NAD+ Cell Regeneratorª and Resveratrol Eliteª is our Best in Class formula for energy support. It combines 300 mg of NIAGEN¨ nicotinamide riboside with an ultra-bioavailable trans-resveratrol (as well as bioavailability-enhanced forms of the phytonutrients quercetin and fisetin) to fight general fatigue and promote longevity with every dose.