Vitamin D3 5,000 IU Fast Dissolve Tablets

For most people, the best way to get enough vitamin D is by taking a supplement because it is hard to get enough through food. Although some foods are fortified with vitamin D, few foods contain it naturally. Vitamin D supplements are available in two forms: vitamin D2 (“ergocalciferol” or pre-vitamin D) and vitamin D3 (“cholecalciferol”). Both are also naturally occurring forms that are produced in the presence of the sun’s ultraviolet-B (UVB) rays, but Vitamin D2 is produced in plants and fungi and Vitamin D3 in animals, including humans. Many people have insufficient levels of Vitamin D3 because they have limited sun exposure. Also, people with darker skin tend to have lower blood levels of vitamin D3 because the pigment melanin) acts like a shade, reducing production of vitamin D3.