Essence Nutrition D3 2000 IU is a dietary supplement in the form of tablets containing vitamin D in the form of cholecalciferol. Vitamin D and its metabolites belong to the group of fat-soluble vitamins . In the human body, cholecalciferol undergoes the process of two enzymatic hydroxylation to calcitriol, i.e. a biologically active form. As a result of these changes, the main metabolite of vitamin D3 is formed, i.e. 25-hydroxyvitamin D3 - 25 (OH) D3. The level of 25 (OH) D3 increases in proportion to the amount of vitamin D taken with diet or supplements, hence it is considered a marker of vitamin D3 content in the body . Vitamin D helps in the proper absorption / utilization of calcium and phosphorus , as well as in the proper functioning of the muscles and the immune system . It also helps maintain normal blood calcium levels and helps maintain healthy bones and teeth . Vitamin D is involved in the process of cell division.Essence Nuritrion D3 2000 IU - supplement your daily diet with a portion of vitamin D. Remember that this vitamin helps in the proper functioning of the immune system, and one pack contains up to 180 servings!