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Market data · 78 suppliers · All regions

Buy Semax: 78 suppliers compared

78 of the suppliers we track list Semax. They are ranked by PepFinder rating, which combines reliability, selection, pricing, delivery, support and customer reviews, and shown with the prices they list per mg. We don't sell Semax, and we give no guidance on its use.

Prices checked 23 Sept 2026 · 130 listings · 114 in stock · Neuropeptide analogues

Semax · listed price per mg
USD · 28 suppliersmedian US$3.60/mg
US$1.54/mgUS$40.50/mg
GBP · 16 suppliersmedian £3.80/mg
£0.87/mg£14.03/mg
CAD · 11 suppliersmedian CA$5.25/mg
CA$2.67/mgCA$45.00/mg

Each currency is shown separately; prices are never converted.

Regulatory status

Rules on buying, importing and using this product differ by country. Suppliers list it for laboratory research; nothing here is medical advice.

At a glance · 23 Sept 2026

Suppliers tracked
78 list Semax, 114 listings in stock
Price per mg (USD)
US$1.54/mg to US$40.50/mg, median US$3.60/mg, across 51 listings from 28 suppliers
Test certificates
Not yet collected by PepFinder for Semax; check each supplier's site. How to read a COA
Legal status
Rules differ by country. Legal status by country

What Semax is

Semax is a synthetic seven-amino-acid peptide developed in Russia from a fragment of adrenocorticotropic hormone (ACTH 4-10), with a Pro-Gly-Pro sequence added, and designed to have no hormonal activity. It is registered in Russia as a prescription nasal drop for cognitive and cerebrovascular conditions, but its clinical evidence comes from small Russian studies, and it is not approved in the UK, US, Canada, Australia or New Zealand. Read the full Semax guide, with the published research and references.

  8. 08

    Direct SARMS

    US based
    No reviews yetFrom US$1.77/mg
    7.7/ 10PepFinder ratingRead the review →
    Listing as namedSizePricePer mgStock
    Semax Peptide Vial2mg vialUS$19.99US$10.00/mgIn stockOn their site ↗
    Semax Pre Mixed Peptide 2mg1 cartridgeUS$30.00US$15.00/mgIn stockOn their site ↗
    Semax Pre Mixed Peptide 2mg3 cartridgesUS$81.00US$40.50/mgIn stockOn their site ↗
    Semax Pre Mixed Peptide 2mg2 cartridgesUS$60.00US$30.00/mgIn stockOn their site ↗
    Semax Peptide Vial30mg vialUS$53.14US$1.77/mgIn stockOn their site ↗
  15. 15

    Licensed Peptides

    US based
    Third-party testing statedPublishes COAs
    No reviews yetFrom US$1.54/mg
    7.4/ 10PepFinder ratingRead the review →
    Listing as namedSizePricePer mgStock
    Semax 30mg30mg / 1 packUS$76.99US$2.57/mgIn stockOn their site ↗
    Semax Atomized Solution 30ml50mg / 1 packUS$129.99US$2.60/mgIn stockOn their site ↗
    Semax 30mg30mg / 3 packUS$191.70US$2.13/mgOut of stockOn their site ↗
    Semax 30mg30mg / 5 packUS$269.45US$1.80/mgOut of stockOn their site ↗
    Semax Atomized Solution 30ml50mg / 3 packUS$323.97US$2.16/mgOut of stockOn their site ↗
    Semax Atomized Solution 30ml50mg / 5 packUS$454.95US$1.82/mgOut of stockOn their site ↗

    + 2 more on the full catalogue.

  18. 18

    Panda Peptide

    Third-party testing statedPublishes COAs
    No reviews yetFrom CA$5.00/mg
    7.3/ 10PepFinder ratingRead the review →
    Listing as namedSizePricePer mgStock
    Semax Peptide — Research Vials Canada5MGCA$34.99CA$7.00/mgIn stockOn their site ↗
    Semax (5mg-10mg) — Peptide de recherche au Canada5MGCA$34.99CA$7.00/mgIn stockOn their site ↗
    Semax (5mg-10mg) — Peptide de recherche au Canada10MGCA$49.99CA$5.00/mgIn stockOn their site ↗
    Semax Peptide — Research Vials Canada10MGCA$49.99CA$5.00/mgIn stockOn their site ↗
  19. 19

