D2 As Ergocalciferol

Ergocalciferol, also known as vitamin D2, is a form of vitamin D. It is typically produced by exposing the ergosterol found in yeast or fungi to ultraviolet (UV) light. This process converts ergosterol into vitamin D2.

Ergocalciferol is added to foods as a source of vitamin D, a nutrient essential for bone health and immune function. It is commonly found in fortified foods such as meal replacements, nutritionally complete foods, and some protein powders, where it contributes to the overall nutritional profile.

Ergocalciferol is authorised in the UK as a nutrient for food fortification. EFSA has evaluated vitamin D, including ergocalciferol, and established a scientific opinion on its health benefits. While generally considered safe when consumed at typical levels, very high intakes of vitamin D can lead to adverse health effects. The NHS advises that most people in the UK can get enough vitamin D from sunlight exposure during spring and summer, and from diet during autumn and winter.