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.
|1000 intl units Daily Sep 25, 2009 - Jun 03, 2010|
|Stopped Other Jun 3, 2010|
|Stopped Personal research Jan 2012|
Jan 15, 2012
EffectivenessModerate (for Vitamin D deficiency)
BurdenNot at all hard to take