TRU NIAGEN - Nicotinamide Riboside 300mg - 90 CapsulesTRU NIAGEN contains the patented NIAGEN form of nicotinamide riboside backed by more human clinical research than any other NR supplement. Multiple peer reviewed studies confirm that NIAGEN significantly raises blood NAD+ levels. NAD+ is a coenzyme that naturally declines by up to 50% between ages 40 and 60, and is critical for mitochondrial efficiency, DNA repair, sirtuin activation, and metabolic regulation. One of the most validated healthy aging