Overview
Overview
Epitalon (Epithalon) dosage protocols center on this synthetic tetrapeptide (Ala-Glu-Asp-Gly) developed from pineal gland research for its geroprotective potential[1]. Epitalon activates telomerase to promote telomere elongation, supports healthy melatonin production for improved sleep and circadian rhythm regulation, and has demonstrated lifespan extension in animal models[2][3]. Human studies suggest potential benefits for longevity, cardiovascular health, and physiological function in older a
- Category
- Longevity
- Routes
- subcutaneous
Mechanism
Epitalon (Epithalon)
Mechanism of action
Mechanism of action
In plain terms, epitalon is studied because it may help cells keep their DNA caps longer and may help reset the body clock. Those are two separate ideas, and they have different levels of proof. The first idea is telomeres. Every time a cell divides, the telomere caps on its DNA get a little shorter. An enzyme called telomerase can add length back, but most adult cells keep telomerase switched off. In lab dishes using human cells, epitalon increased telomerase activity and let cells divide more times than usual (Khavinson et al., Bull Exp Biol Med, 2003). The second idea is the pineal gland, a small gland in the brain that releases melatonin and helps run your sleep-wake cycle. Epitalon was built from a pineal extract called epithalamin. The melatonin evidence is mixed: it improved melatonin rhythm in some animal and human extract studies, but at least one rat study found no melatonin effect from the synthetic peptide. The telomerase effect is mostly from cell and animal studies. There is no large, blinded human trial proving that injected synthetic epitalon lengthens telomeres or extends human lifespan.
Key research findings
- 01
Synthetic tetrapeptide (Ala-Glu-Asp-Gly, AEDG) developed as a short-peptide analog of the pineal extract epithalamin; studied as a pineal/neuroendocrine 'bioregulator' (in vitro and rodent models).
- 02
In vitro: reported induction of telomerase activity and extension of proliferative capacity in cultured human somatic cells (human fibroblast cell-culture studies, Khavinson and colleagues, early 2000s).
- 03
Animal models (mouse/rat): reported effects on melatonin rhythmicity, antioxidant markers, and lifespan/spontaneous tumor incidence; largely from a single research lineage.
- 04
Human data are limited to small/older observations from the originating group; no large independent randomized trials identified.
- 05
Evidence base is concentrated in one research group and partly published in Russian-language sources, limiting independent replication.
Primary source: Human extract program (strongest human signal): A long-running, non-blinded program in elderly subjects reported lower mortality with epithalamin, and lower still when combined with the thymic peptide thymalin (Khavinson, Neuroendocrinology Letters, 2003; Korkushko et al., Bull Exp Biol Med, 2006). A 12-year study reported 28% lower mortality and 2-fold lower cardiovascular mortality in treated elderly patients. Human melatonin rhythm (extract): Korkushko et al. (2004) reported improved circadian melatonin rhythm in elderly people given the pineal extract. Human cells, in vitro (synthetic epitalon): Khavinson et al. (2003) reported that epitalon raised telomerase activity and extended the dividing lifespan of human fibroblasts past the usual limit. A 2025 independent study in Biogerontology reported telomere lengthening in human cell lines, supporting the mechanism outside the original lab. Animal lifespan and tumor data (preclinical): Anisimov and colleagues reported extended lifespan and lower spontaneous tumor rates in mice. These are animal findings and do not prove a human anti-cancer benefit. Single human case report: A 2023 case report described one person who self-administered epitalon and showed improved telomere and biological-age markers. A single case cannot prove an effect. The honest summary
Pharmacokinetic profile
Single-dose plasma curve over 24h. Shaded band = commonly-cited therapeutic window. Illustrative only.
Researched Effects
Researched benefits
Areas of active research and investigation. Results may vary and are based on preclinical or early clinical data.
Supports telomere maintenance and cellular longevity through telomerase activation[2][9].
Restores healthy melatonin production and circadian rhythm regulation[3].
Extended lifespan and reduced tumor incidence observed in animal models[1].
Human trials showed improved cardiovascular outcomes and reduced mortality over 12-year follow-up[4].
Protocol Reference
Protocol reference
Commonly cited research range: 5–10 mg, daily_for_cycles.
