

Semax Nasal Spray
10mg/5ml
- Purity ≥99%, verified by HPLC and mass spectrometry
- 10mg/5ml per unit
- Nasal sprays & droppers
- Free gifts from €200: sample, bacteriostatic water, full-size product
- Secure checkout · Tracked, discreet EU dispatch
- For Research Use Only. Not for Human or Animal Consumption.
Testing and Certificate of Analysis
Every batch is tested by an independent laboratory using HPLC and mass spectrometry before release. The Certificate of Analysis for your batch is sent on request.
- Method
- HPLC + ESI-MS
- Purity target
- ≥99%
Description
Semax nasal spray for research: 10 mg of Semax dissolved in 5 ml saline (about 90% NaCl, a little bacteriostatic water to preserve it), in a 5 ml amber glass bottle with a nasal spray pump. An independent lab confirms at least 99% purity by HPLC and mass spectrometry, and a Certificate of Analysis (COA) comes with every batch.
What is Semax?
Semax is a synthetic heptapeptide with the sequence Met-Glu-His-Phe-Pro-Gly-Pro. It joins the ACTH(4-7) fragment of adrenocorticotropic hormone to a Pro-Gly-Pro tail that protects the chain from enzymes and stretches its half-life from minutes to hours. It was developed at the Institute of Molecular Genetics in Moscow in the 1980s. Unlike full ACTH, Semax does not drive the adrenal cortex, so research centres on the central nervous system instead.
- Neurotrophic signalling: BDNF and NGF levels, and the TrkB pathway in neurons and glia.
- Cognitive models: learning, memory and attention tasks in rodents.
- Ischemia and stress: animal models of cerebral ischemia and of the stress response.
Results from cell and animal studies cannot be applied directly to humans. If you prefer to weigh and dissolve the peptide yourself, the same compound comes as a Semax 40 mg vial.
The nasal spray
The bottle is ready to use and needs no reconstitution, which removes one source of error from a study. One press delivers about 0.12 ml of a 2 mg/ml solution, so about 240 mcg of Semax per spray, and the 5 ml bottle holds about 40 sprays. Keep it upright and store it cold.
Semax or Selank?
Both come out of Russian peptide research and both are studied for neurotrophic effects, but they are different molecules with different targets. Semax is the ACTH fragment and is followed mainly through BDNF and NGF. Selank is a tuftsin analog, a piece of immunoglobulin G, and is studied for the GABA system instead. Many labs run the two side by side. We also carry Selank as a nasal spray.
Buy Semax nasal spray: quality, storage and shipping
Every batch is made in a controlled cleanroom. Mass spectrometry confirms the identity of the peptide and HPLC confirms its purity. Our guide on how to read a peptide COA explains what each value on the certificate means.
Store the spray at 2 to 8 °C and away from light, and use it within 30 days of opening. Orders ship discreetly with tracking across the EU, and you can pay by card, Google Pay or crypto.
Questions about Semax nasal spray
What is the molecular weight of Semax?
About 813.9 g/mol, with the molecular formula C37H51N9O10S.
Does the spray need reconstitution?
No. The peptide is already dissolved in saline, so the bottle is ready to use. It only needs to stay cold and to be used within 30 days of the first spray.
For Research Use Only. Not for Human or Animal Consumption.
Semax Nasal Spray: common questions
Is Semax Nasal Spray lab tested?
Yes. Every batch of Semax Nasal Spray targets at least 99% purity, checked by HPLC and mass spectrometry.
What sizes does Semax Nasal Spray come in and what do they cost?
Semax Nasal Spray comes in these sizes, with prices in euro: 10mg/5ml for €69.99.
Is there a discount for buying more Semax Nasal Spray?
Yes. The discount applies in the cart: 3 items take 5% off, 6 items take 10% off and 8 items take 15% off.
How fast does Semax Nasal Spray ship?
We dispatch within 1 to 3 business days, tracked and in discreet packaging. Delivery usually takes 3 to 10 business days within the EU.
Is Semax Nasal Spray for human use?
No. Semax Nasal Spray is for research use only, not for human or animal consumption, and sales are restricted to adults 18 and over.



