Raw Nicotinamide Mononucleotide powder (“NMN” and “β-NMN”) is a nucleotide derived from ribose and nicotinamide. Research has started to indicate that NMN may help improve a person’s life expectancy considerably. The best source of NMN is found in fresh fish that is high in niacin like tuna, salmon, mackerel, and swordfish. For vegetarians, there are several other excellent dietary sources of NMN. NMN’s one job is to increase a coenzyme called NAD, which decreases with age. Any benefits that are experienced are due to the increase of NAD.