Peptilex
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The book

Longevity

Epitalon

Peptilex evidence grade ABCDEUpdated 19 Oct 2026 How grades work
Type
Synthetic tetrapeptide (Ala-Glu-Asp-Gly)
Main use or focus
Anti-aging; telomeres; sleep and melatonin
Also known as
Epithalon

Key results

Research stageFrom lab to approval
  1. LabTelomeres longer in human cells (2025)reached
  2. Animal20–40% longer mean lifespan (rodents)reached
  3. HumanRegistered human trials are nextnext step
  4. Randomized trialsnot yetnot yet
  5. Approvalnot yetnot yet

Source: Peptilex study tracker (weekly review)

20–40%

longer mean lifespan, and fewer tumors, in rodent studies

Animal studiesRodent studies

2025

independent confirmation that it lengthens telomeres in human cells

Lab studyHuman cell study

Where it stands

Rodent studies linked it to 20–40% longer mean lifespan and fewer tumors, and an independent group confirmed in 2025 that it lengthens telomeres in human cells. Registered human trials are the next step.

Go deeper

Full profile in the book

What it is, how it acts, the key studies, risks and open questions.

Peptilex – The Peptide Encyclopedia, book cover

Peptilex – The Peptide Encyclopedia

  • 34 peptides – from semaglutide to BPC-157 – in one book
  • An evidence grade (A–E) and the key studies for every peptide
  • Where each one stands in 2026 – US, EU and Switzerland

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Research at a glance

Publications by typePubMed, all years
All papers141
Human studies47
Animal studies only85
Randomized trials0
Meta-analyses & systematic reviews0

Source: PubMed and ClinicalTrials.gov via the Peptilex study database

Registered trials

ClinicalTrials.gov · name in study title · ongoing first

No registered trial yet on ClinicalTrials.gov.

Latest key papers

PubMed · newest first

  1. 2025
  2. 2025
  3. 2025

    Overview of Epitalon-Highly Bioactive Pineal Tetrapeptide with Promising Properties

    ReviewAraj SK et al. · International Journal of Molecular SciencesPMID 40141333

  4. 2025
  5. 2022
  6. 2006
  7. 2005
  8. 2002

    Epithalon decelerates aging and suppresses development of breast adenocarcinomas in transgenic her-2/neu mice

    Animal studyAnisimov VN et al. · Bulletin of Experimental Biology and MedicinePMID 12459848

In the research news

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