Buy Epithalon peptide and this is what physically arrives
Buy Epithalon peptide from a research supplier and the parcel contains one thing: a small glass vial holding a white or off-white cake of freeze-dried powder, sealed with a rubber stopper and an aluminium crimp, usually under a coloured flip cap. There is padding, sometimes a printed lot number on the vial or a small label, and nothing else. No box insert. No leaflet. No pharmacy sticker.
The listing we link sells it as a 10 mg vial at $50.00, or $25.00 with the code PEPTIDEDECK, and we earn a commission on that link as our affiliate disclosure explains. The reason this page describes the vial rather than the price is that the physical object is where most of the misunderstandings live, and the price is worked out in full on our Epithalon price breakdown.
The molecule inside is a synthetic tetrapeptide, four amino acid residues in the order Ala-Glu-Asp-Gly, catalogued by PubChem as CID 219042 with formula C14H22N4O9 and a molecular weight of 390.35. FDA and PubChem write the name Epitalon; the market writes Epithalon. Ten milligrams of a compound with that molecular weight is a very small quantity of material, which is why the cake at the bottom of the vial often looks like almost nothing and why people occasionally conclude the vial is empty. It is not.
This page describes what the vial is. It does not describe preparation, reconstitution volumes, doses or schedules, and nothing here should be read as instructions for use. The material is sold for laboratory research and is not labelled for human consumption, which is a description of the product rather than a disclaimer bolted onto it.
What 10 mg on the label means, and what 9.64 mg measured means
A label quantity is a target. A measured quantity is a result. Most research listings only ever show you the first, and the difference between the two is the most useful thing this batch of Epithalon has to teach.
The certificate for batch 15-05260628, issued by Kovera Labs as report KVR-2026-A36FF4 and certified on 23 May 2026, reports a net content of 9.64 mg against a 10 mg label, with a specification of 10 mg plus or minus 10 percent. So it passes. It is also under the label, by about 3.6 percent, and the vendor published that rather than repeating the target back at you.
Two things follow. The first is arithmetic: the vial you buy at $25.00 costs $2.50 per milligram against the label and $2.59 per milligram against the measured content. The second is about documents. A supplier willing to print a number that works slightly against its own listing is behaving differently from one that prints only what flatters it, and that is worth more than the 0.36 mg at stake. The Selank listing on this site publishes a lot assayed at 12.29 mg in a 10 mg vial, roughly 23 percent over the label. Both documents are honest. Only one of them was comfortable to publish.
The wider lesson is that fill weight is a batch property, not a product property. Buy the same product six months from now and you are buying a different batch, with a different certificate, which is under no obligation to report net content at all. Read the document attached to the lot on your vial rather than the one you read the first time.
The one thing the measured figure does not do is tell you the vial is right for anything. It confirms that roughly the labelled amount of material is present at the stated purity. It says nothing about what that material does in a person, and no amount of weighing will produce that answer.
| Attribute | Stated specification | Reported result |
|---|---|---|
| Net content | 10 mg, plus or minus 10 percent | 9.64 mg, inside tolerance and under the label |
| Purity | Greater than 98 percent | 99.312 percent |
| Identity | Conforms | Confirmed |
| Bacterial endotoxin | Not more than 0.5 EU/mL | Pass |
| Microbial sterility screen | No growth | No growth |
| Heavy metals | Screened | Arsenic, cadmium, mercury and others screened |
| Cost per mg at $25.00 | $2.50 on the label | $2.59 on the measured content |
Batch 15-05260628, Kovera Labs report KVR-2026-A36FF4, certified 23 May 2026. Prices read on 23 August 2026.
Why it is sold as lyophilised powder rather than a solution
Freeze-drying is not a packaging preference. Peptides in water are chemically busy: bonds hydrolyse, chains associate with each other, and the rate depends on temperature, pH and how long the liquid has been sitting. Removing the water slows almost all of that down, which is why the format exists and why a powder tolerates a courier network that a solution would not.
It also shifts responsibility. A liquid product has a shelf life set by whoever formulated it, tested it and put a date on the carton. A powder that you convert into a liquid has a shelf life set by you, in your kitchen or your lab, with whatever diluent you chose and whatever technique you used. For an approved injectable those steps happen in a licensed facility under a compounding standard, with someone answerable for the result. Here they do not happen at all until the vial is in your hands.
That is the honest reason the format matters for sterility. The vendor's certificate reports a microbial sterility screen showing no growth and a bacterial endotoxin screen passing a limit of 0.5 EU/mL, tested to USP Chapter 85. Those results describe the powder as it left the lab. Every step after that point, including the first time a needle enters the stopper, is outside the scope of any document either of us can read.
