NMN18000 is a brand name of a dietary supplement that contains NMN (nicotinamide mononucleotide) and resveratrol. NMN is a molecule that is found in all living cells and is a precursor of NAD+ (nicotinamide adenine dinucleotide), a coenzyme that is involved in cellular respiration, energy metabolism, DNA repair and other important biological processes. Resveratrol is a plant compound that has anti-inflammatory and antioxidant properties and may activate the same pathways as NMN.