Question: what is the difference between vitamin d and d2 and d3?
Answer: Vitamin D3 Comes from Animals, Vitamin D2 from Plants The two forms of vitamin D differ depending on their food sources. Vitamin D3 is only found in animal-sourced foods, whereas D2 mainly comes from plant sources and fortified foods. Since vitamin D2 is cheaper to produce, it's the most common form in fortified foods.