Vitamin D-3 2000 IU (144823), 180 tablets, GNC Vitamin D3 (cholecalciferol) is part of the group of fat-soluble vitamins, also called the anti-rickets vitamin, it is essential in the reabsorption of calcium and phosphorus in the intestine, at the same time catalyzing the transformation of organic phosphorus into inorganic and mobilizing it in the tissues. Unlike the other vitamins, vitamin D can be produced by the body. The synthesis process of vitamin D existing in the epidermis is triggered by ultraviolet rays, being immediately absorbed by the blood vessels. So the first source of vitamin D is natural light. In the case of poor exposure to the sun, we must provide resources to the body from food or nutritional supplements. Properties: - regulates the metabolism and absorption of calcium, which is necessary for strong teeth and bones; - maintains a normal ratio between calcium and phosphorus; - modulates neuromuscular functions, combats the occurrence of nervous disorders, as well as general weakness; - supports the immune system. Active ingredients per tablet: Vitamin D (Cholecalciferol D-3) 2000 IU. Mode of administration: 1 tablet per day. Presentation: 180 tablets