Vitamin D is available in two main forms — D2 and D3. (Credit: magic pictures/Shutterstock ... a randomized placebo-controlled trial. Mayo Clinic: Cholecalciferol (Oral Route). Medline Plus: ...
vitamin D2 (ergocalciferol) and vitamin D3 (cholecalciferol). While both forms serve similar functions in the body, there are differences in their sources, metabolism, and effectiveness.
Vitamin D has two forms: D2 and D3. Vitamin D2 comes from plant-based sources. Vitamin D3 is found in some fish and produced ...