Nicotinamide Mononucleotide (NMN) is an efficient precursor to the essential vitamin B3 metabolite, NAD+. NAD+ is essential to cellular energy production and mitochondrial function. NMN Plays a crucial role in the body including the production of energy in the mitochondria , DNA repair , cell survival and metabolism – reservatrol is an antioxidant and has been touted as a natural way to slow aging.