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.
|50000 intl units Weekly Mar 05, 2009 - Last Update|
Mar 5, 2009
EffectivenessCan’t tell (for Other)
BurdenNot at all hard to take