Epithalon (also spelled Epitalon) is a synthetic tetrapeptide (Ala-Glu-Asp-Gly) developed by Professor Vladimir Khavinson at the St. Petersburg Institute of Bioregulation and Gerontology. It is a Khavinson bioregulator, a class of short peptides that regulate gene expression in specific tissues at very low concentrations. Epithalon targets the pineal gland and activates telomerase, the enzyme responsible for maintaining telomere length on chromosomal ends. Telomere shortening is one of the primary hallmarks of cellular aging. Epithalon is the synthetic analog of Epithalamin, a peptide extract originally derived from bovine pineal gland. It is administered in short, intensive courses (10-20 days) rather than continuously, consistent with Khavinson's bioregulatory dosing philosophy.
Quick Start
Route
SubQ injection
Start low
5 mg SubQ
Frequency
10-20 day course, 2-3x per year
Timing
No evidence-based fed or fasted requirement. Evening dosing sometimes preferred for pineal/melatonin alignment.
Start here. Every protocol below is ordered lowest-first. Begin at the smallest effective dose, hold about a week to assess tolerance, and step up only if needed.
Tiered Protocols · lowest first
Conservative start
5 mg daily · SubQ injection · 10-20 day course, 2-3x per year
conservative starter
5 mg daily
10-20 day course, 2-3x per year
Intermediate
Longevity Reset Protocol
10 mg · SubQ · Daily
in vitro · Khavinson, Bondarev & Butyugov 2003 (Bulletin of Experimental Biology and Medicine, 135(6):590-592)
Often run 1-2 times per year. Total cycle dose is 100mg. (Alternative protocol: 5mg daily for 20 days). Human use has been published, but almost entirely by a single research group in Russian-language journals. None of it is registered on any trial registry and most reports were unblinded, so this evidence is far weaker than a controlled trial.
10 mg
Daily
Reconstitution CalculatorU-100
050100u
Draw to
— units
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01
How it works
Epithalon activates the catalytic subunit of telomerase (hTERT) in somatic cells, enabling the enzyme to add telomeric repeats (TTAGGG) to chromosomal ends. This counteracts the progressive telomere shortening that occurs with each cell division and is one of the recognized hallmarks of aging. Epithalon also normalizes pineal gland function, restoring melatonin production patterns that decline with age. Melatonin itself has antioxidant and immunomodulatory properties. As a Khavinson bioregulator, Epithalon works through gene expression regulation at very low concentrations, interacting with DNA at the level of histone modification and transcription factor accessibility rather than through traditional receptor binding. This mechanism explains why bioregulators are administered in short intensive courses followed by extended rest periods.
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What to expect
Early
Days 1–7
Days 1-10 (during course): Sleep quality improvements may be noticeable (pineal/melatonin normalization). Gene expression changes are initiated but not yet manifested clinically. Course is only 10-20 days.
Mid
Weeks 2–4
Weeks 2-12 (after course): Gene expression changes continue to manifest. Telomerase activation effects persist beyond the dosing period. Sleep improvements may sustain.
Later
Weeks 4–12
Months 3-12: Cumulative effects across multiple courses. Telomere length measurements (if tracked) may show stabilization or modest lengthening over time. Best assessed through longitudinal biomarker tracking.
03
Evidence
HumanModerate
AnimalModerate
In-vitroPresent
Each reference below was re-fetched from its PubMed record, and the quoted sentence was
confirmed to appear in that abstract and to support the claim it sits under. Follow any of
them to read the source.
Epithalon induced telomerase activity and telomere elongation in telomerase-negative human fetal fibroblasts.
Addition of Epithalon peptide in telomerase-negative human fetal fibroblast culture induced expression of the catalytical subunit, enzymatic activity of telomerase, and telomere elongation, which can be due to reactivation of telomerase gene in somatic cells and indicates the possibility of prolonging life span of a cell population and of the whole organism.
Evidence scope. In vitro human fetal-fibroblast culture; not clinical dosing or longevity evidence.
Claims we could not support
No abstract we checked supports these for this molecule at this route. That is not the
same as saying they are false — it marks where the evidence is missing.
Dose/route: 5 mg SubQ daily for 10-20 days, 2-3x/year. No checked abstract administered this regimen.
Pineal/melatonin and epigenetic mechanisms. The checked abstract addressed telomerase only.
Primary safety and malignancy concern. No human SubQ abstract established tolerability or cancer risk.
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The honest take
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Telomerase activation
Supported
Confirmed in multiple cell culture studies showing hTERT activation and telomere elongation. The mechanism is well-supported. Whether this translates to meaningful anti-aging effects in humans requires long-term data.
Lifespan extension
Supported
Animal studies show approximately 25% lifespan increase in rodents. One of the few compounds with lifespan data. Not confirmed in humans.
Pineal / melatonin restoration
Animal data shows normalization of melatonin production in aged animals. Consistent with Khavinson's bioregulatory theory of organ-specific gene expression restoration.
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Interactions & stacking
Two different questions: what is documented about running these together, and what is documented about drawing them into the same syringe. A good pharmacological partner can still have to be pinned separately.
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Pin alone. Epithalon must not share a syringe with anything else, whatever the pharmacology says.
PIN ALONE. Khavinson bioregulators work through gene expression regulation at extremely low effective concentrations. Mixing with other peptides could interfere with the precise signaling mechanism.
Documented together
SS-31Epithalon targets telomere maintenance (cellular lifespan), SS-31 targets mitochondrial membrane integrity (cellular energy). Two fundamental hallmarks of aging addressed simultaneously. Pin separately.
PinealonBoth target pineal gland through different bioregulatory mechanisms. Can be run in sequence for extended pineal support.
Keep separate
GHK-CuCopper ions from GHK-Cu degrade Epithalon's peptide structure. Never mix in the same syringe. Separate injection sites recommended when dosed close in time.
Check any specific pair in the Stack & Interaction Checker, which answers both questions separately. Absence of a documented conflict is not evidence of safety.
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Side effects & safety
Commonly reported
Very well tolerated
Mild injection site irritation
No significant side effects reported in published literature
Less common & notes
Epithalon is a small tetrapeptide with a clean safety profile in published research.
The short course duration (10-20 days) limits cumulative exposure.
Theoretical concern about telomerase activation in cancer cells, though animal studies actually showed reduced tumor incidence.
Individuals with active malignancy should consult their oncologist before use.
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Pharmacokinetics
Illustrative plasma concentration · 2.3 h
Half-life
0.5h
Peak · Tmax
0.25h
Elimination
2.5h
Bioavailability
~100%
SubQ
Duration of action
Months (telomerase activation and pineal gene expression changes persist for months after a 10-20 day course)
Clearance
Rapid enzymatic degradation (peptidases); renal excretion of amino acid components
Storage. Store unreconstituted vials frozen (-20C) or refrigerated (2-8C). After reconstitution with BAC water, refrigerate at 2-8C. Stable for 28-30 days. Small tetrapeptide with favorable stability. Short 10-day course means reconstituted vial is typically used within 5-10 days, well within stability window.
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Regulatory status
Epithalon is not FDA-approved for any indication. Available as a research peptide. Used in Russian anti-aging medicine. WADA status: Not specifically listed. Not a controlled substance.
Put it to work
Calculate, log & track
Open Epithalon straight into OnePin with your vial and dose pre-filled, then let it handle the syringe math and remind you before the vial runs out.