Epithalon (Epitalon) is a synthetic tetrapeptide — just 4 amino acids (Ala-Glu-Asp-Gly) — with the most compelling human evidence for telomere extension of any compound in current research. Its dosing protocol is distinct from most other peptides: short-course, twice-yearly cycles.
How Epithalon Works
Epithalon activates telomerase — the enzyme that adds telomere repeat sequences to chromosome ends. Vladimir Khavinson's research team in St. Petersburg demonstrated in a series of human studies that 10mg/day courses produced measurable telomere lengthening and improvements in cellular aging markers.
The mechanism is via transcriptional activation of the TERT (telomerase reverse transcriptase) gene and upregulation of telomere-protective proteins.
Standard Dosing Protocol
Based on Khavinson's human research:
- Dose: 10mg per day
- Duration: 10-20 consecutive days per course
- Frequency: 1-2 courses per year (some protocols use 2 per year — spring and fall)
- Route: SubQ injection (preferred) or IM injection
Lower-dose oral/sublingual protocols (also studied):
- 20-30mg sublingual or oral daily for 10-day courses
- Less established bioavailability data than injectable
- Some peptide bioregulator practitioners use this approach for convenience
Administration Routes Compared
SubQ injection: Most bioavailable route. Inject into belly fat or thigh. 10mg in 1-2mL BAC water per injection.
IM injection: Faster absorption, can be used for the same dose. Deltoid or vastus lateralis.
Sublingual: Place drops under the tongue for 60-90 seconds before swallowing. Bioavailability is higher than oral swallowing but lower than injection.
Intranasal: Some sources report intranasal delivery of 5-10mg per day. Limited data on bioavailability vs injection.
Oral capsule: Lowest bioavailability but used in some Khavinson-affiliated product formulations (Epithalamin). Higher doses (30-40mg/day) may compensate.
What to Expect
Epithalon effects are subtle and cumulative. You will not notice acute effects like you would from BPC-157 or ipamorelin.
Short term (during course): Improved sleep quality is the most commonly reported effect. Some report vivid dreams, which may relate to the pineal gland effects of epithalon.
Long term (months to years): The intended benefits — telomere lengthening, cellular age reduction, immune function improvement — are slow-acting and measurable primarily through biomarkers rather than felt acutely.
Khavinson's own trials measured outcomes over 1-5 years of repeated courses.
Key Takeaways
Epithalon is dosed in short intensive courses (10-20 days) rather than continuously. The most evidence-backed protocol is 10mg/day SubQ for 10-20 days, 1-2 times per year. Improved sleep is often the first noticed effect; cellular anti-aging effects accumulate over months to years of repeated courses.