NAD+
Nicotinamide adenine dinucleotide — a coenzyme present in all living cells. Central to mitochondrial energy production, DNA repair, and sirtuin activation. Studied extensively in the context of cellular aging.
For laboratory and in vitro research purposes only. Not for human consumption.
What is NAD+?
NAD+ (nicotinamide adenine dinucleotide) is a coenzyme present in every living cell, essential to hundreds of metabolic processes. It functions as an electron carrier in mitochondrial energy production, and serves as a required substrate for sirtuins (longevity-associated enzymes) and PARP enzymes involved in DNA repair. NAD+ levels decline significantly with age — studies show tissue concentrations may fall by more than half between young adulthood and age 60. Research into NAD+ restoration has become one of the most active areas in longevity biology.
every cell needs it.
it declines with age.
NAD+ is required for over 500 enzymatic reactions in human cells. It is the substrate for sirtuins — the enzymes most associated with longevity gene expression. Research consistently shows NAD+ levels fall dramatically with age, and restoration studies in aged animal models have shown reversal of multiple aging hallmarks.
How NAD+ works in research models
NAD+ is a critical cofactor in cellular redox reactions, serving as an electron carrier in the mitochondrial electron transport chain. Beyond bioenergetics, research has identified NAD+ as an essential substrate for sirtuins (SIRT1–7) — NAD+-dependent deacetylases that regulate gene expression, mitochondrial biogenesis, and DNA repair — and for PARP enzymes that repair DNA strand breaks.
sirtuins. dna repair.
mitochondrial energy.
NAD+ is the critical substrate for SIRT1–7 (sirtuins) and PARP enzymes — the molecular machinery behind gene regulation, DNA repair, and mitochondrial biogenesis. Research in aged rodents has demonstrated that restoring NAD+ levels reverses markers of aging at the cellular level.
NAD+ intermediates: the biology and therapeutic potential of NMN and NR.
Cell Metab · 2018 · PMID: 29249689
Therapeutic potential of NAD-boosting molecules: the in vivo evidence.
Cell Metab · 2018 · PMID: 29514064
NAD+ in aging, metabolism, and neurodegeneration.
Science · 2015 · PMID: 26785481
Direct NAD+ supplementation requires delivery mechanisms that bypass gut metabolism (subcutaneous or IV), as oral bioavailability of intact NAD+ is limited. Preclinical studies in rodents have used intraperitoneal injections of 500 mg/kg to demonstrate cellular NAD+ restoration.
You ask, we answer.
NMN and NR are oral precursors that are converted to NAD+ intracellularly. Direct NAD+ via subcutaneous or IV delivery bypasses the conversion step, allowing more controlled pharmacokinetic studies of NAD+ itself. Both approaches are active areas of research.
Yes. Multiple studies have confirmed that NAD+ levels fall significantly with age in multiple tissues, including blood, skeletal muscle, and liver. By age 60, tissue NAD+ levels may be less than half of those in young adults in some models.
NAD+ is the active coenzyme. NMN (nicotinamide mononucleotide) and NR (nicotinamide riboside) are precursor molecules that the body converts into NAD+ intracellularly. Direct NAD+ supplementation via subcutaneous or IV routes bypasses the conversion step, making it useful for controlled pharmacokinetic research.
NAD+ is the required substrate for sirtuins (SIRT1-7) — a family of enzymes that regulate gene expression, mitochondrial biogenesis, stress resistance, and DNA repair. Research has demonstrated that declining NAD+ impairs sirtuin function, and that restoring NAD+ in aged animals reverses several cellular hallmarks of aging.
Research Use Only
All Rowan Peptides products are intended strictly for laboratory and in vitro research purposes. They are not approved by the FDA and are not intended for human consumption, veterinary use, or any therapeutic application. By purchasing, you agree to our Terms of Service and Indemnity Waiver. Rowan Peptides LLC operates as a chemical supplier only.
Added this to my longevity research stack. The sirtuin and mitochondrial research on NAD+ precursors is compelling and Rowan's product quality is what you need for meaningful research. COA confirms 99% purity.
Run a metabolic research protocol and NAD+ is something I go through regularly. Most vendors I've tried have inconsistent quality on this one but Rowan's 500mg is consistently clean. Already on my third order.
Solid. My one note is I wish the 500mg came with a slightly larger reconstitution guide but everything else was great. Purity is real, shipping was fast.
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