High content of vitamin D3 (cholecalciferol): Vitamin D contributes to the normal absorption and use of calcium and phosphorus, to the maintenance of normal levels of calcium in the blood, to the maintenance of normal bones and teeth, to the normal functioning of muscles and the immune system and the process of cell division. How to use: Take 1 pearl a day, preferably with meals, with a little water, or as directed by a specialist.