From the Tru Niagen website FAQ:
NIAGEN® helps your cells produce the coenzyme NAD+ which helps a cell’s mitochondria convert fat into fuel.* Vitamin C is essential to the synthesis of carnitine which shuttles fatty acids into the mitochondria for metabolism and ATP production.
Because both vitamin C and TRU NIAGEN™ are important for cellular health and energy production, there is active research surrounding the exciting possibilities of TRU NIAGEN™ working synergistically with vitamin C and other similar nutrients.*
Anybody having views? I happens to be I have used vitamin C at 2 gram for some weeks recently and i did have a sense that it helps.