Pure Lab Vitamins - NADH 20MG - 60 Veg Capsules - NPN: 80092767 -- Pure Lab Vitamins NADH 20MG is a reduced and active form of NAD+, a Vitamin B-3 Derivative, that is vital to cellular energy production. Although it provides an energy boost to every cell in the body, NADH is most important for the brains energy supply and its cognitive functions.