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!.