Nicotinamide mononucleotide (NMN powder) is an organic compound with the chemical formula C11H15N2O8P, which plays an important role in the energy production of human cells. It is involved in the synthesis of intracellular NAD (nicotinamide adenine dinucleotide, an important coenzyme for cell energy conversion). Nicotinamide mononucleotide, the substance originally exists in the human body, but decreases with age. Earlier experiments confirmed that nicotinamide mononucleotide NMN can increase NAD in various organs in experimental mice, thereby inhibiting the aging of nerves and blood vessels, and improving the symptoms of diabetes.