Is vitamin d3 vegan?

Vitamin D3, also known as cholecalciferol, is a fat-soluble nutrient used to fortify foods and formulate supplements. It is commercially produced by irradiating sterols with ultraviolet light. The primary traditional source is 7-dehydrocholesterol extracted from lanolin, a waxy substance obtained from sheep wool. However, it can also be extracted from non-animal organisms, specifically certain types of lichen and algae. Vitamin D3 commonly appears in fortified foods such as breakfast cereals, plant-based dairy alternatives, fruit juices, margarine, and multivitamins.

vitamin D3 is possibly vegan because manufacturers can derive it from either animal or plant sources, and packaging rarely specifies the origin. Lanolin is an animal-derived raw material, while lichen and algae are plant-based raw materials. Because both processes yield the identical compound, consumers cannot determine the source from the ingredient panel alone. Only a vegan certification on the label or confirmation from the product manufacturer can verify that the vitamin D3 is plant-sourced.