Epitalon
Lab dish and one research group. No sleep or lifespan trial.
Grade C: Animals and lab only
Looks good in rats or in a dish. Not proven in people.
The grade is for the use people talk about, not for every use. Filed under: Longevity.
How it works
A lab-made chain of 4 amino acids, modeled on an extract of the pineal gland.
How it was given in studies
Not confirmed. A 2026 review found only a few small human studies, and its summary does not say how the peptide was given.
This is what the studies did. It is not a how-to. Source: 2026 evidence review. International Journal of Molecular Sciences.
What studies saw
Telomeres got longer in cells in a dish. Two small studies found higher melatonin. No trial has measured sleep or lifespan in people.
The trade-off
Nearly all the human work comes from one circle of researchers. A 2026 review found no proper randomized trial.
When it showed up, in studies
No human timeline for sleep or aging.
Sources
Put this grade on your site
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Keep going
We show what studies found. We never tell you what to take. Doses vary by study. Check the sources and talk to a doctor.