NAD+ runs your cells.
NAD+ (nicotinamide adenine dinucleotide) is a coenzyme found in every cell you have. It carries the electrons your mitochondria turn into ATP — cellular energy — and it powers the enzymes that read and repair your DNA: sirtuins and PARPs. More than 500 enzymatic reactions depend on it. When NAD+ is abundant, cells run well. When it runs low, everything downstream slows.