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Medical notice — For research and educational purposes only. Not medical advice. Consult a licensed physician before using any peptide or compound.

Epitalon

longevitysleepanti-aging
Regulatory status — Research use only — not approved for human use

Epitalon (also written Epithalon) is a synthetic tetrapeptide (Ala-Glu-Asp-Gly) derived from the pineal gland peptide epithalamin. Preliminary evidence from in vitro and animal studies indicates it may influence telomerase activity, antioxidant defense, circadian melatonin rhythms, and epigenetic chromatin remodeling. No randomized controlled trials in humans have been conducted, and all efficacy and safety data currently come from Tier 3 (animal and in vitro) sources.

Evidence coverage

35/42 claims verified by independent fact-checker.

Pepteligence regenerates entries quarterly and when new high-tier evidence appears.

Quick facts

Half-life
—
Typical dose
See research context
Route
[insufficient evidence in research packet]
Frequency
[insufficient evidence in research packet]
Cycle length
—
Evidence strength
Animal models

Suggested labs for this peptide class — educational reference only; not medical advice.

TL;DR

  • Half-life: — — dosed —.
  • Administered via —.
  • Evidence base: animal model studies.
  • Primary goals: longevity, sleep, anti-aging.
EVIDENCE HIERARCHYRCTsObservationalAnimal studiesAnecdotal

Primarily animal data

How we evaluate evidence →

How it works

BPC-157 acts on multiple parallel pathways — this multi-system action underlies its broad tissue repair profile.

Epitalon is the synthetic tetrapeptide Ala-Glu-Asp-Gly (AEDG), originally isolated from bovine pineal epithalamin. In vitro evidence indicates that Epitalon increases telomere length in human cell lines through upregulation of telomerase or activation of the alternative lengthening of telomeres (ALT) pathway [3]. Separately, animal studies indicate that Epitalon activates telomerase and enhances bovine oocyte maturation and post-thawed embryo development in vitro [4]. In vitro evidence also indicates that Epitalon exhibits antioxidant activity and improves delayed wound healing in high-glucose-injured human retinal pigment epithelial cells, with antioxidant effects comparable to those of melatonin [10]. Animal studies indicate that Epitalon protects post-ovulatory mouse oocytes from aging-related damage in vitro at 0.1 mM concentration, again with antioxidant mechanisms proposed [11]. At the epigenetic level, mechanistic data point to Epitalon and related peptide bioregulators modifying chromatin condensation in lymphocytes from elderly individuals, reactivating repressed chromatin and deheterochromatinizing nucleolar organizer regions in cells from donors aged 75–88 years [src:be0b2b95-d849-47b9-ad82-945f79489992; src:8827b5d6-0ba0-4255-9b39-0b4cc140de51]. Preliminary in vitro evidence also suggests that Epitalon stimulates gene expression and protein synthesis during neurogenesis in human mesenchymal stem cells, potentially through epigenetic mechanisms [16]. Animal studies indicate that Epitalon increases mitochondrial staining (MitoTracker Red) approximately 1.5-fold in human pineal gland cells during senescence in vitro, suggesting effects on mitochondrial biogenesis or membrane potential [17]. In vitro evidence additionally indicates that Epitalon modulates monocyte and macrophage proliferative activity and inflammatory pathways in the THP-1 cell line [18]. In rat models, animal studies indicate that Epitalon decreases cathepsin B and D activity in liver and kidney lysosomes [19], reduces pancreatic amylase activity under various lighting conditions [20], modulates thyroid gland function and thyrotropic activity of the hypophysis [6], and stimulates proliferative activity in hypothalamic preoptic area explants at 2 ng/ml [21]. Animal studies further indicate that Epitalon may provide renoprotective effects against rhabdomyolysis-induced kidney injury by reducing oxidative stress and energetic imbalance [22]. Expert commentary suggests that Epitalon and Vilon regulate CCL11 (eotaxin) and HMGB1 (alarmin) gene expression, which are proposed molecular markers of aging [23]. All mechanisms described above derive from Tier 3 (animal or in vitro) sources; direct evidence linking these mechanisms to human physiology has not been established.

