Semax
Also known as ACTH 4-10 analogue
Semax is a synthetic peptide built from a fragment of adrenocorticotropic hormone, ACTH 4 to 10, with a stabilising tail added. It is registered in Russia as a nasal drop for stroke and some cognitive conditions. It is not approved in the UK, EU or US.
Who has Semax in stock
| Supplier | Listing | Price | Per mg | |
|---|---|---|---|---|
| Baltic PeptidesBest valueEU and UK | N-Acetyl Semax Amidate 30mg | €39.99 | €1.33 | In stock, go |
| Peptides UKUK | Semax 5mg | £15.95 | £3.19 | In stock, go |
| Baltic PeptidesEU and UK | Semax 10mg | €34.99 | €3.50 | In stock, go |
| AminoPeptidesUK | Semax Peptide | 5mg | £19.00 | £3.80 | In stock, go |
| Certa PeptidesEU and UK | Semax | €29.99 | – | In stock, go |
| HiPeptidesUK | Semax Nasal Spray | £39.99 | – | In stock, go |
| PEAK_PEPTIDEInternational | Semax | €44.90 | – | In stock, go |
| Certa PeptidesEU and UK | Semax + Selank Blend | €49.99 | – | In stock, go |
| PEAK_PEPTIDEInternational | Semax - complete nasal spray kit | €54.90 | – | In stock, go |
| 99 Purity PeptidesUS | Semax / Selank Comparator | US$84.99 | – | In stock, go |
Live stock is checked hourly at 10 suppliers. A further 7 vetted suppliers have no live feed yet, so we never show them as in stock. We earn a commission from some supplier links when you buy. It costs you nothing extra and never changes the order, which is by price per mg.
What it has been studied for
- Recovery after ischaemic stroke in Russian clinical studies
- BDNF levels in rodent brain
- Attention and memory in small human studies
Evidence level: Early human data. Human data exists, but read the details above before assuming it applies to you.
What happened in human trials
Licensed in Russia as a nasal spray after stroke. Nasal irritation is the main reported effect. Independent trials outside Russia are scarce.
UK legal status
Not licensed as a medicine in the UK. Sold as a research chemical only.
Handling
Supplied as a lyophilised powder. Reconstituted with bacteriostatic water and refrigerated once mixed. Commonly 5mg or 10mg per vial.
Questions
Is Semax a proven nootropic?
The cognitive claims rest on animal work and small Russian studies. There are no large independent trials showing it improves memory or focus in healthy people.
Before you buy anything, run the four-question check for red flags that apply to you.