About Vitamin D (Supplement)
Vitamin D is a fat-soluble vitamin that was isolated in 1930 and named calciferol. Since then more metabolites have been found and the two major forms of this vitamin are now known to be vitamin D2 (ergocalciferol) and vitamin D3 (cholecalciferol).
Learn more about Vitamin D in our Vitamin D Community Report.
|50,000 intl units Weekly Aug 18, 2008 - May 15, 2011|
|Stopped Doctor's advice May 15, 2011|
May 15, 2011
EffectivenessCan't tell (for vitamin D deficiency)
BurdenA little hard to take