Background: Currently, there is a lack of clarity in the literature as to whether there is a definitive difference between the effects of
vitamins D2 and D3 in the raising of serum 25-hydroxyvitamin D [25(OH)D].
Objective: The objective of this article was to report a systematic review and meta-analysis of randomized controlled trials (RCTs)
that have directly compared the effects of vitamin D2 and vitamin D3 on serum 25(OH)D concentrations in humans.
Design: The ISI Web of Knowledge...
Authors: Laura Tripkovic, Helen Lambert, Kathryn Hart, Colin P Smith, Giselda Bucca, Simon Penson, Gemma Chope, Elina Hypponen, Jacqueline Berry, Reinhold Vieth, Susan Lanham-New