peptide wiki

Epithalon

aka Epitalon (AEDG, synthetic analog of Epithalamin)

Immune Modulator

Mechanism

Epitalon is a synthetic tetrapeptide (Ala-Glu-Asp-Gly) developed by Khavinson as an analog of the bovine pineal extract Epithalamin. It is a research-only bioregulator — not FDA-approved — investigated for claimed telomerase activation and circadian/melatonin effects, with evidence limited primarily to Khavinson-group studies.

Identification

CAS number307297-39-8
Molecular formulaC14H22N4O9
SequenceAEDG
Typical dose5–10 mcg/day subcutaneous or intranasal, typically in cycles of 10–20 days; human clinical studies used 0.5 mg/day sublingually or 5 mcg parabulbarly
Half-life~30 minutes (estimated; formal pharmacokinetic data limited in published literature)

Vendors selling Epithalon

VendorSizePriceListed purityTrust
Glacier Aminos 10 mg $32.99 99
BioLongevity Labs 20 mg $94.97 96
Crush Research 50 mg $199.00 95
Orbitrex Peptides $39.99 95
Profound Aminos 10 mg $34.00 95
Ion Peptide $35.00 95
Licensed Peptides 10 mg $91.99 95
Licensed Peptides 50 mg $91.99 95
Peptide Tech 10 mg $32.99 94
Mile High Compounds 35 mg $89.99 94
Mile High Compounds 50 mg $89.99 94
Amino Club $29.99 93
Riptide Wellness $104.99 92
Hydro Research Peptides 10 mg $0.45 91
Skye Peptides 15 mg $59.00 90
Peptidology 60 mg $54.99 89
Peptidology 10 mg $54.99 89
Qihang Peptide 87
Peptidegurus 10 mg 84
Peptidegurus 20 mg 84
Peptidegurus 50 mg 84
Peptidegurus 20 mg 84
Ascension Peptides 10 mg $44.00 84
Reta Peptide 83
Reta Peptide 83
Cocer Peptides 10 mg $65.00 82
Cocer Peptides 50 mg $260.00 82
MedGe Peptides 50 mg $100.00 82
Blank Peptides 10 mg $40.00 81
OROS Research 10 mg 79
Crystal Peptides 10 mg $29.99 66
Crystal Peptides 50 mg $99.99 66
Crystal Peptides $74.00 66
Qing Li Peptide 63
Certified Peptides 50 mg $110.00 62
Certified Peptides 10 mg $54.00 62
Peptiatlas 51
MEI-PEPETIDE 10 mg $34.00 48
DongCheng Peptide 46
Mandy 10 mg $31.00 43
HongDa Peptide $43.00 43
zztai Peptide Ltd 43
MJT peptides 10 mg $35.00 39
Apollo Peptide Sciences 50 mg
NG Peptide 50 mg $75.00
AMC Essentials 40 mg $162.99
AMC Essentials 50 mg $109.99
AMC Essentials 40 mg $79.99
Amino Sequence 40 mg $95.00
Atomik Labz 50 mg $129.00
Atomik Labz 10 mg $35.00
Biotech Peptides 25 mg $94.00
Bulk Peptides 10 mg $150.00
Core Peptides 25 mg $90.00
Flawless Compounds
Genetic Peptide 10 mg $65.00
Genetic Peptide 100 mg $65.00
Kimera Chems $36.99
Lumi Peptides $95.00
Nextech Labs 10 mg $36.00
Oasis Labs 50 mg $123.00
Paramount Peptides 50 mg $100.00
Paramount Peptides 10 mg $45.00
Pepvida Labs 10 mg $30.00
Polaris Peptides 50 mg $125.00
Polaris Peptides 10 mg $35.00
Puratek Peptides 10 mg $26.95
Solution Peptides 50 mg $129.00
Solution Peptides 10 mg $35.00
Soma Peptides 10 mg $39.00
Soma Peptides 50 mg $39.00
Southern Aminos 10 mg $36.75
True Peptide 10 mg $32.00
Welli Labs $29.99
Welli Labs $89.99
Wellness Peptides 10 mg $80.00
Wellness Peptides 50 mg $80.00

Research

Therapeutic Peptides in Orthopaedics: Applications, Challenges, and Future Directions
Rahman OF, Lee SJ, Seeds WA. · Journal of the American Academy of Orthopaedic Surgeons. Global research & reviews (2026) · review

Therapeutic peptides are emerging as promising adjuncts in the management of orthopaedic injuries, grounded in their ability to modulate molecular signaling networks central to cellular medicine.

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Therapeutic peptides in gerontology: mechanisms and applications for healthy aging
Mavrych V, Shypilova I, Bolgova O. · Frontiers in aging (2026) · review

Background Peptide therapeutics represent an emerging frontier in gerontological medicine, targeting fundamental hallmarks of aging including metabolic dysfunction, telomere attrition, tissue repair impairment, and hormonal decline.

