NAD+
Also known as Nicotinamide adenine dinucleotide, NAD, Coenzyme I
NAD+ is a dinucleotide coenzyme — not a peptide — central to cellular redox and energy metabolism, studied in aging and sirtuin research. A research-use profile with an accurate chemistry note.
The first thing to get right about NAD+ is what it is not: it is not a peptide. It belongs to a completely different class of molecule — a dinucleotide coenzyme — and it is listed alongside peptides here only because it sits in the same cellular-energy and longevity research conversation.
Chemically, NAD+ is built from two nucleotides linked through phosphate groups: one carries a nicotinamide ring, the other an adenine. That structure is what lets it shuttle electrons, flipping between an oxidized form (NAD+) and a reduced form (NADH). This page describes that role and the research contexts it appears in, without crossing into outcome or dosing claims.
NAD+ is not a peptide. It is a dinucleotide — two nucleotides, one bearing nicotinamide and the other adenine, joined through a pair of bridging phosphate groups. It functions as a coenzyme, cycling between its oxidized (NAD+) and reduced (NADH) forms as it carries electrons in metabolic reactions.
A coenzyme, not a peptide
Because so much catalog copy blurs the line, it is worth stating plainly: NAD+ has no amino acids and no peptide bond. It is a coenzyme, meaning it works as a partner molecule to enzymes rather than acting on its own. Its job across metabolism is to accept and donate electrons — a redox carrier.
That single function underlies an enormous amount of biochemistry, which is why NAD+ shows up in discussions of nearly every energy-producing pathway in the cell.
The research contexts it appears in
NAD+ is studied heavily in cellular-energy metabolism and mitochondrial research, and in work on the sirtuin family of enzymes, which use NAD+ as a co-substrate. It also appears throughout aging research, where scientists examine how cellular NAD+ pools change over time.
These are the areas researchers investigate it in; naming them maps the landscape rather than promising any effect. In the same conversation you will often see NAD+ precursors and NAD-adjacent research tools like 5-Amino-1MQ and the mitochondrial-derived peptides.
These are research areas the compound is associated with in the literature — not medical claims or intended uses.
Handling & storage
Handled as its own chemical class rather than as a peptide. Kept sealed, cool, and protected from light and moisture; prepared per the specific research protocol. Follow accepted laboratory practice and the certificate for the exact lot.
Verify a certificate by lot →Common questions
No. NAD+ is a dinucleotide coenzyme — two nucleotides (nicotinamide and adenine) joined by phosphate groups. It has no amino acids or peptide bonds and belongs to a different molecular class than the peptides it is often listed beside.
They are the two states of the same coenzyme. NAD+ is the oxidized form; when it accepts electrons it becomes NADH, the reduced form. The molecule cycles between them as it carries electrons through metabolic reactions.
Because it is a co-substrate for sirtuin enzymes and a central player in mitochondrial energy metabolism, both of which are recurring themes in aging research. That makes it a research context, not a claimed benefit.
This monograph is a research-use reference. It describes composition and the contexts in which the compound has been studied — it is not medical advice, a description of effects, or a recommendation for use. Sold strictly for laboratory and research use; not for human or animal consumption.