Vitamin D2 vs Vitamin D3 - Difference and Comparison | Diffen
“Vitamin D” (calciferol) is considered to be a beneficial and necessary nutrient, but there is no single vitamin called "vitamin D". What we know as vitamin D is essentially a collective term for two types of calciferol: vitamin D2 (ergocalciferol) and vitamin D3 (cholecalciferol). Vitamin D3 is made in the skin of all vertebrates when exposed to sun, while D2 is produced by invertebrates ...
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