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It also means allergic reactions are unlikely, though not impossible, since any foreign substance can theoretically trigger sensitivity in susceptible individuals

The problem is most people are not getting enough of it

NAD+ directly relevant to the methyl/nicotinamide axis modulated by NNMT inhibition

Effect of Epitalon on biomarkers of aging, life span, and spontaneous tumor incidence in rats. Biogerontology, 4(4), 193202

That is the textbook version
