Semax Price: $30.00 a Vial and Nothing Else to Pay

Summary: Semax is priced like a research chemical rather than a medicine, so the arithmetic is short and there is only ever one number to pay, which makes what sits behind the number the only thing worth arguing about.

This content is for informational purposes only and is not medical advice. Always consult a qualified healthcare provider before starting, changing, or stopping any medication.

The semax price at Ascension Peptides is $59.99 for a 10 mg vial at list, or $30.00 with the code PEPTIDEDECK entered at checkout. That is $3.00 per milligram of material.

Here is the current offer, with the prices and the batch it ships against.

If you arrived here from this site's GLP-1 coverage, that single figure will feel wrong, because approved drugs do not have one price. A box of semaglutide has a list price, a negotiated price, a copay and a manufacturer coupon, and all four describe the same box. Semax has one number and you pay it. Everything interesting about the cost of this compound therefore sits behind the number rather than beside it.

What the semax price is buying, in plain terms

Semax is not a GLP-1. It is not an incretin, it does not act on appetite, and nothing about it belongs in a weight-loss conversation. Readers meet it in the same forums because it gets discussed as a focus and motivation compound, which is a different claim from a different literature.

What it actually is: a synthetic heptapeptide, seven amino acids in the order Met-Glu-His-Phe-Pro-Gly-Pro. The first four residues are the ACTH(4-7) fragment, and the Pro-Gly-Pro tail on the end is a bolt-on that slows the enzymes that would otherwise take the molecule apart quickly. Its formula is C37H51N9O10S, molecular weight 813.9, catalogued as PubChem CID 9811102 and CAS 80714-61-0 ^[1]. The FDA's own compounding paperwork names it "Semax (heptapeptide)", which independently confirms the seven-residue count.

It was developed in Russia and is registered there. That is a fact about Russian regulation and nothing more. There is no FDA approval for semax for any indication, and the published work a reader outside Russia can actually pull is largely animal research, such as rat models of ischemic brain injury ^[2]. Set that against the drugs this site normally covers, where our explainer on what retatrutide is can point at phase 2 results in a major journal with participant numbers attached. Price semax as an unproven research compound, because that is the category it is sold in.

The semax price today, per vial and per milligram

One product, one size, so the entire price list fits in a table.

Two different mechanisms are sitting in that table and they are easy to blur. The quantity tier applies automatically to the list price based on how many vials are in the cart: 3% at three, 5% at five, 10% at ten. Nothing is typed to trigger it. PEPTIDEDECK is a code you enter at checkout and it takes half off. We are not publishing a combined figure for a multi-vial cart, because whether those two mechanisms interact is not documented anywhere we can verify, and a made-up total would be worse than an empty cell. Build the cart you want, apply the code, and read the number the checkout gives you. That total binds and nothing calculated off-site does.

Worth noticing before you go hunting for the best tier: the deepest quantity discount, 10% off at ten vials, lands at $53.99 a vial, which is $5.40 per milligram. The code alone gets you to $3.00. The tiers are not a route to a better per-mg figure, they are a route to a better total on a large order.

Free shipping starts at $250. A single discounted vial at $30.00 is $220.00 short of it. Three vials at the tiered list price come to $174.57, which still misses. Five vials at $284.95 is the first cart on list pricing that clears the threshold.

The label is 10 mg and the vial is not

This is where the arithmetic gets a second answer. The certificate of analysis for batch 30-05260628, run by Kovera Labs and certified on 15 June 2026 under report number KVR-2026-E848E0, reports a net content of 11.23 mg in a vial labelled approximately 10 mg ^[3].

Divide by the measured mass rather than the label and $30.00 becomes $2.67 per milligram instead of $3.00.

Treat the second row as a note about one batch, not a standing promise. A certificate describes the lot it was run on and nobody has committed to filling the next one the same way. Use the label figure when you compare one vendor against another, because the label is the only number every seller states.

What the testing on this batch actually is

The reason this page spends more time on a certificate than on a price is that the certificate is where the real differences live, and price is not what moves them.

Batch 30-05260628 was tested for more than most research peptide lots are. Purity came back at 99.886% against a greater-than-98% specification, by reversed-phase HPLC on a C18 column with diode array detection at 214 nm. Identity was confirmed by LC-MS. Bacterial endotoxin was measured by kinetic chromogenic LAL assay in accordance with USP Chapter 85, against an E. coli O111:B4 standard over a detection range of 0.01 to 1.0 EU/mL, returning a result of under 0.20 EU/mL against an acceptance limit of 0.5 EU/mL. A rapid microbial sterility screen returned no growth. Heavy metals were screened by ICP-MS and came back negative for arsenic, cadmium, lead and mercury ^[3].

