Vitamin D3 Calciferol
Vitamin D is also called the “sunshine vitamin” because it is produced by the skin in response to sunlight. It is a fat-soluble vitamin in a family of compounds that includes vitamins D-1, D-2 and D-3. Your body produces vitamin D naturally when exposed to direct sunlight. Since the body is dependent on sunshine for vitamin D production (main supply of 75-90%) and can hardly absorb it through food, a deficiency can occur more quickly, especially in Central European winters. UV protection can also affect the absorption of vitamin D, so care should be taken to ensure sufficient levels of the vitamin in the blood. Vitamin D is converted by the body into a hormone that controls a variety of bodily functions.