    PeptideProCanada

    Third-party testing statedPublishes COAs
    No reviews yetFrom CA$5.00/mg
    7.3/ 10PepFinder ratingRead the review →
    Listing as namedSizePricePer mgStock
    Semax Canada – Laboratory Research Reagent (10mg)10mgCA$50.00CA$5.00/mgIn stockOn their site ↗
  63. 63

    Palmetto Peptides

    Third-party testing statedPublishes COAs
    No reviews yetFrom US$6.33/mg
    6.2/ 10PepFinder ratingRead the review →
    Listing as namedSizePricePer mgStock
    Semax 15mg Research Peptide | Nootropic & Neuroprotective Research | COA Verified15mgUS$95.00US$6.33/mgIn stockOn their site ↗

Before you choose a Semax supplier

Price per mg is only half the comparison. Check that the supplier publishes a certificate of analysis for the batch it is selling, ideally from an independent laboratory, and that the certificate confirms identity as well as purity: our guide on how to read a COA shows what to look for. A price far below the rest of the list is more often a warning than a bargain; peptide prices explained sets out why.

For what Semax is and what published studies have found, see our Semax guide. Handling questions are covered in how to store peptides, and the peptide calculator converts a vial size and water volume into concentration and syringe units. Rules on buying and importing differ by country: see legal status by country, or narrow this list to your region above.

Checking a Semax certificate of analysis

  1. The certificate names a laboratory you can find independently, and ideally one with no stake in the result.
  2. It carries a batch or lot number that matches the product page or the vial label, and a test date.
  3. It confirms identity by mass spectrometry, not only purity by HPLC. Purity alone does not show the vial contains Semax.
  4. It includes the chromatogram and mass spectrum, not just a summary table.
  5. Where the laboratory offers online verification of its reports, the report number checks out.

Red flags

  • No certificates at all, or certificates available only “on request”.
  • The same certificate used for several products or several years of stock.
  • Payment only by cryptocurrency or bank transfer, with a discount for paying that way.
  • A price far below every other supplier on this page.
  • No company name, address or way to contact the business other than a web form.
  • Vials labelled only with a code rather than the product name and strength.

How to spot a fake peptide supplier explains each of these in more detail, and third-party peptide testing covers what independent results can and cannot prove.

Vials, capsules and pre-mixed products

Most research peptides are sold as freeze-dried (lyophilised) powder in sealed vials, which is mixed with a diluent such as bacteriostatic water before use in the lab. Some suppliers also sell pre-mixed solutions, nasal sprays or capsules under the same name. These are different products with different stability and dosing, so compare price per mg only between the same form, and check which form a listing is before comparing it with the rest of the table.

Semax: questions

Where can I buy Semax?

78 of the suppliers PepFinder tracks list Semax. The highest rated are Simply Peptides, Bluum Peptides, Elite Research Labs. The list on this page is ranked by PepFinder rating, which weighs reliability, delivery, pricing, support and customer reviews; nobody pays to be included or to rank higher.

How much does Semax cost?

Listed prices in USD run from US$1.54/mg to US$40.50/mg, median US$3.60/mg, across 51 listings from 28 suppliers. Compare price per mg rather than price per vial, and only within one currency; a price far below the rest is more often a warning than a bargain.

What sizes is Semax sold in?

Suppliers on this page list Semax in 2mg vial, 1 cartridge, 3 cartridges, 2 cartridges, 2mg Vial, Twin Pack 2mg Vial. Most research peptides are sold as freeze-dried powder in sealed vials; capsules, sprays and pre-mixed solutions are different products, so compare price per mg only between the same form.

Is Semax legal to buy?

It depends on the country. PepFinder summarises the rules for the UK, the US, Canada, Australia and New Zealand, with links to the regulators' own statements. Choose a region above to see suppliers and the rules for that country.

How do I check a Semax supplier's test results?

Ask for a certificate of analysis for the batch being sold, and check that it names the laboratory, the batch number and the test date, and that it confirms identity by mass spectrometry as well as purity by HPLC. PepFinder has not yet collected certificates for Semax from these suppliers, so check each supplier's own site.

How this list is built: suppliers appear because they list Semax on their own website, read by our catalogue checks; nobody pays to be included or to move up. Ranking is by PepFinder rating. Prices, sizes and stock are as each site listed them when checked and may have changed. Provisional scores are based on incomplete research.