Source Naturals, Vitamin D-3, 2,000 IU, 400 Caps

Product Description Sunlight is a source of life on earth, but we may not be aware of all the ways it benefits us. Bodies manufacture vitamin D3 when the skin is exposed to UV radiation from sunlight, but the ability to do so decreases as we age. Vitamin D3 maintains healthy calcium and phosphorus levels in the body for strong bones, it helps maintain muscle strength in older adults, and it also plays an role in a healthy immune response. Vitamin D3 is the optimal form of vitamin D. It is the form of vitamin D that the body manufactures in sunlight, and the form most efficient for the bodys ne