January 26, 2026 · 6 min read
What is NAD+? Mitochondria, Sirtuins & Longevity
NAD+ is a foundational metabolic coenzyme at the center of longevity, mitochondria and sirtuin research.
What is NAD+?
Nicotinamide Adenine Dinucleotide (NAD+) is a critical redox coenzyme required for electron transport, sirtuin activity and PARP-dependent DNA repair. Cellular NAD+ levels decline significantly with age.
Why is NAD+ studied?
NAD+ is investigated in mitochondrial biogenesis models, sirtuin-mediated deacetylation research and DNA damage response studies. Restoring NAD+ levels has been associated with improved metabolic and longevity endpoints in preclinical animal work.
NAD+ vs NR vs NMN
NR (Nicotinamide Riboside) and NMN (Nicotinamide Mononucleotide) are precursor molecules that raise intracellular NAD+. Direct NAD+ administration is studied in protocols investigating cellular uptake, bioavailability and IV versus subcutaneous kinetics.
Featured research peptide
NAD+ — 500 mg
NAD+ is a critical coenzyme found in every living cell, central to redox reactions and mitochondrial energy production. It is widely studied in longevity, metabolic, and cellular repair research.