1. Gerard Fowke Gerard Fowke United States says:

    Instead of taking NIAGEN (nicotinamide riboside) which has to be converted to NAD; why not take a substance that is a form of NAD [either NADH or Coenzymated B3 (nicotinamide adenine dinucleotide)].  I don’t know the conversion rate of NIAGEN to NAD, but I immediately feel mental alertness when taking either of these forms of NAD at 1/20th the dose of NIAGEN. Whereas, I had to stop taking NIAGEN before I felt the same effect (see my post of October 10, 2016 at 5:27 PM).  Why isn’t there studies showing results of how much NAD increases in the cells of the body when taking the direct forms of NAD? The only reason I can think of is ChromaDex doesn’t have a patent on the forms of NAD and would not want to do a study on something that would be in direct competition with their product.

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