What the research says

Research summary content coming soon. Check the references section for indexed studies.

100%50%25%0%00h1t½0h2t½0h3t½0h4t½0h
Approximate plasma concentration over 4 half-lives (0h × 4 = 0h)

Protocol lifecycle

BeforeDuringAfter

Before — Pre-cycle readiness

Readiness checklist

Evidence awareness
  • Understand that all human-relevant Epitalon data are Tier 3 (animal/in vitro); no human RCTs exist.
  • Acknowledge that efficacy and safety in humans remain unestablished.
Medical oversight
  • Discuss use with a licensed clinician familiar with peptide research.
  • Disclose all concurrent medications given the absence of drug–drug interaction data.
Regulatory awareness
  • Epitalon has no FDA, EMA, or Health Canada approval; it is not an approved therapeutic in any major jurisdiction represented in this research packet.
  • No evidence-based pre-use preparation guidance exists for humans; consult a qualified clinician before use.
  • Baseline health assessment is prudent given the complete absence of controlled human safety data.

During — Active protocol

Protocol notice — The following describes common protocols reported in research and community sources. This is not medical advice. Dosing, frequency, and duration should be determined with a licensed physician familiar with peptide research.
  • No human clinical trial protocols exist to guide dosing, monitoring, or frequency during use.
  • Animal study dosing (e.g., 1 mcg/mouse s.c. weekly in SAM mice [8]) cannot be reliably translated to human protocols.

After — Post-cycle

  • No evidence-based cycling or post-use guidance exists for humans.
  • Long-term effects following cessation are unstudied in humans.

Stacks it appears in

Epitalon is typically used as a standalone compound. Stack data coming soon.

Related peptides

Other compounds indexed on Pepteligence that share research tags with Epitalon. Educational context only.

Sermorelin

Tier 3
sleepanti-aging

MOTS-c

Tier 3
longevity

DSIP

Tier 2
sleep

GHK-Cu

Tier 3
anti-aging

Safety

Common side effects

  • ·No controlled human data available to characterize common side effects.

Rare side effects

  • ·No controlled human data available to characterize rare side effects.
Safety notice — Serious / theoretical risks:
  • No controlled human data available to characterize serious adverse events; the absence of such data does not imply safety.

Contraindications

  • ·No formal contraindications have been identified in controlled human studies; the absence of human safety data precludes definitive statements about safety in any specific population, including pregnancy, lactation, renal impairment, and hepatic impairment.

Community experiences

Community content — User-submitted experiences are self-reported and have not been verified. They do not constitute medical advice. Pepteligence aggregates community data under Section 230 protections.

