Epitalon, also written Epithalon, is a four-amino-acid research peptide studied in cell and animal models of ageing. Its sequence is Ala-Glu-Asp-Gly, often shortened to AEDG. This guide explains the main findings, what the experiments actually measured, and where UK researchers can find product information and analytical documentation.
Updated 11 October 2026. Primary research references are linked below.
What is Epitalon?
Epitalon is a synthetic tetrapeptide. Research has examined its relationship with telomerase, telomere maintenance and gene expression. The 2020 AEDG study identifies the same Ala-Glu-Asp-Gly sequence and investigates it in cultured human stem cells. A study using human-derived cells is still a laboratory experiment; it is not a clinical trial in people.
For a wider introduction to this class of compounds, see our peptide bioregulators research guide.
Epitalon and telomere research
The early cell-culture finding
In 2003, Khavinson and colleagues reported telomerase activity and longer telomeres after adding Epithalon to a culture of human fetal fibroblasts. This is an often-cited starting point for Epitalon research. It establishes a finding in that cell-culture system, rather than evidence that the peptide extends human lifespan. Read the original 2003 study.
A later study by UK-based researchers
A 2025 paper by Al-Dulaimi and colleagues, with researchers at Brunel University London and Royal Brompton Hospital, compared normal human epithelial and fibroblast cells with two breast-cancer cell lines. The reported route to telomere lengthening differed: telomerase activity increased in the normal cells, while alternative lengthening of telomeres (ALT) increased in the cancer cell lines. That distinction matters when interpreting the results. Read the 2025 paper.
The publisher issued a correction in November 2025 replacing incorrect versions of Figures 1–3. The article has been corrected; researchers should use that version when reviewing the results.
What did the animal studies find?
In a 2003 study of female Swiss-derived SHR mice, there were 54 animals in each group. The authors reported a higher maximum lifespan in the treated group, but mean lifespan did not change. Total spontaneous tumour incidence also did not change, although the study reported fewer cases of leukaemia. These are different outcomes and should not be reduced to a blanket claim that Epitalon extends life or prevents cancer. Read the mouse study.
Gene-expression research
A 2020 study investigated AEDG in human gingival mesenchymal stem cells. It reported changes in markers associated with neuronal differentiation and used molecular modelling to explore possible histone interactions. This provides another laboratory research direction; it does not demonstrate a treatment for neurological conditions. Read the gene-expression study.
How to interpret the evidence
- Check the model: distinguish a cell culture, an animal experiment and a clinical study.
- Check the endpoint: telomere length, enzyme activity, maximum lifespan and average lifespan answer different questions.
- Check the methods: compare cell type, exposure period, controls and measurement technique before treating two results as equivalent.
- Check the version: read any published correction alongside the original paper.
The papers discussed here do not establish an effective or safe regimen for human use. This guide covers research evidence, not dosage or administration instructions.
Reconstitution & Storage
Follow the product-specific preparation and storage information and your laboratory’s procedures. Diluent compatibility and stability after preparation vary by compound, formulation and handling conditions; do not assume a universal 28–30-day shelf life. If details are missing, contact us with the product and batch reference. See our Storage & Handling Guide.
Epitalon 10mg for UK laboratory research
Alpha Peptides® is based in the UK and delivers within the UK only. Our Epitalon 10mg research peptide page provides the product specification and current availability. Products are supplied for laboratory and in vitro research, not for human or veterinary use.
Before selecting research material, review the available analytical documentation and confirm which product or batch each report covers. A published research paper is not a test report for a supplier’s stock. Our guide to reading a Certificate of Analysis explains how to assess the information in a report.
Related reading: peptide purity explained, research-use-only information and the Longevity Research collection.
Primary research references
- Khavinson, Bondarev and Butyugov (2003). Epithalon peptide induces telomerase activity and telomere elongation in human somatic cells. Bulletin of Experimental Biology and Medicine.
- Al-Dulaimi and colleagues (2025). Epitalon increases telomere length in human cell lines through telomerase upregulation or ALT activity. Biogerontology. Read with the published figure correction.
- Anisimov and colleagues (2003). Mouse study of ageing biomarkers, lifespan and spontaneous tumour incidence. Biogerontology.
- Khavinson and colleagues (2020). AEDG research into gene expression and protein synthesis during neurogenesis. Molecules.
Disclaimer: All products sold by Alpha Peptides are intended strictly for in vitro research and laboratory use only. They are not approved for human or veterinary use, and this article does not constitute medical advice.