Semax is a synthetic heptapeptide based on the ACTH(4-10) fragment with a C-terminal Pro-Gly-Pro extension, supplied as a lyophilised powder. It is supplied strictly for laboratory research use only.

What research area is Semax associated with?

Published preclinical laboratory work in this class concerns neurotrophin (BDNF) expression chemistry in cell culture. We supply the material only; we make no representation as to any outcome, effect, or suitability for any purpose.

Is Semax approved for human use?

No. Semax is not a drug, supplement, food, cosmetic, or medical device, and has no approved human or veterinary indication. It is sold strictly for in-vitro laboratory research use by qualified professionals.

What purity is Semax supplied at, and how is it verified?

Each lot is assayed by HPLC and ships with its own lot-specific Certificate of Analysis, published in our COA registry. Purity figures are stated per lot - we do not publish a brand-wide specification in place of the actual certificate.

Semax

Synthetic ACTH-fragment heptapeptide, supplied for laboratory research use only.

99.74% pure on this exact lot, verified by an independent lab, not by us
Tested in the USA. Ships within 1 business day, stored frozen, stable at room temperature until you mix it
Retest it at any lab. If it doesn't match our report, every dollar back

$59/ 10mg vial

$29.50 per vial with Buy 1, Get 1 Free

Buy 1, Get 1 Free· add 2, applied automatically

99.74% pure on this exact lot, verified by an independent lab, not by us
Tested in the USA. Ships within 1 business day, stored frozen, stable at room temperature until you mix it
Retest it at any lab. If it doesn't match our report, every dollar back

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All products currently listed on this site are for research purposes only.

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Proof, not promises. Every batch, tested by an outside lab.

Every batch of Semax is tested by an outside lab before it goes on sale — not by us. The one shipping now is lot N52669: 99.74% pure by HPLC, tested by Freedom Diagnostics on 19 Oct 2026. The signed report is right here. Purity is the number the lab measured, never “at least 99” — and a batch that misses its spec never ships.

Semax · 10mgLot N52669Live batch data

Purity99.74%

Passed

Tested by: Freedom Diagnostics
Tested on: 19 Oct 2026
Net content: 10.83 mg

Contaminant screens

Heavy metalsEndotoxinsMicrobialSolvents

See all lab reports

What happens before a vial reaches you

1Made in a controlled facilityDocumented, repeatable steps for every batch.
2Purity testedAn outside lab measures it and reports the exact number.
3Identity confirmedA second test proves it is what the label says.
4Report publishedSigned, filed by lot number, and public before the vial ships.

Live batch data

Freedom Diagnostics

Independent analytical lab

Certificate of Analysis

RESULT · PASS

Lot N52669Verified

Semax 10mg

HPLC purity

99.74%

Pass · Meets spec

Tested

19 Oct 2026

HPLC-UV + LC-MS

Analytical results

Identity (LC-MS)ConfirmedPASS

Net content10.83 mgPASS

HPLC Chromatogram

Main peak 99.74% · other 0.26%

Alex JohnsonPrincipal Chemist

Authentichain · Verified 2×

BDNFneurotrophin

Neural repairpost-injury genes

Neurotransmittersdopamine / serotonin

How Semax works

A nootropic research peptide studied for boosting the brain's growth and repair signals.

BDNFneurotrophin

Studied for raising BDNF, a protein that helps brain cells grow and form new connections.

Neural repairpost-injury genes

Investigated for switching on repair genes after a stroke-like injury in rat models.

Neurotransmittersdopamine / serotonin

Researched for effects on the dopamine and serotonin systems.

For research use only. Mechanisms described reflect published research literature.

Every batch we've tested

Anyone can show you one good report. Here is every batch of Semax we have ever released, newest first, each with its own signed report. Nothing hidden, nothing cherry-picked.

5 batches on record · latest tested 19 Oct 2026

All lab reportsEvery Semax batch, on one page.The full testing history with every signed report. No login, no email wall.See all lab reports

What the studies found

Published findings on this compound, each linked to its source. Animal and lab results are context, not claims about this product.

BDNF in the brainPreclinical

In rat studies, Semax bound in the basal forebrain and raised levels of BDNF — a protein that helps brain cells grow and repair — above untreated controls.

vs untreated controls

J Neurochemistry 2006 · preclinical (rat)

Controlbaseline

Semaxraised BDNF

Rat basal forebrain; directional finding, magnitudes illustrative.

Repair genes after strokePreclinical

After a stroke-like injury in rats, Semax switched on genes for neurotrophins and their receptors — the growth-factor machinery tied to neural repair.

Neurotrophin genes ↑activatedReceptor genes ↑activated

Rat cerebral ischemia; transcription upregulated vs control.

Cell Mol Neurobiology 2010 · preclinical (rat)

Dopamine & serotoninPreclinical

In rodents, Semax activated the brain's dopamine and serotonin systems — the signaling pathways behind mood, motivation and focus.

Baselinebaseline

Dopamine systemactivated

Serotonin systemactivated

Rodent brain; directional finding, magnitudes illustrative.

Neurochemical Research 2005 · preclinical (rodent)

Full research pages: Semax: A Seven-Amino-Acid Peptide With a Stroke Trial Behind It, Semax vs Selank: What Separates Two Peptides From the Same Lab