Nicotinamide Mononucleotide(NMN) boosts NAD+. NAD+ is essential for metabolism, cellular repair, and resist DNA damage. But NAD+ gets depleted with age. NMN Longiva uses BIOMSFYTM gut flora technology to nurture specific gut flora which aids bioabsorption and metabolism of NMN. This is a 100% dairy free and gluten free, vegan, non-GMO product.