The latest and best NAD precursor for anti-aging and longevity is NMN (Nicotinamide Mononucleotide) and NR (Nicotinamide Riboside). NMN boosts NAD+ levels, supporting cellular energy, DNA repair, and longevity. Research suggests NMN is more effective due to direct conversion into NAD+. https://www.austincellularnutrition.com/nmn