Semax Single Vial
Cognitive / Nootropic · single vial · no minimum order
Semax is available as an individual vial shipped from our UK facility, so a laboratory can take one vial rather than a wholesale box. Every single vial is the same material as the factory-direct range, held in the UK for tracked next-working-day delivery, and supplied strictly for laboratory research.
No minimum order
One vial is a valid order
24 hour UK dispatch
Tracked, working days
≥99% stated purity
Buying at volume instead?
The wholesale format is a multi-vial factory-direct box with a lower per-vial cost and a minimum order quantity. See Semax factory direct.

Semax
About Semax
Semax is a synthetic heptapeptide (Met-Glu-His-Phe-Pro-Gly-Pro) classified as a cognitive research compound and recognised as an ACTH 4-10 analogue. This neuropeptide has garnered significant attention in neuroscience research for its multifaceted mechanisms of action and potential applications in cognitive enhancement studies. The primary mechanism of action involves modulation of brain-derived neurotrophic factor (BDNF) expression and other neurotrophins, which are critical for neuronal survival, growth, and synaptic plasticity. Research indicates that Semax enhances the availability of key neurotransmitters including dopamine and serotonin, both essential for cognitive processes such as attention, memory, and mood regulation. Studies demonstrate that Semax inhibits the breakdown of enkephalins, endogenous peptides that regulate pain perception and stress responses. This mechanism may contribute to its observed anxiolytic properties in research models. Additionally, the literature reports potential improvements in cerebral blood flow, which could underlie its cognitive-enhancing effects. Research applications focus on memory retention and recall enhancement, attention and focus improvement, and neuroprotective properties following brain injury in experimental models. Studies indicate potential for reducing anxiety and depression-like behaviours whilst promoting neurological recovery. The evidence base consists primarily of Russian clinical trials suggesting cognitive improvements, particularly in neurological conditions. However, researchers note that these studies often lack rigorous controls, and the evidence grade is classified as B. More high-quality, placebo-controlled trials are needed to fully establish the compound's research potential. The regulatory landscape is evolving, with FDA Category 2 reclassification to Category 1 expected by February 2026.
Mechanism
Semax is a synthetic peptide that primarily acts as a neuroprotective agent by modulating the expression of brain-derived neurotrophic factor (BDNF) and other neurotrophins. It enhances the availability of neurotransmitters like dopamine and serotonin, which are crucial for cognitive processes. Semax also inhibits the breakdown of enkephalins, which are peptides that regulate pain and stress responses. Additionally, it may improve cerebral blood flow, contributing to its cognitive-enhancing effects.
Reported research findings
- Improves memory retention and recall
- Enhances attention and focus
- Reduces symptoms of anxiety and depression
- Promotes neuroprotection and recovery after brain injury
- Increases levels of BDNF in the brain
Why a single vial
Pilot and method work
A single vial covers assay development, method validation or a short pilot run without committing to a wholesale quantity of Semax.
UK held, fast turnaround
Vials ship from our UK facility on a tracked service, so a study is not waiting on an international consignment or a customs queue.
Same material as the box
Single vials are drawn from the same vetted manufacturing source as the factory-direct range, with the same batch documentation.
Predictable spend
Small laboratories and independent researchers can budget one vial at a time rather than a full minimum order quantity.
Storage and handling
Before reconstitution
Store the sealed lyophilised vial at 2 to 8°C, protected from light and moisture. Longer term storage at minus 20°C is common laboratory practice.
After reconstitution
Reconstituted solution is held refrigerated at 2 to 8°C and used within the window appropriate to the compound. Avoid repeated freeze and thaw cycles.
Reconstitution
Bacteriostatic water is the usual diluent. Our reconstitution calculator works out the diluent volume for a given target concentration.
Documentation
Every vial carries a batch number for traceable laboratory records, and independent verification is encouraged.
See the reconstitution guide and the calculator.
FAQs
Can I order a single vial of Semax without a minimum order?+
Yes. The single-vial range exists precisely so a laboratory can take one vial of Semax rather than a full wholesale box. There is no minimum order quantity on this format.
How quickly does a Semax single vial ship in the UK?+
Single vials are held in our UK facility and dispatched within 24 hours of a cleared payment on working days, on a tracked UK service. Orders placed at the weekend go out on the next working day.
How does the single vial differ from the factory-direct box?+
The compound and the manufacturing source are the same. The factory-direct box is a wholesale multi-vial pack with a minimum order quantity and a lower per-vial cost, while the single vial is one vial from UK stock for small-scale or pilot work.
What purity is stated for Semax?+
≥99% manufacturer-stated purity. Buyers are encouraged to run independent third-party verification, and our testing directory lists laboratories that perform it.
Is this Semax vial for human use?+
No. Every PeptX product, including the single-vial range, is supplied strictly for laboratory research. It is not for human consumption, diagnosis, treatment or any clinical use.
What is Semax?+
Semax is a synthetic heptapeptide (Met-Glu-His-Phe-Pro-Gly-Pro) classified as a cognitive research compound. It's an ACTH 4-10 analogue that modulates BDNF expression and neurotransmitter availability in research models, primarily studied for neuroprotective and cognitive enhancement properties.
How does Semax work?+
Semax works by modulating brain-derived neurotrophic factor (BDNF) expression and enhancing dopamine and serotonin availability. It inhibits enkephalin breakdown and may improve cerebral blood flow, contributing to its observed neuroprotective and cognitive-enhancing effects in research studies.
What is the half-life of Semax?+
The specific half-life data for Semax is not definitively established in the current research literature. Researchers should consult the most recent pharmacokinetic studies and consider experimental design requirements when planning research protocols involving this peptide.
How is Semax stored?+
Semax should be stored as a lyophilised powder in a freezer at -20°C or below, protected from light and moisture. Once reconstituted, storage requirements may vary depending on the solvent used and intended research timeline. Always follow institutional guidelines for peptide storage in laboratory settings.
Other single vials in Cognitive / Nootropic
Strictly for laboratory research. Not for human consumption, diagnosis or treatment.