Post by AnimalAvenger on Apr 25, 2009 21:34:24 GMT -5
"What is the difference between vitamin D2 and D3? D-2 (ergocalciferol) is derived from yeast, while D-3 (cholecalciferol) is derived from lanolin (from sheep) or fish. D-2 and D-3 are both used to fortify milk and other dairy products. Some D-3 vitamin supplements are made with fish oil. "
www.vrg.org/nutshell/faqingredients.htm#d3