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Epitalon — at a glance

PropertyEpitalon—
Half-life——
Route——
Typical doseSee research context—
MechanismEpitalon is the synthetic tetrapeptide Ala-Glu-Asp-Gly (AEDG), originally isolated from bovine pineal epithalamin. In vitro evidence indicates that Epitalon increases telomere length in human cell lines through upregulation of telomerase or activation of the alternative lengthening of telomeres (ALT) pathway. Separately, animal studies indicate that Epitalon activates telomerase and enhances bovine oocyte maturation and post-thawed embryo development in vitro. In vitro evidence also indicates that Epitalon exhibits antioxidant activity and improves delayed wound healing in high-glucose-injured human retinal pigment epithelial cells, with antioxidant effects comparable to those of melatonin. Animal studies indicate that Epitalon protects post-ovulatory mouse oocytes from aging-related damage in vitro at 0.1 mM concentration, again with antioxidant mechanisms proposed. At the epigenetic level, mechanistic data point to Epitalon and related peptide bioregulators modifying chromatin condensation in lymphocytes from elderly individuals, reactivating repressed chromatin and deheterochromatinizing nucleolar organizer regions in cells from donors aged 75–88 years [src:be0b2b95-d849-47b9-ad82-945f79489992; src:8827b5d6-0ba0-4255-9b39-0b4cc140de51]. Preliminary in vitro evidence also suggests that Epitalon stimulates gene expression and protein synthesis during neurogenesis in human mesenchymal stem cells, potentially through epigenetic mechanisms. Animal studies indicate that Epitalon increases mitochondrial staining (MitoTracker Red) approximately 1.5-fold in human pineal gland cells during senescence in vitro, suggesting effects on mitochondrial biogenesis or membrane potential. In vitro evidence additionally indicates that Epitalon modulates monocyte and macrophage proliferative activity and inflammatory pathways in the THP-1 cell line. In rat models, animal studies indicate that Epitalon decreases cathepsin B and D activity in liver and kidney lysosomes, reduces pancreatic amylase activity under various lighting conditions, modulates thyroid gland function and thyrotropic activity of the hypophysis, and stimulates proliferative activity in hypothalamic preoptic area explants at 2 ng/ml. Animal studies further indicate that Epitalon may provide renoprotective effects against rhabdomyolysis-induced kidney injury by reducing oxidative stress and energetic imbalance. Expert commentary suggests that Epitalon and Vilon regulate CCL11 (eotaxin) and HMGB1 (alarmin) gene expression, which are proposed molecular markers of aging. All mechanisms described above derive from Tier 3 (animal or in vitro) sources; direct evidence linking these mechanisms to human physiology has not been established.—
Evidence strengthanimalanecdotal
Primary goallongevity—

Frequently asked questions

What is Epitalon?
Epitalon (also written Epithalon) is a synthetic tetrapeptide with the sequence Ala-Glu-Asp-Gly (AEDG), originally derived from the pineal gland peptide epithalamin. It is not FDA-approved and is classified as a research compound. No controlled human clinical trials have established its safety or efficacy.
How does Epitalon work?
In vitro evidence indicates that Epitalon increases telomere length in human cell lines through upregulation of telomerase or activation of the alternative lengthening of telomeres (ALT) pathway. Animal studies also indicate effects on antioxidant defense, circadian melatonin rhythms, and epigenetic changes. These findings come from in vitro and animal models — human validation is absent.
What is Epitalon used for?
Epitalon has been investigated in vitro and in animal models for potential roles in telomere biology, antioxidant defense, circadian rhythm modulation, and epigenetic regulation. No controlled human clinical trials have established efficacy or safety for any indication.
Is Epitalon FDA-approved?
No. Epitalon is not FDA-approved for any indication. The absence of controlled human trial data means its safety and efficacy cannot be established from available evidence.
What are common dosages of Epitalon?
No validated human dosing data exist for Epitalon. No approved or consensus dose from human clinical studies is documented in the research literature.
How is Epitalon administered?
No validated route of administration has been established for Epitalon in human clinical research. The research packet documents insufficient evidence to identify a confirmed route based on human trial data.
What are common side effects of Epitalon?
No controlled human clinical trial data exist to characterize Epitalon's side-effect profile. The absence of human safety data means no conclusions about side effects can be drawn.
Are there safety concerns with Epitalon?
No formal contraindications from human studies have been identified. The absence of human safety data precludes definitive statements about safety in any specific population — including pregnancy, lactation, renal impairment, and hepatic impairment.
Is Epitalon related to the pineal gland?
Epitalon is derived from epithalamin, a peptide complex isolated from the bovine pineal gland. Its sequence (AEDG) represents a purified synthetic version of this naturally occurring compound. The pineal gland connection reflects its origin, not a validated therapeutic mechanism in humans.
Can Epitalon be combined with other compounds?
No evidence-supported combination protocols have been established for Epitalon. The current source literature does not document any stacking combinations with human-validated data.
Is Epitalon legal?
Epitalon is not FDA-approved and is not a scheduled controlled substance in the United States. Its legal status for possession and importation varies by country. This is not legal advice.
What does the research on Epitalon show overall?
Epitalon's research base consists of in vitro cell-line studies and animal experiments exploring telomerase activation, antioxidant defense, and circadian biology. No controlled human clinical trials have been conducted, making it premature to draw conclusions about efficacy or safety in humans.