Formats are also where the market gets loosest. Our page on the BPC-157 formats a pharmacy would reject covers pre-mixed solutions, capsules and sprays sold for compounds that no regulator has assessed, and the same shapes show up around this one. A sealed lyophilised vial with a batch-specific certificate is the most checkable version of an unregulated product, which is a genuine argument for it and not an argument that it is regulated.
Storage before and after the vial is opened
Before opening, a lyophilised peptide vial is a robust object. Suppliers generally ship it without cold chain and it will tolerate the ambient temperatures of a two-day domestic transit without drama, which is why a parcel arriving warm is not by itself evidence of a problem. For anything beyond short-term holding, cold storage away from light is the ordinary handling, and a vial that has been sitting on a warm windowsill for a month has had a different history from one in a fridge.
After reconstitution the object is a different one. It is now a solution, with a shelf life measured in weeks under refrigeration at best, and with a stopper that has been punctured. This site does not publish reconstitution methods, volumes or storage windows for a substance with no approved use, because doing so would be writing directions for a product that has none.
The comparison worth holding onto is what a pharmacy would attach to a vial at this point. A dispensed injectable carries a beyond-use date calculated under a standard, storage conditions printed on the label, a lot number tied to a dispensing record, and a pharmacy that can be telephoned. This vial carries a batch number and a PDF. Those are not equivalent, and the gap is not something a careful buyer can close by being careful.
What a pharmacy label would carry that this vial does not
Put a dispensed prescription vial next to a research vial and the difference is mostly text. A pharmacy label names the patient, names the prescriber, states the drug and strength, states directions, carries a beyond-use date, carries the pharmacy's own identity and phone number, and exists inside a dispensing record that a regulator can inspect. Every one of those fields has a person standing behind it.
The research vial carries a product name, a strength that is a label target, and a lot number. That is the whole set. The absence of the other fields is not sloppiness on the vendor's part: printing directions for use on a substance sold for laboratory research would be a compliance problem rather than a service, so the fields stay empty by design.
Which means the paperwork you do get is doing unusual work. The certificate is the only document in this transaction that any third party produced, and the lot number is the only thing tying the object in your hand to that document. Check that they match on arrival. If the vial carries no lot number at all, there is nothing connecting it to any certificate, and a certificate that does not correspond to your specific vial is decoration.
The other thing worth doing on arrival is unglamorous. Look at the cake: a lyophilised peptide should be a dry solid, not a sticky film or a pool. Look at the seal and the flip cap for signs of prior entry. Keep the order confirmation, the lot number and a copy of the certificate together, because if you ever need to raise a dispute those three documents are the entire case file.
| Field | Dispensed prescription vial | Research vial of Epithalon |
|---|---|---|
| Patient name | Printed | Absent |
| Prescriber | Named | None exists |
| Directions for use | Printed | Absent by design |
| Beyond-use date | Calculated under a standard | Absent |
| Lot number | On the label and in the record | On the vial, tied to a published certificate |
| Dispensing record | Held and inspectable | None |
| Someone to telephone | The pharmacy | The vendor's support inbox |
The same object, dispensed two ways.
What FDA has said about peptides in this form
The regulatory position matters here precisely because the format is a compounding format. A vial of bulk peptide powder is what a compounding pharmacy would start from, and the reason no pharmacy starts from this one is documented.
Epitalon was nominated for the 503A bulks list, was placed in category 2 under FDA's interim policies while it was evaluated, and the nomination was then withdrawn. It sits on no current category list. From the agency's page on bulk drug substances that may present significant safety risks: "Compounded drugs containing epitalon may pose risk for immunogenicity for certain routes of administration due to the potential for aggregation and peptide-related impurities. FDA has not identified safety-related information regarding epitalon for the proposed route of administration."
Aggregation is a physical-form problem, which is the direct relevance to a page about what is in the vial. Peptide chains associating with each other is exactly the process that freeze-drying and careful handling are meant to limit, and it is the process that purity and identity testing partly speaks to. So a batch reported at 99.312 percent purity with confirmed identity, no microbial growth and an endotoxin screen passed has addressed part of the concern the agency named.
It has not addressed the second sentence. The absence of safety-related information for the proposed route is not a manufacturing defect that testing can fix; it is a gap in what is known about the substance in humans. A well-made vial of an unstudied compound is still an unstudied compound. That sentence is the one we would keep if the rest of this page were deleted.
What you are actually buying
Ten milligrams on a label, 9.64 mg on the scales, a certificate you can read in full, and a lot number to check it against. In this market that combination is above average, and the honest summary is that the object is well documented for what it is.
What it is, though, is powder rather than a medicine. Nobody dispensed it, nobody wrote directions for it, nobody set a beyond-use date, and nobody is on the other end of a telephone if it goes wrong. Our page on buying MOTS-c as a research vial makes the same point about a different compound, because it is the point that survives whichever peptide the search started with.