What Is NAD+? A Research Overview

NAD+ (nicotinamide adenine dinucleotide) is a naturally occurring coenzyme that functions as a central electron carrier in cellular metabolism and as a substrate for NAD+-dependent signaling enzymes such as sirtuins and PARPs. It is widely used as a tool in preclinical and in vitro research on cellular energy, redox biology, and aging. Bolt Peptide supplies NAD+ strictly for research use only (RUO) — it is not approved for human or veterinary use and is not an FDA-approved drug.

Quick facts

• Class: coenzyme (pyridine dinucleotide)
• Research focus: cellular energy metabolism, redox (NAD+/NADH) reactions, sirtuin and mitochondrial research
• Form: lyophilized powder, ≥99% HPLC purity, third-party tested, USA-lyophilized

What is NAD+?

NAD+ is a dinucleotide built from two nucleotides joined through their phosphate groups — one bearing an adenine base and the other a nicotinamide ring. It exists in two interconvertible forms: the oxidized form (NAD+) and the reduced form (NADH). This pair shuttles electrons between metabolic reactions, making NAD+ one of the most important redox carriers in the cell. Beyond metabolism, NAD+ is also consumed as a substrate by signaling enzymes, linking the cell’s energy state to processes researchers study in models of stress and aging.

What does the research show?

In preclinical and in vitro work, NAD+ and its metabolism have been studied as a hub connecting energy metabolism to cellular signaling. Reviews describe NAD+ as a research target in cell and animal models of age-related metabolic change, where NAD+ levels shift under different conditions and NAD+-consuming enzymes compete for the available pool (Mouchiroud et al., 2013). Other reviews summarize how NAD+ participates in oxidation–reduction reactions and acts as a co-substrate for deacylases and ADP-ribosyltransferases in laboratory systems (Amjad et al., 2021). These findings are preclinical and do not establish any effect or safety profile in humans.

Mechanisms studied in the lab

• Redox cofactor: cycles between NAD+ and NADH in glycolysis, the citric acid cycle, and the electron transport chain in model systems.
• Sirtuin substrate: a co-substrate for sirtuin deacylases used to probe links between metabolic state and protein modification.
• PARP substrate: consumed by poly(ADP-ribose) polymerases during studies of DNA-damage signaling in cultured cells.
• NAD+/NADH ratio: studied as a readout of cellular energy status in biochemical assays.

Research status and safety

NAD+ is a research compound. All data above derive from in vitro experiments, cell cultures, and animal models — not controlled human use. NAD+ is not approved by the FDA and is not intended for human or veterinary use. It should be handled only by qualified researchers following institutional safety practices.

Handling

This NAD+ ships as a lyophilized powder (≥99% HPLC purity, third-party tested) and should be stored cold and protected from light and moisture. For reconstitution, see our guide on how to reconstitute a research peptide. Related items are in our anti-aging research peptides. To view this compound, see NAD+ — ≥99% pure, third-party tested.

FAQ

Is NAD+ the same as NADH?

No. NAD+ is the oxidized form and NADH is the reduced form of the same coenzyme. They interconvert as electrons are transferred, and the ratio is studied as an indicator of cellular energy state.

Is Bolt Peptide’s NAD+ for human use?

No. It is sold strictly for research use only. It is not a dietary supplement, not a drug, and not approved for human or veterinary use.

References

1. Mouchiroud L, et al. NAD+ metabolism, a therapeutic target for age-related metabolic disease. Crit Rev Biochem Mol Biol, 2013.
2. Amjad S, et al. Role of NAD+ in regulating cellular and metabolic signaling pathways. Mol Metab, 2021.

For research use only. Not for human or veterinary use. Statements have not been evaluated by the FDA.