Epithalon

Epithalon is a synthetic tetrapeptide (Ala-Glu-Asp-Gly) originally isolated from a pineal gland extract called epithalamin. It is studied for its role in telomere maintenance, melatonin restoration, and circadian rhythm regulation.

Epithalon binds to regulatory regions associated with the telomerase gene complex, supporting the transcription of telomerase reverse transcriptase (TERT). In human cell studies, this has been associated with telomere lengthening that exceeds the typical Hayflick replication limit.

This is one of the most consistently reported effects. Epithalon has been shown to help restore age-related decline in pineal melatonin secretion, and most users report deeper, more continuous sleep within the first week of a cycle.

The most common protocol is a 10-day cycle, often repeated 1–2 times per year. Some longevity protocols extend this to 20 days. Epithalon is not designed for indefinite daily use the way NAD+ or NMN supplements are.

Epithalon is given as a small subcutaneous injection (typically into the abdomen) using an insulin-style syringe. We provide step-by-step guidance, and the dose volume is small enough that most users find injections nearly painless.

The 10 mg/mL × 5 mL vial (50 mg total) is the standard strength used in most longevity protocols and gives you a complete cycle in one vial. The 2 mg/mL × 5 mL vial (10 mg total) is a lower-dose option for sensitive users or anyone preferring to start slowly. Your clinician will recommend the right strength based on your goals.

Most users report improvements in sleep quality within 3–7 days. Subjective improvements in energy, recovery, and skin tend to appear in the second half of a cycle and continue for weeks or months afterward.

Epithalon has been studied across multiple long-term human cohorts and has an unusually clean safety profile, with side effects in trials being rare and mild (typically minor injection-site irritation). It is not a stimulant and does not produce daily peaks or troughs.

Epithalon is not FDA-approved as a finished pharmaceutical product. It is prescribed and dispensed by licensed compounding pharmacies after a clinical evaluation by one of our partner clinicians.

Epithalon is not appropriate for anyone who is pregnant, breastfeeding, has an active malignancy, or has a known hypersensitivity to peptide therapies. Disclose your full medical history during your screening.

Significant drug interactions have not been reported in the published literature, but you should always disclose every medication and supplement you take during your clinical screening so your provider can review.

Refrigerate the reconstituted vial at 2–8°C (36–46°F). Once reconstituted, use within 30 days. Keep out of direct light. Do not freeze.

Epithalon is designed to be cycled, not run continuously. Most of its reported effects — particularly on sleep, recovery, and skin — persist for weeks to months after a cycle ends, which is why most users only run 1–2 cycles per year.

NAD+ and NMN support cellular energy metabolism and are taken daily, ongoing. Epithalon works on a different axis — telomere maintenance and pineal/melatonin signaling — and is run in short cycles. The two are commonly stacked for that reason.