The 2000IU of D3 may raise you 20 pts. That will still put you low.
The D2, is not active in humans. D2 is made from plants.
Doctors don't know better, because their reference books are written by old doctors, who only know the RX form...which is over 40 yrs old.
If you use 5000 IU D3 daily instead of D2 at all you may raise close to 50 points. That D2 will not do much for you. Just because it is a "big sounding dose" doesn't mean it will work for you. I have a link to a study at the end of that thread.
Some people don't raise quickly... this has to due with other cofactors not being present like magnesium, or due to being overweight carrying alot of "fat"...where the D goes.
Quote:
Vitamin D's Co-factors
Vitamin D has co-factors that the body needs in order to utilize vitamin D properly. They are:
magnesium
zinc
vitamin K2
boron
a tiny amount of vitamin A
Magnesium is the most important of these co-factors. In fact, it is common for rising vitamin D levels to exacerbate an underlying magnesium deficiency. If one is having problems supplementing with vitamin D, a magnesium deficiency could be the reason why.
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from
http://www.vitamindcouncil.org/
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Weezie looking at petunias 8.25.2017
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