Cell Guard-NR features therapeutic levels of NR (nicotinamide riboside chloride) in a form called Niagen®; resveratrol as Verite™; and pterostilbene. NR is a form of vitamin B3, and precursor to NAD+, which is found in all living cells. It’s key for energy production, the stress response, DNA repair and gene expression, playing a role in over 500 reactions in the body. Antioxidant rich resveratrol and pterostilbene protect your body from oxidative stress, supporting optimal cell function. This complimentary blend of nutrients supports the healthy life cycle of cells, cellular repair, rebalances oxidative stress and promotes healthy aging.