NMN can be naturally synthesized in cells, and can also be derived from a variety of foods, including broccoli,cabbage,cucumber,edamame, avocado and the like. In humans, NMN is a precursor of synthetic NAD+, and its physiological function is mainly manifested by increasing NAD+ levels. NAD+ is also called coenzyme I, and it is called nicotinamide adenine dinucleotide.
NAD+participates in hundreds of reactions not only as a coenzyme but also as a substrate for a variety of signal reactions.