Two longevity-research staples: the telomere-studied tetrapeptide vs the cellular-energy coenzyme behind the NAD+ wave. Here's a neutral, sourced side-by-side — no hype, every claim links to its evidence.
Also: AEDG, Epithalon
Epitalon is a man-made peptide, which means it is a very short chain of building blocks called amino acids. Scientists created it in a lab to copy something the body makes in a small gland in the brain.
Also: Nicotinamide Adenine Dinucleotide, NAD
NAD+ is a tiny molecule that every living thing needs to stay alive. It is not really a peptide, but it is sold in powder form alongside peptides for lab studies.
| Epitalon | NAD+ | |
|---|---|---|
| Research status | Preclinical | Approved |
| Highest-tier evidence | Peer-reviewed study | Peer-reviewed study |
| Research citations | 18 | 30 |
| Dosing routes | SubQ | — |
| Receptor targets | telomerase expression, pineal axis | — |
| Half-life | — | — |
| Known side effects | 2 | 1 |
Top preclinical research areas — cited studies for each.
Reported routines — research only, not medical advice.
Not yet documented for NAD+ — being compiled.
Key studies — click through to verify each on PubMed.
18 sourced studies
Overview of Epitalon-Highly Bioactive Pineal Tetrapeptide with Promising Properties
Epitalon increases telomere length in human cell lines through telomerase upregulation or ALT activity
PubChem - Compound - Epitalon
Epithalon peptide induces telomerase activity and telomere elongation in human somatic cells.
30 sourced studies
NAD+ metabolism in health and disease.
The simultaneous measurement of nicotinamide adenine dinucleotide and related compounds by liquid chromatography/electrospray ionization tandem mass spectrometry.
Nutrient-sensitive mitochondrial NAD+ levels dictate cell survival
Nutrient-sensitive mitochondrial NAD+ levels dictate cell survival.
Decision Guide
Neither is a “winner” — they suit different goals. Compare the documented benefits and evidence above against what you’re actually trying to achieve, note the research status (approved vs research-stage), and read each full guide before deciding. Many people also stack peptides rather than pick one.
Source Epitalon
Source NAD+
The most-used peptide combinations, what the research actually says, and where to buy — one page, one email.
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