Blood test proof that D2 worked better than D3 for me contrary to what you say

I was tested(25 HydrxyOH) in May and found to be deficient Level 26.6 put on Vit D2 for 6 weeks(50,000 X 6) and then retested 2 mos later and my level went up to 66. Following this I bought a good quality (Country Life) D3 supplement and took 2000 units daily for 3 mos and then just retested again(same blood test same lab) and my level went back down to 30.


Now they put me on the D2 again for 12 weeks. Since D3 did not work for me the first time how I can count on my level to stay consistently adequate.

I feel much better when my level is higher. So how come my body reacted differently to Vit D2 than your predictions and how can I be sure that D3 will keep me at the level of Vit D that I feel better at. (I do have some osteopenia and I am 65 years old)

Comments for Blood test proof that D2 worked better than D3 for me contrary to what you say

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It's the dose...
by: Kerri Knox, RN- The Immune Queen!

Well, according to your story, you took 50,000 IU's per week to bring up your Vitamin D Levels and it worked. But you were taking 7000 IU's per day of Vitamin D2.

Then you DECREASED your dosage to 2000 IU's when you took the Vitamin D3. 2000 IU's per day is not less than 1/3 of the dosage that you were taking of Vitamin D2, but it is a maintenance dose for a child of 4 years old and not an adult male!!

So, be sure to take a look at the Vitamin D Requirements page and take a look at what dosage an adult SHOULD be taking. It's much closer to 5000 IU's per day, and if you are a larger man, then you may need even more than that!



So, yes Vitamin D2 DOES bring up blood levels well in most cases. I do NOT argue with that. What I argue about are the ACTIONS that occur.

* It doesn't reduce parathyroid hormone as well

* It doesn't active the Vitamin D receptor GENES as well

* It has more chance of toxicity


So, raising blood levels is not the ONLY outcome that is important. Just like when you buy a car, if the ONLY endpoint that you are looking at is getting you to work every day, then any old beat up car will do. But most of us look for an endpoint that includes comfort, good sound system, etc. when we look for a car, right?

Well, if ALL that you want is a high blood level of Vitamin D, then D2 will certainly do that. But the idea behind taking Vitamin D is to reduce incidence of disease, reduce inflammation, create the natural antibiotic cathelicidin and much more.

So, if you are looking at THAT as an endpoint, you'll likely want to simply take a higher maintenance dose of Vitamin D3 Supplements.



Kerri Knox RN Immune Health Queen

Kerri Knox, RN- The Immune System Queen
Functional Medicine Practitioner
Easy Immune Health.com

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