Vitamin D is formed under the action of ultraviolet radiation in the tissues of animals and plants from sterols. Today vitamin D called two vitamins - D2 and D3 - ergocalciferol and cholecalciferol - is crystal without color and odor stable in high temperatures. These vitamins dissolve in fats and organic compounds, and insoluble in water. The main function of vitamin D - to ensure normal growth and development of bones, the prevention of rickets and osteoporosis. It regulates mineral metabolism and promotes the deposition of calcium in bone and dentin thus preventing osteomalacia of bones.Сomprar medicamentos
