Epithalon
Also known as Epitalon, Epithalone, Ala-Glu-Asp-Gly, AEDG peptide, Epithalamin analog
Epithalon is a four-amino-acid synthetic peptide from the Khavinson group designed to mimic epithalamin, a pineal gland extract. It is the best known longevity peptide, used for telomere support, sleep, and general anti-aging.
Overview
Epithalon is the tetrapeptide Ala-Glu-Asp-Gly, created at the St. Petersburg Institute of Bioregulation and Gerontology in the 1980s and 1990s as a synthetic replacement for epithalamin, a bovine pineal extract the group had studied for decades. It is the flagship of the bioregulator family and the one with the largest body of published work, most of it from Vladimir Khavinson and collaborators including the oncologist Vladimir Anisimov.
The headline finding is that Epithalon increased telomerase activity and lengthened telomeres in cultured human fibroblasts, published in 2003. In mice, long-term treatment was reported to extend lifespan in some strains, reduce spontaneous tumor incidence in others, and normalize circadian melatonin rhythms. In aged rhesus monkeys it restored nighttime melatonin peaks and improved glucose and cortisol patterns. These are real published results, but nearly all originate from one network of researchers and independent replication of the telomere claim is lacking.
Human evidence is mostly for epithalamin, the extract, including a 12-year Russian follow-up of elderly patients who received periodic courses and showed lower mortality and better cardiovascular and immune markers than controls. Smaller studies used Epithalon itself for sleep, retinal disease, and immune markers in older adults. None were large or blinded to modern standards. The peptide is generally well tolerated, and its wide use in the community rests on this combination of intriguing animal data and thin human trials.
How it works
Epithalon is proposed to act on gene expression, most notably by inducing transcription of telomerase reverse transcriptase (TERT) in somatic cells, which lengthens telomeres in culture. Whether that happens meaningfully in a living adult is unproven. It also acts on the pineal gland, increasing nighttime melatonin synthesis and restoring circadian amplitude in aged animals, which likely explains the sleep effects people report. Other reported actions include antioxidant effects, modulation of interferon gamma and other immune genes, reduced expression of some oncogenes in mouse tissue, and normalization of gonadotropin rhythms. Khavinson's model has the peptide binding DNA directly and altering chromatin accessibility, a hypothesis that remains largely untested outside his group.
What the research shows
- in vitroEpithalon induced telomerase activity and telomere elongation in cultured human somatic cells.
- rodentLong-term Epithalon treatment in female SHR mice reduced spontaneous tumor incidence and modestly extended lifespan in some cohorts.
- rodentEpithalon restored nighttime melatonin peaks and normalized cortisol and glucose rhythms in aged rhesus monkeys.
- human pilotA 12-year follow-up of elderly patients receiving periodic epithalamin extract reported lower mortality than untreated controls.
- human pilotSmall Russian studies with Epithalon in older adults reported improved sleep and immune markers.
Evidence labels: rodent and in vitro mean no human data for that finding. Human pilot means small, often uncontrolled. Human RCT means randomized and controlled. Clinical means an approved drug with regulatory data.
Dose calculator
U-100 insulin syringeUnits are a volume on the syringe, not an amount of peptide. Concentration changes every time you change the water volume. The standalone calculator explains the math.
Dosing and protocol
Daily for 10 to 20 days per course. Some people use a lower dose for a longer period, but the 5 to 10 mg short course is the pattern most often cited.
10-20 days per course, 1-2 courses per year
Evening or before bed, since it supports melatonin release. Morning use is also common and probably matters less than consistency.
| Vial | Suggested water | Concentration | Low dose draw |
|---|---|---|---|
| 10 mg | 1 mL | 10 mg/mL | 50 units |
| 20 mg | 2 mL | 10 mg/mL | 50 units |
| 50 mg | 3 mL | 16.667 mg/mL | 30 units |
Lyophilized: fridge or freezer, away from light. Reconstituted: fridge 2-8C, use within 4 weeks. Epithalon is relatively stable for a peptide.
Cautions
- ▲The telomere-lengthening result is a cell culture finding; no one has shown it happens in adult humans.
- ▲Telomerase activation is theoretically double-edged, since most cancers rely on it, though mouse data showed fewer tumors.
- ▲Human trials are small, mostly open-label, and largely of the extract rather than the peptide.
- ▲Vivid dreams and mild drowsiness are common; some report fatigue during a course.
- ▲Nearly all published work comes from one research network.
Commonly stacked with
Frequently asked
Does Epithalon actually lengthen telomeres?
In cultured human fibroblasts, yes, according to a 2003 study from the Khavinson group. In living people there is no direct evidence. The idea is plausible given the telomerase induction, but a cell dish is a long way from a human body and no one has measured telomere length before and after Epithalon courses in a controlled trial.
How much and how often?
The most commonly cited protocol is 5 to 10 mg daily by injection for 10 to 20 days, repeated once or twice a year. That mirrors the course structure used in the Russian elderly studies. Some people run lower daily doses for longer, which has no specific data behind it.
Is there a cancer risk from activating telomerase?
It is a fair concern in theory, since cancer cells depend on telomerase. The mouse lifespan studies actually found fewer spontaneous tumors with Epithalon, and no human signal has emerged, but the human data is too thin to rule anything out. Anyone with a cancer history should think carefully.
Does it help sleep?
Many users report deeper sleep and vivid dreams, consistent with the animal data showing restored melatonin rhythm. This is the most reproducible subjective effect. Evening dosing is common for that reason.
Oral, nasal, or injected?
Injection was used in the research and is the community standard. Oral and nasal products exist and short peptides may survive digestion better than long ones, but there is no human comparison of routes.
References
- Epithalon peptide induces telomerase activity and telomere elongation in human somatic cells. Bulletin of Experimental Biology and Medicine, 2003
- Effect of Epitalon on biomarkers of aging, life span and spontaneous tumor incidence in female Swiss-derived SHR mice. Biogerontology, 2003
- Synthetic tetrapeptide epitalon restores disturbed neuroendocrine regulation in senescent monkeys. Neuroendocrinology Letters, 2001
- Peptides of pineal gland and thymus prolong human life. Neuroendocrinology Letters, 2003