NMN (β-Nicotinamide mononucleotide) is a derivative of Vitamin B3 (niacin) and occurs naturally in fruits & vegetables.
Supplementing NMN increases the levels of NAD+ (nicotinamide adenine dinucleotide) in the body. The decline of NAD+ levels with age is causally linked to many age related disorders such as Alzheimer's, cancer, arthritis and osteoporosis. Increasing NAD+ levels has shown to prevent and reverse some of these disorders in animal studies.
Levels of NAD+ decline with age, recommended daily dosage: