More on Vitamin D3 Sources
"At one time, Vitamin D-2 was added to milk. Vitamin D-2 is manufactured by exposing bacteria and algae to ultra-violet light. D-2 imparted a bitter taste to dairy products, and so was replaced by vitamin D-3."
"Basically D-3 always is derived from an animal. The sunlight reaction that converts 7-dehydrocholesterol to vitamin D-3 is a 'pure' chemical reaction that occurs in your skin in certain cells."
Sources of D3:
Pig skin, sheep skin, raw fish liver, and pig brains.
- Vitamin D1 (a molecular compound of lumisterol and vitamin D2)
- Vitamin D2 (calciferol, ergocalciferol)
- Vitamin D3 (cholecalciferol, activated 7-dehydrocholesterol)
- Vitamin D4 (22:23-dihydroergocalciferol)
- Calcitriol (1,25-dihydrocholecalciferol)
To read more on Vitamin D - visit our You Should Know - Vitamin D - Not All You Think It Is.