NMN — nicotinamide mononucleotide — is one of the most studied NAD+ precursors in longevity science. As a direct biosynthetic precursor to NAD+ (nicotinamide adenine dinucleotide), NMN is central to research on cellular energy metabolism, DNA repair pathways, and the biology of aging.* Codeage NMN formulas are available in multiple formats — liposomal NMN for advanced delivery, NMN powder, NMN capsules, and sublingual NMN — in dosages including NMN 500mg and NMN 1000mg.