Reference figures reported in the research literature — not a dosing recommendation. For interactive vial math and scheduling, see the Calculator and Schedule tabs.
Cited protocol & reconstitution guide
Source-backed reference fields by phase, including any volume fields authored in the cited guide.
Days 1–20 (Standard short cycle)
5 mg/day (evening, SubQ)
Days 1–10 (Condensed cycle)
10 mg/day (evening, SubQ)
| Phase | Reference amount | Units / volume |
|---|---|---|
| Days 1–20 (Standard short cycle) | 5 mg/day (evening, SubQ) | 50 units (0.50 mL) |
| Days 1–10 (Condensed cycle) | 10 mg/day (evening, SubQ) | 100 units (1.00 mL) |
Titration protocol
- Days 1–20 (Standard short cycle)Start5 mg/day (evening, SubQ)
Once daily in the evening. Rotate injection sites (abdomen or thigh) each day. On a 10 mg vial + 2.0 mL mix (5 mg/mL), 5 mg is a full 1.0 mL draw = 100 units on a U-100 syringe; prefer 1 mL / 100-unit syringes. Repeat the cycle 2–3 times per year, spaced 4–6 months apart.
- Days 1–10 (Condensed cycle)Maintenance10 mg/day (evening, SubQ)
Once daily in the evening. Rotate injection sites (abdomen or thigh) each day. On a 10 mg vial + 2.0 mL mix, a 10 mg dose is the whole vial — draw as 2 × 100 units (1.0 mL each). Repeat the cycle 2–3 times per year, spaced 4–6 months apart.
Storage & Handling
Storage requirements(typical for most peptides)
Can be stored for extended periods. Protect from moisture.
Store in refrigerator door. Never freeze after reconstitution.
Label vials with reconstitution date. Discard if cloudy.
Reconstitution steps
- 01🌡️Wipe both stoppers — swab the BAC water vial and the peptide vial tops with alcohol.
- 02🧴Draw 1 mL bacteriostatic water into a sterile syringe — this 10 mg vial yields 10 mg/mL.
- 03💉Add it slowly — aim the water down the inside wall of the vial; do not spray it onto the powder.
- 04💧Swirl, do not shake — gently roll or swirl until the powder fully dissolves; shaking can damage the peptide.
- 05🔄Check the liquid — it should look clear; if it stays cloudy or has floaters, do not use it.
- 06🏷️Refrigerate at 2–8 °C (35.6–46.4 °F), away from light, and use within about 1–2 weeks.
- 07❄️Important: This guide is for educational purposes only and is not medical advice. For research use only. Not for human consumption.
Additional storage notes
Store at −20 °C (−4 °F) for long-term; refrigerate at 2–8 °C (35.6–46.4 °F) for routine storage; minimize moisture exposure [6] .
Refrigerate at 2–8 °C (35.6–46.4 °F); use within 2–4 weeks and avoid freeze–thaw [7] .
Allow vials to reach room temperature before opening to reduce condensation uptake.
Clinical Evidence
Clinical evidence
Preclinical and small early studies report effects on telomerase activity, antioxidant status, and lifespan in model organisms.
Human extract program (strongest human signal): A long-running, non-blinded program in elderly subjects reported lower mortality with epithalamin, and lower still when combined with the thymic peptide thymalin (Khavinson, Neuroendocrinology Letters, 2003; Korkushko et al., Bull Exp Biol Med, 2006). A 12-year study reported 28% lower mortality and 2-fold lower cardiovascular mortality in treated elderly patients. Human melatonin rhythm (extract): Korkushko et al. (2004) reported improved circadian melatonin rhythm in elderly people given the pineal extract. Human cells, in vitro (synthetic epitalon): Khavinson et al. (2003) reported that epitalon raised telomerase activity and extended the dividing lifespan of human fibroblasts past the usual limit. A 2025 independent study in Biogerontology reported telomere lengthening in human cell lines, supporting the mechanism outside the original lab. Animal lifespan and tumor data (preclinical): Anisimov and colleagues reported extended lifespan and lower spontaneous tumor rates in mice. These are animal findings and do not prove a human anti-cancer benefit. Single human case report: A 2023 case report described one person who self-administered epitalon and showed improved telomere and biological-age markers. A single case cannot prove an effect. The honest summary
- 01Synthetic tetrapeptide (Ala-Glu-Asp-Gly, AEDG) developed as a short-peptide analog of the pineal extract epithalamin; studied as a pineal/neuroendocrine 'bioregulator' (in vitro and rodent models).
