Happy Tuesday!
The Epitalon Masterclass is out now on YouTube and Spotify.
I have been so excited to release this one, since Epitalon has been such a popular request lately.
Watch on YouTube: https://youtu.be/pnlqifpJ5SY
Listen on Spotify: https://open.spotify.com/episode/3A1iGI7hAiwJdI2TDNOXQw?si=FvjsEiHCTkK-aGfdtJhNog
The masterclass covered history, mechanisms, dosing, cycling, and stacking for almost an hour. Here is the short, written version.
History
Epitalon is a tetrapeptide. It’s four amino acids consisting of alanine, glutamic acid, aspartic acid, and glycine. You will see it written as AEDG, epithalon, or epithalone. Same thing.
It is tiny, around 390 Daltons.
The work goes back to Vladimir Khavinson in St. Petersburg in the 1970s. His premise was that each organ makes its own regulatory peptides, and production falls off with age.
Epithalamin is the crude extract from bovine pineal glands. Epitalon is the synthetic sequence built later to capture the active part. They aren't interchangeable, and the strongest human data comes from the extract. That matters for dosing.
Most peptides dock to a receptor on the outside of a cell and relay the message inward. Epitalon has no known receptor.
The best explanation we have is that it goes straight into the nucleus and binds your DNA and the spool proteins that wrap around it.
DNA wound tight cannot be read. Loosened up, it can. Epitalon appears to loosen the winding in specific spots, turning genes back on that went quiet with age.
In the pineal gland, that shows up as circadian repair. Overexpressed clock genes come back down. CRY2 roughly doubles. The melatonin breakdown product in urine rises about 1.7-fold.
The telomere side runs separately. A gene called hTERT builds the engine of telomerase, and it sits switched off in most adult cells. Epitalon appears to make it readable again.
Benefits
Sleep and circadian rhythm are the most direct benefits, and they are the best supported.
Your pineal gland is the size of a grain of rice, and its job is making melatonin. It is the conductor of the whole rhythm.
Melatonin production drops with age, sometimes dramatically by your thirties and forties.
I cover a Russian study in the video. They gave Epitalon to people in their 20s and their 50s. The 20s group saw nothing, as they were already making plenty. The 50s group increased substantially.
Benefits show up in:
Anyone over 40 or 50 whose sleep quietly degraded
Shift workers and frequent travelers crossing time zones
Longevity-minded people running it once or twice a year
People who fixed light, caffeine, alcohol, and bedroom temperature and still cannot sleep
My HRV improves every time I use it, usually when travel has already suppressed it.
It is not a nootropic. Any cognitive benefit likely comes from sleeping better.
If you are 22, sleeping eight hours and feeling great, I cannot tell you it will do much. No peptide outperforms a dark bedroom and consistent sleep times.
The Dosing Debate
Everywhere online you will see 5 to 10 mg per day for 10 to 20 days.
That number came from clinical schedules used with epithalamin, the crude extract. They carried it over to the pure peptide. Nobody adjusted for the fact that they are different things.
A 2026 analysis scaled the mouse dose to a human equivalent. It landed near 190 to 230 micrograms per day for a 70 kg adult. Roughly 30 times lower.
Here is how I break it down.
Tier 1, general optimization. 0.5 to 1 mg daily subcutaneous, 10 to 20 days, two to three times per year.
Tier 2, active circadian repair. 1 to 2 mg daily for 10 to 30 days. This is where most people should live. Two to three cycles keep your annual exposure near 100 mg.
Tier 3, significant decline. 2 to 5 mg daily for 10 to 20 days. Severe shift work damage or serious jet lag.
Above 5 mg, I have a hard time making the argument. Some people sleep WORSE on the higher doses. Drop them to 1 or 2 mg, and they usually get the effect they wanted.
The oral N-acetyl capsules I have used are 3 mg in the evening. Intranasal sits in a similar range.
Final Thoughts
One to two mg per day is the sweet spot. That is where I start and where most people should start.
For the injectable, I still lean toward cycling. Oral and intranasal, you could probably run continuously. That is an open question, and I am not going to pretend I have it settled.
There is always the speculation around cancer. Telomerase reactivation is what cancer cells do to become immortal, so the concern is legitimate on paper. But mice bred for breast tumors had fewer tumors and lived longer on Epitalon. We do not know definitively about cancer, which is a good reason not to run it year-round.
Will Epitalon have the same benefits as peptides like GLP-1s or even SS-31? No.
Epitalon sits a tier below, and I mean that as a compliment.
It works in the background and makes everything else you do a little better.
Have a great week!
Best,
Hunter Williams