Vitamin D

Vitamin D is a group of fat-soluble compounds that include vitamin D1, vitamin D2 and vitamin D3. These vitamins play important roles in the absorption of minerals such as calcium, magnesium, and phosphate, which is important for the development of bone and teeth, along with various other biological functions, including roles in immunity. Your body produces vitamin D naturally from direct exposure to sunlight, but you can also meet your vitamin D requirements from certain foods and supplements. Vitamin D supplements are available in two forms, namely vitamin D2 (ergocalciferol or pre-vitamin D) and vitamin D3 (cholecalciferol).