NMN, β-Nicotinamide Mononucleotide is a nucleotide derived from ribose and nicotinamide. NMN belongs to Vitamin B, participating in metabolism in the body, can be used to prevent pellagra or other niacin defection disease. NMN could be used as feed/human nutrition, booth the growth and strengthen the immunity. NMN play an important role in the production of human cell energy, which is involved in the synthesis of intracellular NAD.