Nicotinamide riboside, nicotinic acid, ribose and nicotinamide are the four nucleotides from which nicotinamide mononucleotide (NMN) is derived. Numerous enzymes in humans use NMN to synthesize NADH (nicotinamide adenine dinucleotide). NMN is a significant precursor of NAD+, an important enzyme for many cellular processes such as metabolism, repair of DNA, cell growth and survival. In laboratory animals and cells studies, NMN can prevent as well as reverse conditions associated with aging by enhancing NAD+ bioavailability. Since NADH functions as cofactor for intramitochondrial processes and has effects on sirtuins as well as PARP; thus, NMN is studied on animal models as a possible anti-aging agent that also contains neuroprotective properties. However, human studies have not yet shown its anti-aging properties while supposed health benefits have only been proposed through in vitro tests or in animal models.