The Definitive Peptide Research Reference Guide — Compound Review

Name: NAD+ Research Peptide
Brand: Purgo Labs
Price: 59.99 USD
Availability: InStock

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NAD+ Research Guide

Nicotinamide Adenine Dinucleotide (Oxidized Form)

Overview

Nicotinamide adenine dinucleotide (NAD+) is a dinucleotide coenzyme found in every living cell, where it serves as an indispensable electron carrier in cellular respiration and as a substrate for a growing family of regulatory enzymes. Unlike the peptides in this guide, NAD+ is not a synthetic compound — it is a naturally occurring biomolecule that has been the subject of Nobel Prize-winning research since Otto Warburg's foundational work on cellular respiration in the 1930s. The renewed scientific interest in NAD+ stems from a convergence of discoveries in the early 2000s: the identification of sirtuins as NAD+-dependent deacylases with profound effects on aging and metabolic regulation, the demonstration that NAD+ levels decline significantly with age across multiple species, and the development of NAD+ precursors (NMN and NR) as research tools for restoring NAD+ pools.

Mechanism of Action

NAD+ functions through two fundamentally distinct mechanisms: as a redox coenzyme in metabolic reactions, and as a substrate for regulatory enzymes that consume it in non-redox reactions. In its coenzyme role, NAD+ accepts electrons from metabolic substrates during glycolysis, the TCA cycle, and beta-oxidation of fatty acids, becoming NADH. NADH then donates these electrons to the mitochondrial electron transport chain (ETC), driving ATP synthesis via oxidative phosphorylation. In its substrate role, NAD+ is consumed by three classes of enzymes: (1) Sirtuins (SIRT1-7) — NAD+-dependent deacylases that regulate gene expression, mitochondrial biogenesis, DNA repair, and metabolic adaptation.

Research Evidence

NAD+ levels decline 40–60% between ages 20–60, correlating with hallmarks of aging (Covarrubias et al., 2021)
Sirtuin activation by NAD+ extends lifespan in C. elegans and improves healthspan in rodent models
SIRT1/SIRT3 activation promotes mitochondrial biogenesis via PGC-1α pathway
PARP-dependent DNA repair consumes NAD+; restoration improves genomic stability
NAD+ supplementation reduces age-related inflammation (inflammaging) in preclinical models

Bottom line: NAD+ is arguably the most important molecule in longevity research right now. Its role in sirtuin activation, DNA repair, and mitochondrial function makes it central to understanding why we age. The research-grade NAD+ supplied by Purgo Labs is for laboratory use only. If you

Research Protocols & Dosage

Evidence-based research protocols, administration routes, and dosage considerations for NAD+ are detailed in the full compound profile. See also: Dosage guide for NAD+.

Sourcing & Quality

NAD+ is available from Purgo Labs with third-party COA verification and research-grade purity standards. View NAD+ at Purgo Labs.