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Semax is a neuropeptide derived from the ACTH 4–10 fragment, extensively researched for its role in neurotrophic signalling, synaptic modulation, and neuronal plasticity. Scientific studies highlight its influence on brain derived neurotrophic factor (BDNF) expression, neurotransmitter regulation, and gene expression pathways associated with neural adaptation. Due to its stability and targeted molecular activity, Semax is widely utilised in neuroscience /cognitive research.
Semax is a synthetic heptapeptide derived from a fragment of adrenocorticotropic hormone (ACTH 4–10), structurally modified to eliminate hormonal activity while preserving neuroactive properties. It is extensively researched in neuroscience and molecular biology for its role in neuropeptide signalling, synaptic modulation, and central nervous system regulatory pathways. Due to its unique origin and targeted activity, Semax occupies a distinct position within neuropeptide research. In laboratory research environments, Semax is utilised to investigate neurotrophic signalling, neuronal communication, and adaptive neural response mechanisms. Its defined molecular structure and stability allow for precise study of peptide mediated signalling processes within complex neural systems. Semax is widely recognised in scientific literature for its relevance in advanced neurobiological research focused on cognitive signalling pathways and neuronal plasticity.
(Recommend, Reconstitute with-Acetic Acid)
Semax is based on the ACTH 4–10 peptide sequence with the addition of a C-terminal proline glycine proline (PGP) fragment, which enhances peptide stability and resistance to enzymatic degradation. Importantly, Semax does not activate adrenal hormone pathways, allowing researchers to isolate and study neuropeptide signalling without endocrine interference. At the molecular level, Semax has been shown to influence expression of neurotrophic factors, including brain derived neurotrophic factor (BDNF), and to modulate intracellular signalling pathways associated with synaptic transmission, neuronal survival, and adaptive plasticity. These actions provide insight into how short chain peptides regulate complex neural communication networks. Semax is also studied for its interaction with neurotransmitter systems and its ability to affect gene expression related to stress-response regulation and neuronal adaptation, making it a valuable tool in molecular neuroscience research.
Semax is extensively researched in neuroscience, neurobiology, and molecular signalling studies, particularly in investigations examining neuroplasticity, synaptic regulation, and neurotrophic factor expression. Researchers utilise Semax to explore peptide based modulation of neural signalling pathways in controlled experimental models. In cognitive and behavioural research models, Semax is studied for its influence on neuronal communication efficiency, adaptive stress response signalling, and central nervous system regulatory mechanisms. These studies contribute to a broader understanding of neuropeptide-mediated neural adaptation. Additionally, Semax is employed in advanced research examining gene expression modulation, neuronal resilience, and peptide based regulation of brain signalling networks. Its extensive documentation and unique molecular profile make Semax a cornerstone compound in contemporary neuropeptide research.
Note: Reconstitute with 50% Bacteriostatic (BAC) water and 50% Acetic Acid for best results.
DSIP 10mg
Selank 10mg
Thymosin 10mg
Trade supply
Peptides sets
Bulk purchase range
Semax is a neuropeptide derived from the ACTH 4–10 fragment, extensively researched for its role in neurotrophic signalling, synaptic modulation, and neuronal plasticity. Scientific studies highlight its influence on brain derived neurotrophic factor (BDNF) expression, neurotransmitter regulation, and gene expression pathways associated with neural adaptation. Due to its stability and targeted molecular activity, Semax is widely utilised in neuroscience /cognitive research.
Semax is a synthetic heptapeptide derived from a fragment of adrenocorticotropic hormone (ACTH 4–10), structurally modified to eliminate hormonal activity while preserving neuroactive properties. It is extensively researched in neuroscience and molecular biology for its role in neuropeptide signalling, synaptic modulation, and central nervous system regulatory pathways. Due to its unique origin and targeted activity, Semax occupies a distinct position within neuropeptide research. In laboratory research environments, Semax is utilised to investigate neurotrophic signalling, neuronal communication, and adaptive neural response mechanisms. Its defined molecular structure and stability allow for precise study of peptide mediated signalling processes within complex neural systems. Semax is widely recognised in scientific literature for its relevance in advanced neurobiological research focused on cognitive signalling pathways and neuronal plasticity.
(Recommend, Reconstitute with-Acetic Acid)
Semax is based on the ACTH 4–10 peptide sequence with the addition of a C-terminal proline glycine proline (PGP) fragment, which enhances peptide stability and resistance to enzymatic degradation. Importantly, Semax does not activate adrenal hormone pathways, allowing researchers to isolate and study neuropeptide signalling without endocrine interference. At the molecular level, Semax has been shown to influence expression of neurotrophic factors, including brain derived neurotrophic factor (BDNF), and to modulate intracellular signalling pathways associated with synaptic transmission, neuronal survival, and adaptive plasticity. These actions provide insight into how short chain peptides regulate complex neural communication networks. Semax is also studied for its interaction with neurotransmitter systems and its ability to affect gene expression related to stress-response regulation and neuronal adaptation, making it a valuable tool in molecular neuroscience research.
Semax is extensively researched in neuroscience, neurobiology, and molecular signalling studies, particularly in investigations examining neuroplasticity, synaptic regulation, and neurotrophic factor expression. Researchers utilise Semax to explore peptide based modulation of neural signalling pathways in controlled experimental models. In cognitive and behavioural research models, Semax is studied for its influence on neuronal communication efficiency, adaptive stress response signalling, and central nervous system regulatory mechanisms. These studies contribute to a broader understanding of neuropeptide-mediated neural adaptation. Additionally, Semax is employed in advanced research examining gene expression modulation, neuronal resilience, and peptide based regulation of brain signalling networks. Its extensive documentation and unique molecular profile make Semax a cornerstone compound in contemporary neuropeptide research.
Note: Reconstitute with 50% Bacteriostatic (BAC) water and 50% Acetic Acid for best results.
DSIP 10mg
Selank 10mg
Thymosin 10mg
Trade supply
Peptides sets
Bulk purchase range


