Epitalon: research protocol, dosing & reconstitution
Also known as: Epithalon, AEDG peptide, Ala-Glu-Asp-Gly
Quick answer
What is Epitalon?
Epitalon is a four-amino-acid peptide based on an extract of the pineal gland. It is studied for its effect on telomerase — the enzyme that rebuilds the protective caps on the ends of chromosomes, which shorten each time a cell divides. Nearly all of its evidence is from cell cultures and Russian animal work, not human trials.
What Epitalon is
Epitalon (also written Epithalon) is the sequence Ala-Glu-Asp-Gly — four amino acidsAmino acidThe chemical building block of peptides and proteins. Peptides are short chains of amino acids linked together by peptide bonds.See glossary →, making it one of the shortest peptides in research use. It was developed in Russia by Vladimir Khavinson as a synthetic stand-in for epithalamin, a natural extract of the pineal gland, the small structure in the brain that governs sleep-wake rhythm.
Research vialsVialThe small sealed glass container peptides are supplied in, topped with a rubber septum that a syringe needle can pass through.See glossary → are typically 10 mg or 50 mg of lyophilizedLyophilizedFreeze-dried. Peptides are shipped as a lyophilized powder ('puck') because the dry form is far more stable than a solution. It must be reconstituted before use in research.See glossary → powder. Protocols in the literature describe short courses rather than continuous use.
Mechanism of action
The central claim is telomerase activation. Telomeres are repeating DNA sequences that cap each chromosome and shorten with every cell division; when they get too short the cell stops dividing. A 2025 study reported that Epitalon lengthened telomeres in human cell lines, either by upregulating telomerase or through an alternative lengthening pathway [1].
A 2025 review summarises the wider claims — antioxidant activity, effects on melatonin rhythm, and gene-expression changes — while noting that the strongest evidence remains preclinical [2]. There are no large randomised human trials, and that gap is the most important fact about this compound.
What researchers study Epitalon for
- Telomere and telomerase biology
- Cellular-aging and senescence models
- Pineal function and circadian-rhythm research
- Antioxidant and oxidative-stress studies
What dose of Epitalon do researchers use?
Research literature commonly references doses of 5–10 mg daily in short courses of 10–20 days (literature-referenced). This is not a recommendation — the table below summarizes protocols as they appear in published literature and trial designs.
| Context | Dose | Frequency | Duration |
|---|---|---|---|
| Short-course reference (literature) | 5–10 mg | Once daily | 10–20 day course |
| Repeat-course pattern referenced | 5–10 mg | Once daily during the course | Courses repeated 1–3× per year |
← Swipe to see the full table
Half-life and dosing timing
Half-life: Short; not well characterised in humans. Route referenced in research: Subcutaneous or intranasal (research). Half-lifeHalf-lifeHow long it takes for half of a compound to be eliminated from the body. Half-life determines how often researchers dose a compound in protocols.See glossary → is short and poorly characterised in humans, so protocols reference once-daily dosing through a defined course rather than continuous administration. The course-then-break pattern comes from the original Russian research design, not from pharmacokinetic data.
Titration: start low, go slow
There is no established titrationTitrationStarting at a low dose and increasing gradually on a schedule. Research protocols titrate to assess tolerance — 'start low, go slow.'See glossary → schedule. Literature-referenced protocols simply run the course dose from day one, which is itself a reflection of how little dose-ranging work exists.
Skip the Epitalon math
Enter vial size, water volume, and target dose — the free calculator returns concentration, injection volume, and exact U-100 syringe units.
How is Epitalon reconstituted?
| Vial size | BAC water | Concentration | Worked example |
|---|---|---|---|
| 10 mg | 2 mL | 5 mg/mL | 5 mg = 1 mL = 100 units on a U-100 syringe |
| 50 mg | 5 mL | 10 mg/mL | 10 mg = 1 mL = 100 units on a U-100 syringe |
Add 2 mL of bacteriostatic waterBAC water (bacteriostatic water)Sterile water containing 0.9% benzyl alcohol, which suppresses bacterial growth. It is the standard diluent used to reconstitute lyophilized peptides for multi-dose research vials.See glossary → to a 10 mg vial: 10 ÷ 2 = 5 mg/mL. A 5 mg dose is 5 ÷ 5 = 1 mL — a full 100 units on a U-100 syringeU-100 syringeAn insulin syringe calibrated so that 100 units equal 1 mL. The standard syringe referenced in peptide research; each unit equals 0.01 mL.See glossary →. Because the referenced doses are large relative to the vial, Epitalon often uses the whole syringe rather than a small fraction of it.
New to the process? Read the full step-by-step reconstitution guide.
How long does reconstituted Epitalon last?
Lyophilized: refrigerate; stable for many months. ReconstitutedReconstitutionThe process of mixing a freeze-dried (lyophilized) peptide powder with bacteriostatic water to create a solution of known concentration.See glossary →: refrigerate at 2–8°C and use within weeks. Standard dark, cold handling applies.
What is Epitalon stacked with in research?
Referenced with GHK-Cu in anti-aging research protocols — the two work on different levels, Epitalon on gene expression and telomere biology, GHK-Cu on skin remodelling and copper delivery.
Side effects observed in research
Reported effects are minimal — mostly injection-site irritation. That should be read carefully: an absence of reported effects in a compound with almost no human trial data is not the same as a demonstrated safety record.
- Injection-site irritation
- Few effects reported; long-term human data is absent
Frequently asked questions
Does Epitalon actually lengthen telomeres?
Cell-line research reports telomere lengthening via telomerase upregulation. That is a laboratory finding in cultured cells — it has not been demonstrated to extend human lifespan or healthspan, and no large human trials exist.
What dose of Epitalon do research protocols reference?
Typically 5–10 mg daily across a 10–20 day course, with courses repeated a few times a year. This describes published protocol patterns, not a recommendation.
Why is Epitalon dosed in short courses instead of daily?
The course-and-break pattern comes from the original Russian study designs. It is a convention of that research rather than a conclusion drawn from pharmacokinetic data.
How strong is the evidence for Epitalon?
Weak by clinical standards. The work is largely preclinical — cell cultures and animal models — and concentrated in Russian literature with limited independent replication.
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