Vitabiotics Ultra Vitamin D 2000 IU extra-strength tablets support normal immune system function. Ultra Vitamin D provides D3, the preferred form of vitamin D. It is recommended to safeguarding the diet with vitamin D to help maintain optimum levels throughout the year, especially in the winter months. It is particularly important for those who have restricted or limited exposure to the sun. Ultra Vitamin D provides 2000 IU vitamin D3. Vitamin D plays a truly remarkable role in the body for health and wellness. Vitamin D contributes to the normal function of the immune system and the normal absorption and utilisation of calcium in the body. And in the maintenance of normal bones and teeth and maintenance of normal muscle function. Vitamin D also has an important role in the process of cell division. It contains Vitamin D3 (cholecalciferol), the preferred form of vitamin D produced naturally by the body on exposure to sunlight. The pack includes 96 tablets.