Chemical composition of vitamin D3

Also known as the “sunshine vitamin,” vitamin D is an essential nutrient that can be obtained through sun exposure, food, and supplements. This vitamin plays a key role in many aspects of health, such as bone health, immune function, and more. Vitamin D comes in two different forms: ergocalciferol (vitamin D2) and cholecalciferol (vitamin D3). Each of them differs slightly in their chemical structure. Vitamin D3 is obtained from animal sources, while vitamin D2 is primarily derived from fungal sources.