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I'm taking D3 daily and I'm confused about the DV % that are indicated on the bottles. Why are they so huge? The 2010 recommended daily allowance (RDA) is 600 IU for those 1-70 years of age. So why so many brands offer 5000 – 10000 UI (1250-2500% Daily Value) per pill? The instruction on the bottle suggests I take one pill daily. I'm positively confused. Could you please clear up this issue for me?

Asked by  crowd on May 25, 2017

  •  crowd on

    See title

    Answered by  crowd on
  •  IAW on

    The basic problem (short answer) is the RDA is set by the government. Right now the government is “choosing to ignore” the Vitamin D studies and research that absolutely show the following. To keep the human body “healthy”, we all need to take more than the present RDA or get the correct amount of sunshine. The present RDA was based on how much we needed for bone health BUT even this amount is no longer holding true. Research and studies show that Vitamin D is not just for bone health. We now know that it is needed for a healthy immune system and that it helps to repair “genes” and these are just a few things. We know that if a human does not maintain a Vitamin D level of at least 40ng/ml, their chances for cancers and autoimmune disease rises “dramatically”.
    So the “actual” experts on Vitamin D promote anywhere from 4000-10,000iu a day. We here at the VDC promote no less than 5000iu a day. That is what it usually takes for an average weight person of 150lbs to maintain a blood level of 50ng/ml. It could really take more or a little less and that is why we also promote checking your blood level. If you already have a disease, you may need even more.
    If you have any more questions, just ask!

    Answered by  IAW on
  •  crowd on

    IAW, thank you very much for your answer, you made it pretty clear.

    I also supplement B12 on a regular basis, and it’s quite the same with the daily values here – at least 1000 mcg = 16666% DV per pill or more.
    Do you think the reason with “overdosing” here could be the same?
    I do realize it’s not exactly your profile, but I asked this question about D3 doses on some other forums, yet you were the only one to answer. So if you happen to have any info about B12, it will be highly appreciated.
    Thank you very much for your work!

    Answered by  crowd on
  •  IAW on

    I have never researched B12 in depth but know the following. In many other countries the acceptable “low end” for a blood level for B12 is higher than the USA. (If the USA is where you live.) Meaning the low end starts at 450-500 in other countries. So they must have had some information that indicated higher is better.
    I also know that many people that come to the Q and A and said they were diagnosed with a Vitamin D3 deficiency were also diagnosed with a B12 deficiency. Right now I don’t believe there is a study that connects the two. (Lack of Vitamin D can cause anemia and also a lack of B12.)
    The next thing “I wonder about” (and I am not a doctor or scientist) if research and studies were done with “so called” healthy people and we now know that just about everyone is D deficient, then could any of that then change the conclusions or “amounts” we have reached in the past for “other things”.

    Answered by  IAW on

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