The term vitamin D describes as an umbrella term a group of fat-soluble vitamins: the calciferols. Vitamin D3 (cholecalciferol) is one of the most important forms of the so-called sun vitamin and is considered to be the most effective form of the vitamin in the body.
Due to its positive effect on the absorption of phosphate and calcium, vitamin D contributes in particular to the preservation of bones. In addition, it contributes to the normal functioning of the immune system, muscle function and the maintenance of healthy teeth.
In order to avoid overdosing, a dosage of 20 µg/day is recommended when taken regularly - exactly the amount contained in Sun.