- 02In vitro: reported induction of telomerase activity and extension of proliferative capacity in cultured human somatic cells (human fibroblast cell-culture studies, Khavinson and colleagues, early 2000s).
- 03Animal models (mouse/rat): reported effects on melatonin rhythmicity, antioxidant markers, and lifespan/spontaneous tumor incidence; largely from a single research lineage.
- 04Human data are limited to small/older observations from the originating group; no large independent randomized trials identified.
- 05Evidence base is concentrated in one research group and partly published in Russian-language sources, limiting independent replication.
Evidence maturity varies by compound; much peptide research is preclinical (in vitro or animal-model). Where human data are limited, findings should be read as research observations, not clinical conclusions.
References
Literature references
Published research articles and sources related to Epitalon (Epithalon).
- 01Int J Mol Sci (MDPI) — Overview of Epitalon: Highly Bioactive Pineal Tetrapeptide with Promising Properties (2025) View Sourceet al. (2025)
- 02PMC/Biogerontology — Epitalon increases telomere length in human cell lines through telomerase upregulation View Source
- 03Neuroendocrinology Letters (PubMed) — Synthetic tetrapeptide Epitalon restores neuroendocrine regulation in senescent monkeys View Source
- 04Bull Exp Biol Med (PubMed) — Geroprotective effect of epithalamine in elderly with accelerated aging (12-year RCT) View Source
- 05Alzheimer’s Drug Discovery Foundation — Epithalamin/Epithalon Cognitive Vitality Report (mechanisms, dosing, safety) View Source
- 06JPT Peptide Technologies — Peptide Stability: How Long Do Peptides Last? (storage best practices) View Source
- 07Tydes Laboratory — Bacteriostatic Water and Peptide Reconstitution (28-day use guideline) View Source
- 08Johns Hopkins Arthritis Center — How to Give a Subcutaneous Injection (patient education guide) View Source
- 09Wikipedia — Epitalon (overview of Hayflick limit studies and telomerase activation) View Source
- 10CDC — Vaccine administration: subcutaneous route (angle/site; no aspiration) View Source
- 11Immunize.org (IAC) — How to Administer Subcutaneous Injections (CDC-backed guidelines) View Source
- 12NCBI Bookshelf — Best practices for injection (asepsis, preparation, and administration) View Source
- 13Subcutaneous Drug Injection Review (PMC) — Pharmacologic considerations of the subcutaneous route View Source
- 14Pure Lab Peptides — Epitalon (10 mg) product page (quality and batch documentation) View Source
Observed Effects
Observed effects in cited research
Reported observations
- Injection-site reactions: redness, soreness, or a small bump where the needle went in.
- Mild drowsiness, especially with evening dosing, since the peptide is tied to melatonin signaling.
- Occasional reports of headache or temporary changes in sleep as the cycle starts.
Research Considerations
Research considerations
Research Use Only - not for human or veterinary therapeutic use. Current evidence is limited to in vitro and/or animal-model research; human data are minimal or absent. Consult a licensed healthcare professional for any clinical decisions.
- Anyone who is pregnant or breastfeeding — there is no safety data for these groups.
- Anyone with an active cancer or a recent cancer history — telomerase activation is theoretical risk territory and has not been cleared as safe in people.
- Anyone on prescription medications without first talking to a qualified clinician, since interactions are not well studied.
- Anyone who cannot verify product quality with a current certificate of analysis (COA).
Factors noted in the research literature; not patient-specific medical advice.
