Recommended twice a week for optimal benefits in metabolism, mood, and anti-aging! Boost Energy, Enhance Brain Function, and Support Cellular Health. NAD+ (Nicotinamide Adenine Dinucleotide) is a vital coenzyme that plays a key role in energy production, DNA repair, and overall cellular function. As we age, NAD+ levels naturally decline, leading to fatigue, brain fog, and decreased metabolic function.