References

  1. [1]

    Overview of Epitalon-Highly Bioactive Pineal Tetrapeptide with Promising Properties.

    Araj Szymon Kamil, Brzezik Jakub, Mądra-Gackowska Katarzyna et al.

    International journal of molecular sciences · 2025 · PMID 40141333

  2. [2]

    Therapeutic peptides in gerontology: mechanisms and applications for healthy aging.

    Mavrych Volodymyr, Shypilova Inna, Bolgova Olena

    Frontiers in aging · 2026 · PMID 42021992

  3. [3]

    Epitalon increases telomere length in human cell lines through telomerase upregulation or ALT activity.

    Al-Dulaimi Sarah, Thomas Ross, Matta Sheila et al.

    Biogerontology · 2025 · PMID 40908429

  4. [4]

    Epitalon-activated telomerase enhance bovine oocyte maturation rate and post-thawed embryo development.

    Ullah Safeer, Haider Zaheer, Perera Chalani Dilshani et al.

    Life sciences · 2025 · PMID 39788414

  5. [5]

    [Normalizing effect of the pineal gland peptides on the daily melatonin rhythm in old monkeys and elderly people].

    Korkushko O V, Lapin B A, Goncharova N D et al.

    Advances in gerontology = Uspekhi gerontologii · 2007 · PMID 17969590

  6. [6]

    [Effect of preparations melatonin and epitalon on the age-related dynamics of thyrotrophic activity of the hypophysis and thyroid gland function in different light regimes].

    Vinogradova I A

    Advances in gerontology = Uspekhi gerontologii · 2009 · PMID 20405731

  7. [7]

    Effect of epitalon on the lifespan increase in Drosophila melanogaster.

    Khavinson V K, Izmaylov D M, Obukhova L K et al.

    Mechanisms of ageing and development · 2000 · PMID 11087911

  8. [8]

    [Effect of epitalon and melatonin on life span and spontaneous carcinogenesis in senescence accelerated mice (SAM)].

    Anisimov V N, Popovich I G, Zabezhinskij M A et al.

    Voprosy onkologii · 2005 · PMID 15909815

  9. [9]

    Stressors and antistressors: how do they influence life span in HER-2/neu transgenic mice?

    Semenchenko Ganna V, Anisimov Vladimir N, Yashin Anatoli I

    Experimental gerontology · 2004 · PMID 15501020

  10. [10]

    The Antioxidant Tetrapeptide Epitalon Enhances Delayed Wound Healing in an in Vitro Model of Diabetic Retinopathy.

    Gatta Marco, Dovizio Melania, Milillo Cristina et al.

    Stem cell reviews and reports · 2025 · PMID 40493162

  11. [11]

    Epitalon protects against post-ovulatory aging-related damage of mouse oocytes in vitro.

    Yue Xue, Liu Sai-Li, Guo Jia-Ni et al.

    Aging · 2022 · PMID 35413689

  12. [12]

    [Age-related changes of exercise capacity and some biochemical indices of rat muscles under influence of different light conditions and pineal preparations].

    Vingradova I A, Iliukha V A, Fedorova A S et al.

    Advances in gerontology = Uspekhi gerontologii · 2007 · PMID 17969589

  13. [13]

    [Comparative study of the effects of melatonin and epitalon on the protracted memory under the shuttle labyrinth test conditions in rats in the course of aging].

    Vinogradova I A

    Eksperimental'naia i klinicheskaia farmakologiia · 2006 · PMID 17209456

  14. [14]

    Anti-aging peptide bioregulators induce reactivation of chromatin.

    Lezhava T, Monaselidze J, Kadotani T et al.

    Georgian medical news · 2006 · PMID 16705247

  15. [15]

    EPIGENETIC MODIFICATION UNDER THE INFLUENCE OF PEPTIDE BIOREGULATORS ON THE 'OLD' CHROMATIN.

    Lezhava T, Jokhadze T, Monaselidze J et al.

