NAD, short for nicotinamide adenine dinucleotide, is a coenzyme naturally present in all living cells and recognized as a core part of the normal cellular environment, with related compounds such as NMN. In multi-nutrient formulas it is often paired with ingredients such as grape seed extract, resveratrol, ALA, green tea extract, turmeric root, glutathione, astaxanthin, quercetin, and pterostilbene to create synergistic coenzyme-focused blends for everyday routines.