NAD+ 500mg

NAD+ 500mg — Research Overview

Nicotinamide adenine dinucleotide (NAD+) is a core redox coenzyme found in every living cell. It doesn’t just carry electrons for energy metabolism; it’s also a substrate for several classes of regulatory enzymes. Biosynthesis happens through a few different routes: the de novo pathway from tryptophan, the Preiss-Handler pathway from nicotinic acid, and the salvage pathway using nicotinamide and nicotinamide riboside. Researchers first systematically characterised the way NAD+ levels drop with age in the 2010s. Since then, it’s become a major focal point in aging biology, with both precursor supplementation and direct NAD+ research drawing huge interest from scientific and commercial sectors alike.

Mechanism of Action

NAD+ pulls double duty in cellular biology. It acts as an oxidised electron acceptor during glycolysis, the TCA cycle, and fatty acid oxidation, where it’s reduced to NADH. Beyond that, it is a substrate for three distinct families of NAD+-consuming enzymes. Sirtuins (SIRT1–SIRT7) are NAD+-dependent deacylases that regulate gene expression, stress responses, mitochondrial biogenesis, and DNA repair. PARP enzymes (poly-ADP-ribose polymerases) also consume NAD+ to repair DNA, typically activating in response to genotoxic stress. Lastly, CD38 is a major NAD+-consuming enzyme involved in calcium signalling that contributes to NAD+ turnover and its well-documented age-related depletion.

As NAD+ levels drop with age, sirtuin activity falters and PARP-mediated DNA repair capacity weakens. These two processes are central to the cellular dysfunction we see in aging. Because of this, researchers have focused on NAD+ repletion to try and kickstart these activities again. This has led to a wealth of preclinical work involving NAD+ precursors like NMN and NR, as well as direct NAD+ itself, to better understand how it affects mitochondrial function, senescence, inflammation, and tissue regeneration.

Research Context

There’s a massive body of research exploring NAD+ within the context of aging biology. Preclinical studies using aged rodent models have shown that restoring NAD+ levels—whether through direct delivery or precursors—consistently reverses several hallmarks of aging at both cellular and physiological levels. This includes everything from better mitochondrial function and muscle performance to improved glucose metabolism and vascular density. Sirtuins, particularly SIRT1 and SIRT3, seem to be the primary mediators driving these specific effects.

Researchers have looked closely at NAD+ and its precursors in models of obesity, insulin resistance, and non-alcoholic fatty liver disease. Once NAD+ is replenished, SIRT1 activation drives PGC-1α-mediated mitochondrial biogenesis and fatty acid oxidation while reducing lipogenesis. It is a sequence that carries significant weight for metabolic disease research.

Researchers often study NAD+ alongside peptides linked to longevity. It’s common for research panels looking into aging mechanisms to pair NAD+ with Epitalon 10mg—a peptide that activates telomerase—and GHK-Cu 50mg, which affects gene expression patterns found in younger tissues. Testing several hallmarks of aging within a single experimental setup has become a standard approach in the field. For those focused on metabolic health, studies sometimes incorporate 5-amino-1MQ 10mg to target the NNMT enzyme within that same metabolic pathway.

Laboratory Handling

We supply NAD+ 500mg as a lyophilised powder that’s highly water-soluble. For in vitro work, you’ll typically want to dissolve it in sterile PBS or culture medium right before you need it, since NAD+ tends to hydrolyse at neutral-to-alkaline pH over time. It’s best to prepare aqueous solutions fresh and use them promptly. To keep the material potent, store the lyophilised powder at −20°C and keep it away from light and moisture. Purity verification by HPLC remains the standard for these research-grade preparations. This product is for research purposes only and is not intended for human administration; it should only be handled by qualified investigators.

For research purposes only. Not intended for clinical or therapeutic use.

References

• Yoshino J, et al. NAD+ intermediates: the biology and therapeutic potential of NMN and NR. Cell Metab. 2018;27(3):513–528.
• Cantó C, et al. The NAD+ precursor nicotinamide riboside enhances oxidative metabolism and protects against high-fat diet-induced obesity. Cell Metab. 2012;15(6):838–847.
• Imai SI, Guarente L. NAD+ and sirtuins in aging and disease. Trends Cell Biol. 2014;24(8):464–471.
• Fang EF, et al. NAD+ replenishment improves lifespan and healthspan in ataxia telangiectasia models via mitophagy and DNA repair. Cell Metab. 2016;24(4):566–581.