NAD+ Precursors and Cellular Ageing: What the Research Shows
A look at why NAD+ and Epitalon feature so heavily in longevity research protocols.
PeptiLab editorial team · Research desk · 18 May 2026 · 1 min read
Key takeaways
- NAD+ is a coenzyme central to mitochondrial energy production, and its cellular levels decline with age.
- Epitalon is a synthetic tetrapeptide studied for its interaction with telomerase activity.
- Both compounds are researched independently, but often appear in the same longevity-focused protocols.
Cellular ageing research spans many pathways, but two of the most commonly studied compounds in this space are NAD+ and Epitalon, for very different reasons.
NAD+ and mitochondrial function
Nicotinamide adenine dinucleotide (NAD+) is a coenzyme found in every living cell, playing a central role in energy metabolism and DNA repair signalling. Research models consistently show a decline in cellular NAD+ levels with age, which has made it a focus of longevity-adjacent research into mitochondrial function.
Epitalon and telomere biology
Epitalon is a synthetic tetrapeptide originally derived from research into the pineal gland peptide epithalamin. Studies have examined its interaction with telomerase, the enzyme responsible for maintaining the protective caps at the ends of chromosomes, a pathway of interest in cellular senescence research.
Why researchers pair them
NAD+ research tends to focus on the metabolic and energy-production side of ageing, while Epitalon research tends to focus on the genomic and telomere side. Because these are complementary rather than competing mechanisms, longevity protocols in the research literature frequently examine both in parallel.
Research-use-only
This summary reflects publicly available preclinical literature only. Neither compound is approved for human or veterinary use, and nothing here is medical advice.
Sources
- Conze D, Brenner C, Kruger CL. Safety and Metabolism of Long-term Administration of Nicotinamide Riboside Chloride in a Randomized, Double-Blind, Placebo-controlled Clinical Trial of Healthy Overweight Adults. Sci Rep. 2019;9(1):9772 · PMID 31278280
- Korkushko OV et al. Normalizing effect of the pineal gland peptides on the daily melatonin rhythm in old monkeys and elderly people. Adv Gerontol. 2007;20(1):74-85 · PMID 17969590
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