Epitalon (also spelled Epithalon) is a synthetic tetrapeptide — Ala-Glu-Asp-Gly — developed by Professor Vladimir Khavinson at the St. Petersburg Institute of Bioregulation and Gerontology. It is derived from the natural peptide Epithalamin, extracted from the pineal gland. Epitalon is the most studied peptide in the field of telomere biology, with decades of Russian research and a growing body of Western literature examining its role in ageing pathways.
What Is Epitalon?
Epitalon is a four-amino acid bioregulator peptide. Bioregulators — a concept developed extensively in Russian longevity research — are short peptides that act as tissue-specific signalling molecules, restoring the gene expression patterns of aged cells toward younger profiles. Epitalon's primary biological targets are the pineal gland (melatonin production) and telomerase activation.
Its sequence Ala-Glu-Asp-Gly is small enough to penetrate cell nuclei and interact directly with chromatin. Research suggests it upregulates the expression of telomerase reverse transcriptase (hTERT), the catalytic subunit of the telomerase enzyme responsible for maintaining telomere length during cell division.
Telomere Research: Why Telomere Length Matters
Telomeres are protective caps at the ends of chromosomes, analogous to the plastic tips of shoelaces. With each cell division, telomeres shorten slightly. When telomeres become critically short, cells enter replicative senescence — they stop dividing and begin secreting pro-inflammatory signals (the senescence-associated secretory phenotype, SASP). Telomere attrition is one of the nine hallmarks of aging identified in the Hallmarks of Aging framework.
Telomerase can extend telomeres, but most somatic cells express very little telomerase in adulthood. Research into compounds that upregulate telomerase expression in somatic cells is a major area of longevity science. In cell culture studies, Epitalon has been shown to activate telomerase and produce measurable telomere lengthening in human fetal cell lines — research that contributed to Khavinson's broader bioregulator hypothesis.
Melatonin Restoration and the Pineal Gland
The pineal gland's melatonin output declines with age, with peak production in childhood dropping to a fraction by age 60. This decline is implicated in disrupted circadian rhythms, reduced sleep quality, diminished antioxidant defence (melatonin is a potent free radical scavenger), and impaired immune regulation.
Epitalon has demonstrated the ability to restore melatonin synthesis in aged animals, normalising circadian rhythm amplitude. This effect appears to operate at the level of pinealocyte gene expression — Epitalon upregulates the enzymes in the melatonin synthesis pathway. This positions it uniquely in longevity research: it addresses both telomere biology and circadian/antioxidant pathways simultaneously.
Research Dosage Protocol
Standard research dosage: 5–10 mg per day via subcutaneous injection
Cycle structure: 10–20 day courses, 2–3 times per year — reflecting the original Russian clinical protocols
Half-life: Short (minutes to hours); daily injection during the course is standard
Administration: Subcutaneous injection after reconstitution with bacteriostatic water
For reconstitution calculations, use the BAC Water Calculator to determine concentration and IU draw from your vial size and BAC water volume.
Epitalon and SS-31: Complementary Longevity Research
Researchers studying ageing biology frequently examine Epitalon alongside SS-31 (Szeto-Schiller-31), the mitochondria-targeted peptide. These two compounds address complementary aspects of cellular ageing: Epitalon targets nuclear longevity pathways (telomeres, gene expression) while SS-31 targets mitochondrial dysfunction — considered a separate but interacting hallmark of ageing. Together they represent a broad-spectrum approach to cellular longevity research at both the nuclear and mitochondrial levels.
Where to Buy Epitalon in India
Peptide Central stocks Epitalon at 99% purity, HPLC-verified with COA included. Pan-India delivery with COD available. Being a tetrapeptide, Epitalon is stable and well-characterised — every batch is tested for sequence confirmation and purity before dispatch.
Frequently Asked Questions
How does Epitalon activate telomerase?
Research suggests Epitalon upregulates expression of hTERT (telomerase reverse transcriptase), the catalytic subunit of telomerase. It appears to interact with chromatin and transcription factor binding sites upstream of the hTERT gene, increasing its expression in cells that would otherwise express minimal telomerase.
What is the standard Epitalon research dosage?
The most commonly referenced research protocol uses 5–10 mg per day via subcutaneous injection, run as a 10–20 day course 2–3 times per year — matching the original Russian bioregulator protocols developed by Khavinson and colleagues.
How does Epitalon relate to melatonin supplementation?
Epitalon works upstream of melatonin — it restores the pineal gland's own capacity to synthesise melatonin by upregulating the enzymes in the synthesis pathway. This is distinct from supplementing melatonin directly, and represents a more upstream regulatory approach to circadian restoration.
Can Epitalon be combined with other longevity peptides?
Yes — Epitalon targets nuclear/epigenetic longevity pathways (telomeres, gene expression). Combining it with mitochondria-targeted compounds like SS-31 provides complementary coverage of two distinct hallmarks of ageing in the same research model.