Life Extension NAD+ Cell Regenerator 300 mg - 30 Vegetarian CapsulesLife Extension NAD+ Cell Regenerator delivers 300 mg of NIAGEN nicotinamide riboside per serving, a clinically studied and patented form of vitamin B3 that effectively raises nicotinamide adenine dinucleotide (NAD+) levels in the body, supporting cellular energy production, combating general fatigue at the cellular level, and helping maintain the youthful NAD+ concentrations your cells rely on to synthesize adenosine triphosphate (ATP), the primary