NMN is a nicotinamide mononucleotide, which is inherent in the human body and is also abundant in some fruits and vegetables. In humans, NMN is a precursor to NAD+, NAD+ is the key to maintaining a youthful state, NMN is the most effective way to supplement NAD+, main components and content data: ?-Nicotinamide Mononucleotide 200 mg (contains daily serving)