That is an unusually complete document for this corner of the market, and what produced it was a testing round rather than a price tier. The same vendor's February 2026 certificates carry purity, identity and a quantification figure and no endotoxin test and no sterility screen at all, on this compound and on the neighbouring Selank alike, and the June 2026 batches of both carry the fuller panel. Our page on the Selank price and what its certificate leaves out works through the thinner document in detail. Selank lands at $2.38 per milligram after the code and semax at $3.00, and that 62 cent difference does not buy you any extra assay.

None of that converts into a safety claim, and this is the sentence the rest of the page hangs on. The FDA's stated concern about this compound is that compounded drugs containing semax may pose risk for immunogenicity for certain routes of administration due to the potential for aggregation and peptide-related impurities, and that the agency lacks sufficient information to know whether the drug would cause harm if administered to humans ^[4]. A clean endotoxin result on one batch answers a piece of that question for that batch. The sterility line is a rapid two-day screen, and its own report notes that full USP Chapter 71 testing may be required for regulatory compliance, so it is not a guarantee either. Neither answers the part about human data, because no certificate can.

The spray market is not a price comparison

Search for semax and you will find pre-mixed nasal sprays sold by consumer nootropic retailers alongside the vials. We are not publishing prices for those, because we could not verify a source for them that resolves, and a plausible-looking invented range is worse than nothing.

The structural point holds without any numbers. A bottle of solution and a vial of dry powder are not the same object. The bottle is a finished aqueous product at a concentration somebody else chose, with a preservative system you are usually not told about and a shelf life measured against liquid sitting at room temperature. The vial is lyophilised powder sold by mass with a batch number attached. Comparing the two on price compares a prepared meal with a bag of flour, and the per-mg column that makes vial-to-vial comparison honest does not exist for a bottle.

There is no second semax price

No insurer prices this. There is no FDA-approved semax product for any indication, so there is no claim to adjudicate, no formulary tier and no appeal. The compounding route is closed as well: semax was nominated for the 503A bulks list, was placed in category 2 under the FDA's interim policies while the agency evaluated it, and the nomination was then withdrawn by the nominator. It sits on no category list at all today. A pharmacy has no lawful bulk substance to compound from, so there is nothing for a pharmacist to price and nothing to bill.

Readers who have worked through our guide to what GLP-1 medications cost will recognise how unusual that is. Every price on this page is a cash price, quoted once, with no second number behind it. Our BPC-157 price page covers a peptide in the same position, and the pricing logic transfers directly.

We earn a commission if you use the link on the card above. That is disclosed on the card and in our disclaimer, in line with the FTC endorsement guides ^[5].

Common questions about the semax price

How much does semax cost?

At the supplier linked on this page, $59.99 for a 10 mg vial at list, or $30.00 with the code PEPTIDEDECK, which is $3.00 per milligram. The card carries the date those prices were last checked, and a storefront can change them without notice.

Why does the per-mg figure change to $2.67 further down the page?

Because the certificate for batch 30-05260628 reports a net content of 11.23 mg in a vial labelled approximately 10 mg. Dividing $30.00 by the measured mass rather than the label gives $2.67. That applies to that batch and is not a promise about the vial you receive.

Do the quantity tiers beat the code?

No. The deepest tier is 10% off list, which is $53.99 a vial or $5.40 per milligram, while the code takes half off and gets you to $3.00. They are separate mechanisms, one automatic and one typed, and we do not claim they combine. Build the cart, apply the code and read the checkout total.

Why is semax more expensive per mg than selank from the same vendor?

Selank is $2.38 per milligram after the same code, and testing scope is not the reason. Both compounds have a February 2026 certificate without endotoxin, sterility or heavy metals and a June 2026 batch with all three, so the premium buys no extra assay. The price difference is a pricing decision, and the testing question is answered by which batch you are shipped.

Does a low semax cost per vial mean poor material?

Price tells you very little in a market with no reference price, no insurer negotiating and no approved competitor. What separates one vial from another is the certificate: batch-matched to the lot you were sent, purity against a stated specification, identity by mass spectrometry, and endotoxin and sterility results for anything intended to be injected. Read every certificate on the product page rather than only the clickable one, because the price column will never tell you which vial has which.

Will insurance or an HSA cover any of this?

No. There is no approved semax product to reimburse, and research material is sold for laboratory use rather than human use, which puts it outside medical expense categories entirely. There is no claim to file at any stage.

The short version

The semax price is $59.99 at list, $30.00 with PEPTIDEDECK, and $3.00 per milligram against the label. Net content on batch 30-05260628 was 11.23 mg, which drops the real figure for that lot to $2.67. Quantity tiers move the list column by 3% to 10% on a mechanism the code is not documented to stack with, and none of them beats the code on a per-mg basis. There is no insurer, no copay and no compounding route behind any of it, because the nomination that could have opened one was withdrawn. What batch 30-05260628 comes with is a genuinely complete certificate, including the endotoxin and rapid sterility testing that speaks to the FDA's stated worry, which the February batch did not carry and which the price did not buy. What no price can buy is human safety data, and no vendor on any list has that to sell.