Nutrition & Vitamins : Where Does Vitamin D3 Come From?

Vitamin D3, or niacin, usually comes from meats and fish, and it should not necessarily be taken in isolation outside of multivitamins. Find out how excessive niacin can cause problems with help from a certified sports performance nutrition adviser in this free video on nutrition and eating healthy.

Duration : 0:1:39


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  1. mpfluegl Says:

    she is confusing B3 …
    she is confusing B3 (niacin) and D3.

  2. nbws6 Says:

    Niacin is NOT …
    Niacin is NOT vitamin D3!!!!

  3. Dominick1956 Says:

    No, there is an …
    No, there is an actual Vitamin D3. It is a much better formula than regular Vitamin D.

  4. markthenicholson Says:

    You write D3 – is …
    You write D3 – is this a typo and do you mean B3?