Regulatory Status
Regulatory status
RUO
Comparisons
Comparisons
| Compound | Mechanism | Route | Status |
|---|---|---|---|
| Epitalon (Epithalon)this | A synthetic tetrapeptide (Ala-Glu-Asp-Gly) studied for activation of telomerase and modulation of pineal/melatonin and circadian pathways, of interest in geroprotection research. | subcutaneous | Investigational / RUO |
| FOXO4-DRI | A D-retro-inverso peptide designed to disrupt the FOXO4-p53 interaction in senescent cells, releasing p53 to selectively induce apoptosis of senescent cells (a senolytic mechanism). | subcutaneous | Investigational / RUO |
| Glutathione | An endogenous tripeptide (gamma-L-glutamyl-L-cysteinyl-glycine) functioning as a major intracellular antioxidant and redox buffer, supporting phase-II detoxification conjugation and neutralization of reactive oxygen species. | subcutaneous | Investigational / RUO |
| Livagen | A synthetic tetrapeptide bioregulator (Lys-Glu-Asp-Ala) studied for peptidase modulation and epigenetic/chromatin effects (e.g., heterochromatin decondensation) in aging cell models. | subcutaneous | Investigational / RUO |
| NAD+ | An essential coenzyme central to cellular energy metabolism (redox reactions) and mitochondrial function, and a substrate for sirtuins and PARPs in DNA-repair and signaling pathways. | subcutaneous | Investigational / RUO |
| GHK-Cu | Stimulates collagen and glycosaminoglycan synthesis, promotes angiogenesis, and acts as antioxidant and anti-inflammatory agent. | subcutaneous, topical | Investigational / RUO |
| GHRP-2 | A synthetic hexapeptide that activates the ghrelin/GHS receptor (GHS-R1a) to stimulate dose-dependent growth hormone release; it also mildly engages prolactin and cortisol pathways. | subcutaneous | Investigational / RUO |
Attributes shown for research comparison only; not a statement of efficacy or therapeutic equivalence.
FAQ
Frequently asked questions
Epitalon (also spelled epithalon, or AEDG) is a synthetic four-amino-acid peptide built from a pineal-gland extract. In research it is studied for aging, mainly for its effect on telomeres and the sleep-melatonin cycle. It is not FDA-approved and is sold for research use only.
In lab studies on human cells, epitalon raised telomerase activity and let cells divide more times than usual. In animals it has been linked to longer lifespan. The strongest human data come from the related pineal extract, not the synthetic peptide, and come from non-blinded studies, so the human picture is still limited.
Reported protocols are short and spaced out. A common pattern is about 5 mg per day by subcutaneous injection for 20 days, or 10 mg per day for 10 days, repeated two to three times a year. This describes what has been reported in research and community sources, not a personal recommendation.
A simple mix for a 10 mg vial is 2.0 mL of bacteriostatic water, which gives 5 mg/mL. On that mix, a 5 mg dose is 1.0 mL, or 100 units on a U-100 syringe. For a 50 mg vial, 5.0 mL of BAC water gives 10 mg/mL. Use the calculator for any other vial size.
Adding 5.0 mL of bacteriostatic water to a 50 mg vial gives a 10 mg/mL concentration. On that mix, a 5 mg dose is 0.5 mL (50 units) and a 10 mg dose is 1.0 mL (100 units). Swirl gently, do not shake, and refrigerate after mixing.
Most reported protocols use evening or bedtime dosing to line up with the natural melatonin rhythm. The common route is a subcutaneous injection into the fat under the skin, with sites like the abdomen or thigh rotated each day to avoid irritation.
Epitalon clears the bloodstream very quickly, on the order of minutes, which is typical for tiny peptides. Researchers think its effects last longer than its time in the blood because it may act on gene activity rather than staying in circulation. This is one reason short, repeated cycles are reported.
Reported observed effects are usually mild and injection-related, like redness or soreness at the site, and sometimes mild drowsiness with evening dosing. The larger concern is the unknowns: long-term human safety data are limited, and people with a cancer history are flagged as cautious cases because of the telomerase question.
No. As of June 2026, epitalon is not FDA-approved for any use and is not a dietary supplement. It is sold as a research-use-only chemical, which is not made or labeled for human use.
No. This is an educational research reference. It reports dosing context, reconstitution math, and evidence, but it is not a treatment plan. Talk to a qualified clinician about any personal health decision.
Research-use notice
Research Use Only. This educational content and calculation support is intended for private research documentation. It does not provide medical advice, human-use directions, or claims of safety or effectiveness.