Four amino acids, one research group
Epitalon is Ala-Glu-Asp-Gly: about as short as a peptide gets while still being called one. It came out of work at a St Petersburg institute that had earlier produced a pineal extract, and epitalon was the synthetic sequence proposed as its active fragment.
Almost all of the foundational work traces back to that one group over several decades. That is not a reason to dismiss it, but it does mean the usual safeguard of independent replication is largely absent.
If you arrived here asking what is epitalon, the honest one-line answer is a four-residue synthetic peptide carrying a large reputation on a small, largely single-source evidence base. Holding those two facts together at once is most of the skill of reading anything written about it.
The telomerase question
The claim that gets repeated everywhere is that epitalon activates telomerase. The underlying observations were made in cell culture, and the leap from an enzyme reading in a dish to anything about ageing in an organism is enormous.
Later work looked at circadian markers and various age-related measures in animals. Reading those papers alongside the online summaries is instructive: the summaries are consistently more confident than the studies they cite.
It is worth being precise about what a telomerase reading in a dish is and is not. An enzyme becoming more active in culture is a measurement, not an outcome, and the same caution applies right across this corner of the catalogue, including the way the NAD+ literature is summarised for a longevity audience.
| Sequence | Ala-Glu-Asp-Gly |
| Length | 4 amino acids |
| Origin | Synthetic, from pineal extract research |
| Proposed target | Telomerase, circadian markers |
| Format | Pre-filled peptide pen |
| Purity | ≥ 99% (HPLC) |
| Evidence base | Cell culture and animal work, largely one group |
| Category | Research use only |
Specification data, not outcome data. No row here says what happens after administration.
How to read this literature
Two practical filters help. First, check whether a claim comes from cell culture, an animal model or a human study, because those are three different kinds of statement. Second, check whether anyone outside the original group has repeated it.
Apply both filters to epitalon and what remains is a genuinely interesting research question with a thin evidence base. That is the accurate description, and it is the one we will give you.
Both filters are easier to apply to the primary work than to a summary of it, and the record indexed on PubMed is where the originals sit. None of that is a question a supplier can settle for you. What we can demonstrate is identity, which is the narrow thing a certificate of analysis exists to record.
Storing a four-residue peptide sensibly
A very short sequence is not automatically a fragile one, but epitalon is still supplied as a dry solid for a reason: peptides sitting in solution degrade faster than peptides kept dry and cold. Sealed, refrigerated and out of the light is the baseline condition to assume.
Once reconstituted the clock starts, and the sensible assumption is a limited-life solution rather than an indefinite one. The storage and shelf-life page sets out the mechanisms behind that, and none of them are relaxed by the fact that this sequence is only four residues long.
Epitalon in the catalogue
Every batch clears an HPLC purity floor of 99%, and its certificate travels with it.
Where Epitalon fits in
Where to go next if you want the surrounding picture.
About Epitalon
What customers ask before they order.