly.** Adequate concentrations of vitamin D are also necessary for the synthesis of important proteins with immune-fighting properties. As we age, the skin produces vitamin D less efficiently.Puritan's Pride vitamins, minerals and supplements are scientifically formulated using the highest quality ingredients from around the world. We manufacture our supplements right here in the U.S.A., rigorously testing and inspecting them up to 15 times to ensure purity, potency, and consistency in every bottle.