Is NAD+ actually a peptide?

No. NAD+ is a coenzyme (a dinucleotide), not a peptide, but it is widely sold by research peptide vendors and studied for the same longevity and metabolic goals.

Why do NAD+ levels matter for aging?

NAD+ powers energy production, sirtuin activity, and DNA repair, and its decline with age is associated with reduced mitochondrial function, which is why restoring it is a major longevity research focus.

What is the difference between NAD+ and NMN?

NMN is a precursor the body converts into NAD+, so NMN is often used to raise NAD+ levels indirectly, whereas NAD+ supplies the coenzyme directly.

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Longevity & Anti-aging

Cognitive & Nootropic

Research Chemical

NAD+

Also known as: NAD+, NAD, Nicotinamide Adenine Dinucleotide

NAD+ is an essential coenzyme central to cellular energy production and DNA repair whose levels decline with age. It is studied and supplemented for longevity, mitochondrial function, and metabolic health. Note: NAD+ is a coenzyme, not a peptide, commonly sold alongside longevity research compounds.

Mechanism of Action

Nicotinamide adenine dinucleotide (NAD+) is a redox coenzyme that shuttles electrons in glycolysis, the citric acid cycle, and oxidative phosphorylation to generate ATP. Beyond energy metabolism it serves as a required substrate for sirtuins, which regulate gene expression and mitochondrial biogenesis, and for PARP enzymes involved in DNA repair, as well as CD38 in immune signaling. Cellular NAD+ levels decline with age, impairing these pathways, so direct administration or precursor loading aims to restore the NAD+ pool. Replenished NAD+ is investigated for improving mitochondrial efficiency, stress resistance, and markers of biological aging.

Half-life: Short for free NAD+; cellular pools are continuously recycled rather than reflecting a single plasma half-life
Administration Routes: subcutaneous
Research Status: Research Chemical

NAD+

Also known as: NAD+, NAD, Nicotinamide Adenine Dinucleotide