    Georgian medical news · 2023 · PMID 37042594

  16. [16]

    AEDG Peptide (Epitalon) Stimulates Gene Expression and Protein Synthesis during Neurogenesis: Possible Epigenetic Mechanism.

    Khavinson Vladimir, Diomede Francesca, Mironova Ekaterina et al.

    Molecules (Basel, Switzerland) · 2020 · PMID 32019204

  17. [17]

    [The influence of AEDG and KE peptides on mitochondries stain and L7A ribosomes protein expression during human pineal gland and thymus cell senescence in vitro.]

    Ivko O M, Drobintseva A O, Leont'eva D O et al.

    Advances in gerontology = Uspekhi gerontologii · 2020 · PMID 33342107

  18. [18]

    Peptides Regulating Proliferative Activity and Inflammatory Pathways in the Monocyte/Macrophage THP-1 Cell Line.

    Avolio Francesco, Martinotti Stefano, Khavinson Vladimir Kh et al.

    International journal of molecular sciences · 2022 · PMID 35408963

  19. [19]

    [Effect of age, different light conditions, melatonin, and epitalon on lysosomal proteinase activity in the liver and kidneys of rats].

    Rendakov N L, Tiutiunnik N N, Vinogradova I A

    Advances in gerontology = Uspekhi gerontologii · 2006 · PMID 17152724

  20. [20]

    [Influence of light regimens, melatonin, and epitalon on amylase activity in the pancreas and small intestine in rats of different age].

    Svechkina E B, Tiutiunnik N N, Vinogradova I A

    Advances in gerontology = Uspekhi gerontologii · 2006 · PMID 17152723

  21. [21]

    [The effect of pineal peptide preparations on proliferative activity in organotypic culture of the preoptic hypothalamus area].

    Miliutina Iu P, Kozina L S, Arutiunian A V et al.

    Advances in gerontology = Uspekhi gerontologii · 2007 · PMID 18383712

  22. [22]

    [Main mechanisms of rhabdomyolysis-caused kidney injury and their correction by organospecific peptides].

    Zamorskij I I, Shchudrova T S

    Biofizika · 2014 · PMID 25730989

  23. [23]

    [Peptides and CCL11 and HMGB1 as molecular markers of aging: literature review and own data].

    Khavinson V Kh, Kuznik B I, Tarnovskaia S I et al.

    Advances in gerontology = Uspekhi gerontologii · 2014 · PMID 25826983

  24. [?]

    Short Exogenous Peptides Regulate Expression of CLE, KNOX1, and GRF Family Genes in Nicotiana tabacum.

    Fedoreyeva L I, Dilovarova T A, Ashapkin V V et al.

    Biochemistry. Biokhimiia · 2017 · PMID 28371610

  25. [?]

    Melatonin and pineal gland peptides are able to correct the impairment of reproductive cycles in rats.

    Arutjunyan Alexander, Kozina Ljudmila, Milyutina Yulia et al.

    Current aging science · 2012 · PMID 23237594

  26. [?]

    [Characteristics of the pineal gland and thymus relationship in aging].

    Lin'kova N S, Poliakova V O, Kvetnoi I M et al.

    Advances in gerontology = Uspekhi gerontologii · 2011 · PMID 21809618

  27. [?]

    [Influence of peptides from pineal gland on thymus function at aging].

    Lin'kova N S, Poliakova V O, Trofimov A V et al.

    Advances in gerontology = Uspekhi gerontologii · 2010 · PMID 21510076

  28. [?]

    Pineal peptides restore the age-related disturbances in hormonal functions of the pineal gland and the pancreas.

    Goncharova N D, Vengerin A A, Khavinson V Kh et al.

    Experimental gerontology · 2005 · PMID 15664732

  29. [?]

    [Effect of epitalon on the immunity and hemostasis in hypophysectomized chicken and old hens].

    Kuznik B I, Pateiuk A V, Khavinson V Kh et al.

    Advances in gerontology = Uspekhi gerontologii · 2004 · PMID 15490730