A naturally occurring coenzyme central to cellular energy metabolism, studied in the context of aging and metabolic health.
NAD+ (nicotinamide adenine dinucleotide) is a coenzyme found in every living cell, playing a central role in energy metabolism and hundreds of enzymatic reactions. Cellular NAD+ levels are known to decline with age, which has driven substantial research interest in its role in aging and metabolic health.
NAD+ occurs naturally in the body and in food. Supplement forms of NAD+ precursors are available over the counter as dietary supplements, but injectable or high-concentration research-grade NAD+ is not FDA-approved as a drug and is intended solely for laboratory research.