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Efficacy and Safety of Melatonin in Migraine Prophylaxis: A Systematic Review and Meta-Analysis of Randomized Controlled Trials
Abouelmagd ME, Aldemerdash MA, Khatatbeh AA, Osman ASA, Abbas A, Allam S, AlEdani EM, Aldemerdash A, Monteith TS. · Current pain and headache reports (2026) · meta-analysis

Background Migraine is a chronic, disabling brain disorder. Melatonin, a circadian regulator with anti-inflammatory and antinociceptive actions, has been proposed for migraine prevention. We evaluated the efficacy and safety of melatonin for prophylaxis.

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Overview of Epitalon-Highly Bioactive Pineal Tetrapeptide with Promising Properties
Araj SK, Brzezik J, Mądra-Gackowska K, Szeleszczuk Ł. · International journal of molecular sciences (2025) · review

Epitalon, also known as Epithalon or Epithalone, is a tetrapeptide, Ala-Glu-Asp-Gly (AEDG), which was synthesized based on the amino acids composition of Epithalamin, a bovine pineal gland extract, prior to its discovery in pineal gland polypeptide complex solution.

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Epitalon increases telomere length in human cell lines through telomerase upregulation or ALT activity
Al-Dulaimi S, Thomas R, Matta S, Roberts T. · Biogerontology (2025) ·

Epitalon, a naturally occurring tetrapeptide, is known for its anti-aging effects on mammalian cells. This happens through the induction of telomerase enzyme activity, resulting in the extension of telomere length. A strong link exists between telomere length and aging-related diseases.

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[Peptidergic regulation of expression of cellular aging marker proteins in buccal epithelium.]
Ivko OM, Trofimova SV, Trofimov AV, Sharkovich Z, Mogilev VA. · Advances in gerontology = Uspekhi gerontologii (2024) · review

The review presents the results of long-term research conducted by the staff of the Saint-Petersburg Institute of Bioregulation and Gerontology, dedicated to the study of the biological activity of peptide bioregulators at all levels of a living organism's organization.

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Biomedicines in Longevity and Aging the Quest to Resist Biological Decline
Palmer RD. · BioMedicine (2024) · review

Aging is considered part of the natural process of life, however in recent years medical literature has started to show that specific facets of aging are beginning to be understood and those factors may even be considered preventable with various measures.

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Effects of Geroprotectors on Age-Related Changes in Proteolytic Digestive Enzyme Activities at Different Lighting Conditions
Morozov AV, Khizhkin EA, Svechkina EB, Vinogradova IA, Ilyukha VA, Anisimov VN, Khavinson VKh. · Bulletin of experimental biology and medicine (2015) · animal

We studied the effect of melatonin and epithalon on age-related changes in proteolytic digestive enzyme activity in the pancreas and gastric mucosa of rats kept under different lighting conditions.

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[Functional regulation of genome with peptide bioregulators by hypertrophic cardiomyopathy (by patients and relatives)]
Dzhokhadze TA, Buadze TZh, Gaĭozishvili MN, Rogava MA, Lazhava TA. · Georgian medical news (2013) ·

In this paper, a comparative study of the functional genome indicators using lymphocyte cultures of patients with hypertrophic cardiomyopathy (HCM) and their first relatives. Studies conducted both in intact cultures and cultures exposed to the influence of peptide - bioregulators Epithalon, Vilon and Livagen.

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[Protective effect of melatonin and epithalon on hypothalamic regulation of reproduction in female rats in its premature aging model and on estrous cycles in senescent animals in various lighting regimes]
Korenevsky AV, Milyutina YP, Bukalyov AV, Baranova YP, Vinogradova IA, Arutjunyan AV. · Advances in gerontology = Uspekhi gerontologii (2013) · animal

Potential neuroprotective effects of the pineal gland hormone melatonin and peptide preparation epitalon on estrous cycles and the central regulation of reproduction in female rats exposed to unfavourable environmental factors have been studied.

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Penetration of short fluorescence-labeled peptides into the nucleus in HeLa cells and in vitro specific interaction of the peptides with deoxyribooligonucleotides and DNA
Fedoreyeva LI, Kireev II, Khavinson VKh, Vanyushin BF. · Biochemistry. Biokhimiia (2011) ·

Marked fluorescence in cytoplasm, nucleus, and nucleolus was observed in HeLa cells after incubation with each of several fluorescein isothiocyanate-labeled peptides (epithalon, Ala-Glu-Asp-Gly; pinealon, Glu-Asp-Arg; testagen, Lys-Glu-Asp-Gly).

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[The influence of melatonin and epithalon on blood leukocyte count and leukocyte alkaline phosphatase in rats under different lighting conditions during ontogenesis]
Uzenbaeva LB, Vinogradova IA, Golubeva AG, Niuppieva MG, Iliukha VA. · Advances in gerontology = Uspekhi gerontologii (2008) · animal

The effect of pineal body hormone melatonin and synthetic tetrapeptide epithalon (Ala-Glu-Asp-Gly) under different light conditions on leucocytes differential count in rats were investigated.

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