I have found differences in the units, but what I really mean is the differences in the chemistry & the indications. I know vit D helps preserve the Calcium in bones, but what other indications are for the diff types of vit D?
German researcher Adolf Windaus first discovered 3 forms of vitamin D, which he called D1, D2, and D3. It was later learned that the vitamin D1 was a mixture of compounds rather than a pure vitamin D product, so the term D1 is no longer used.
The term "Vitamin D" now refers to several different forms.
The two forms important in humans are : ergocalciferol (vitamin D2) and cholecalciferol (vitamin D3). Vitamin D2 is a synthetic form (man made) and Vitamin D3 is the internal form that we make.
See: http://www.nlm.nih.gov/medlineplus/druginfo/natural/patient-vitamind.html - see notes under dosing for uses of different forms of vitamin D.
Search for questions
Still looking for answers? Try searching for what you seek or ask your own question.
Posted 7 May 2011 • 1 answer
Posted 3 Apr 2015 • 3 answers
Posted 8 Apr 2016 • 0 answers
Vitamin D Deficiency - I had low levels of the vitamin D, 25 hydroxy, 9ng/mL in D3 and D, D2 was at?
Posted 10 Jun 2016 • 0 answers
Vitamin D Insufficiency - I've been prescribed pro d3 20000u two caps weekly as directed by my gp is
Posted 15 Aug 2016 • 0 answers