Semax is a synthetic peptide originally developed in Russia, based on a fragment of ACTH. It is studied in cognitive and neuroprotection research and is sold for laboratory and research use only.

How is Semax related to Selank?

Semax and Selank are both short peptides developed in Russia and studied in the cognitive and mood research category. Semax is studied more for cognition and neuroprotection, and Selank more for anxiety-related pathways, so they are often grouped together in research.

How is Semax reconstituted and stored?

Semax ships as a lyophilized powder and is reconstituted with bacteriostatic water, with the water volume setting the mg/mL concentration. Reconstituted vials are refrigerated and, as a general research guideline, used within about 28 days.

Research Overview · Research Use Only

Semax: research overview

Q: What is Semax studied for?

In research Semax has been investigated for its interaction with brain signaling and neuroprotection pathways, including effects on BDNF-related activity. These are research findings and do not establish human use.

Semax is a synthetic peptide originally developed in Russia and studied in the cognitive and neuroprotection research category. Based on a fragment of the ACTH hormone, it is one of the better-known research peptides in the brain and mood space, and is frequently grouped with Selank.

Research use only. Semax is an investigational research compound, not an approved product. This page is educational reference for laboratory research and is not medical advice or human-use guidance. All products are sold strictly for research use and are not for human consumption.

What is Semax?

Semax is a short synthetic peptide derived from a fragment of adrenocorticotropic hormone (ACTH), modified for stability. It was developed in Russia and sits in the cognitive, mood, and neuroprotection research category alongside peptides like Selank.

What research has explored

In research, Semax has been investigated for its interaction with brain signaling and neuroprotection pathways, including activity related to BDNF (brain-derived neurotrophic factor). These are research findings, not established human outcomes; Semax is not approved for human use and is studied as a research material only.

Semax and Selank

Semax and Selank are both short peptides developed in Russia and are commonly studied together in the cognitive and mood category. In broad terms, Semax is studied more around cognition and neuroprotection, while Selank is studied more around anxiety-related pathways. Both appear in the research peptide catalog.

Forms & handling in the lab

Semax ships as a lyophilized (freeze-dried) powder, commonly in 10 mg research vials. Before use it is reconstituted with bacteriostatic water; the water volume you add sets the concentration in mg/mL.

Storage & stability

Lyophilized powder - most stable form; keep frozen or refrigerated and protected from light until reconstituted.
Reconstituted solution - refrigerate at roughly 2-8 °C; as a general research guideline, use within about 28 days.
Avoid repeated freeze-thaw cycles, heat, and shaking, which can degrade the peptide.

Frequently asked questions

What is Semax?

A synthetic peptide based on an ACTH fragment, developed in Russia and studied in cognitive and neuroprotection research. Sold for laboratory and research use only.

What is Semax studied for?

In research it has been investigated for brain signaling and neuroprotection pathways, including BDNF-related activity. These are research findings and do not establish human use.

How is it related to Selank?

Both are short Russian-developed peptides in the cognitive and mood category. Semax leans toward cognition and neuroprotection, Selank toward anxiety-related pathways.

How is Semax reconstituted?

With bacteriostatic water; the water volume sets the mg/mL concentration. Our reconstitution guide covers the math.

Related guides

Semax & cognitive peptides in the catalog

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Research Use Only. All products are sold strictly for laboratory and research purposes and are not for human consumption, medical, veterinary, or diagnostic use. Your Peptide Partner is not a compounding pharmacy under Section 503A, nor an outsourcing facility under Section 503B, of the Federal Food, Drug, and Cosmetic Act. Semax is an investigational research compound and is not an approved product. This page is educational reference only - it is not medical advice or dosing guidance. By ordering you confirm you are a qualified purchaser and agree to our Terms & Conditions; all orders are subject to review and acceptance. See our Research Compliance policy.