Quality of Vitamin D

by John Riler
(Bethesda, MD)

Having decided to take Vitamin D3, how does one get a good pharmaceutical grade? I've gotten to where I don't trust the manufacturing quality of any vitamin or supplement. The FDA makes a good point that taking a vitamin is one thing. Getting what's advertised is another.


(I ordered some Chinese herbs a few years ago that were supposed to be good for digestion. They came with tags that were warnings from the state of California that they had been determined to contain unacceptable levels of hard metals.)

Also, why is Vitamin D2 the only available prescription Vitamin D offered?

Why isn't Vitamin D3 offered in prescription strength?

Comments for Quality of Vitamin D

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Why, I know just the solution...
by: Kerri Knox, RN- The Immune Queen!

Hi John,

The reason that there is no such thing as prescription vitamin d3 is because d3 is a natural substance and d2 is a synthetic substance. A natural substance can't be patented and natural substances can't be labeled as 'drugs' and therefore can't be made into a prescription.

Why anyone would WANT it to be in a prescription is is beyond me anyway. PEOPLE should have control over what they put into their bodies and once things are put on prescription then the next step is to allow ONLY doctors to be able to have control over it. I want the government to have LESS control over what I put into my body, not more and a prescription ends up equaling government control over what I can and can't put into my body. Government control over my body is something that I want LESS of, not MORE of...

In any case, if you want a good quality vitamin d, then just go to my Vitamin D Supplement page and get some. I assure you that it's of excellent quality- that's why I offer it...



Kerri Knox RN Immune Health Queen

Kerri Knox, RN- The Immune System Queen
Functional Medicine Practitioner
Immune System
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Why vitamin D2?
by: Anonymous

So I'm still not understanding why D2 and not D3. Is it because ONLY D2 can be written as a MEGADOSE PRESCRIPTION BECAUSE it is synthetically created? And D3 because it is a natural substance cannot possibly be taken orally as the required necessary megadose?? (i.e., you couldn't possibly take the amount of D3 pills to get the equivalent of a 50,000 unit prescription of D?)

Nope
by: Kerri Knox, RN

Nope, both of those reasons are not correct, for two reasons.

A) There is no NEED to take a 50,000 IU once a week dose. It can simply be taken as somewhere between 5000 to 10,000 IU's a day. In fact, research shows it's better for disease prevention to take Vitamin D daily instead of weekly.

B) There is very much an Over the Counter 50,000 IU Vitamin D3 Pill.


Again, I don't know all of the reasons why doctors prescribe D2 instead of D3. It's most likely:

A) Ignorance that Vitamin D3 is superior and
B) Many insurance companies will pay for drugs, but not vitamins. And people want their insurance to pay for every medical treatment. They also may get better compliance from patients when they write a prescription because having to get a drug from a pharmacist 'seems' more authoritative than just telling someone to go to the drug store and buy a vitamin, and so patients, in general, are probably more likely to take the 'drug' than a vitamin.

These are just guesses. I do not know 'The Answer' to this question and have no way of finding out, short of interviewing doctors to find out.



Kerri Knox RN

Kerri Knox, RN- The Immune System Queen
Functional Medicine Practitioner
Immune System
Side Effects

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