Allow the vial to reach room temperature
This helps prevent condensation, which can compromise sterility when you open the vial.

Draw up the solvent
Using a sterile syringe, measure the precise amount of bacteriostatic water or your chosen solvent.

Inject the solvent gently
Insert the needle into the vial at a 45-degree angle so the liquid runs down the inside wall, which reduces bubbling and foam.

Dissolve the peptide
Swirl the vial gently until the peptide powder is completely dissolved. Avoid shaking, as this can damage the peptide bonds.

Aliquot the solution
If smaller, single-use portions are needed, divide the solution into sterile microtubes using a new, sterile syringe or pipette for each.

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Read More on Storage Guidelines

If you have any questions regarding our research peptides for sale, please feel free to reach out below.
Evri UK Tracked 1-2 Business Days
This costs; £4.99 per order
European DHL Express Tracked 1-2 Days
This cost; £24.99 per order
Bioplex Peptides offers fast and reliable 1-2 days delivery across the UK with full tracking included. Note; Due to the nature of our products, we only dispatch samples between Monday-Thursday, orders after 12pm will be shipped the following day.
*We aim to dispatch and deliver orders within the stated timeframes, but delays can occur due to severe weather, transport issues, public holidays, or other unforeseen events. Once an order has been dispatched, extended delivery times are outside our control.
United States of America & Canada 1-2 Business Days
This cost; £24.99 per order
International Delivery 1-3 Business Days
This cost; £29.99 per order
Bioplex Peptides offers fast and reliable 1-3 days worldwide delivery with full tracking included using the worlds fastest and most reliable courier available with a discounted rate for all EU & International customers. Delays may occur due to natural causes such as severe weather conditions, transportation disruptions, public holidays, or other unforeseen events. All international samples ship Monday–Saturday, ensuring steady worldwide delivery scheduling.
Orders are typically processed within 24hrs after payment confirmation. Custom peptide synthesis orders and wholesale orders may require additional lead time depending on complexity and quantity. Clients will be notified of estimated delivery timelines upon order confirmation.
We utilize reliable courier services such DHL Express Premium 1-2 Business days for all International deliveries and Evri & Royal Mail tracked 1-2 days delivery for all United Kingdom deliveries to ensure timely and traceable delivery. Shipping options may vary depending on destination, order size, and regulatory requirements.
BioPleX Peptides is not responsible for delays caused by customs clearance, weather disruptions, or carrier-related issues.
Due to the specialised and perishable nature of our research peptide products, BioPlex Peptides does not offer general refunds or accept returns once an order has been shipped. All purchases are considered final unless they meet specific criteria outlined below.
We do not provide refunds for products that have been correctly fulfilled and delivered. However, if an item arrives damaged, compromised, or incorrect due to an error on our part, we will offer a replacement at no additional cost. Claims must be submitted within 48 hours of delivery, accompanied by photographic evidence and a description of the issue.
If your parcel has not arrived within the estimated delivery window, please contact our logistics team promptly. We will initiate an investigation with the carrier and provide updates throughout the process. If the parcel is confirmed lost, we will issue a replacement shipment or credit, depending on the circumstances.
Orders may be cancelled within 24 hours of placement, provided production has not yet begun. Custom peptide synthesis orders are non-cancellable once processing has started. To request a cancellation, please email us at enquiries@bioplexpeptides.co.uk with your order number and reason for cancellation.
In the rare event that you receive a damaged or incorrect item, please notify us within 48 hours of receipt. Include your order number, photos of the product and packaging, and a description of the issue. We will assess the claim and, if validated, arrange for a replacement to be shipped promptly.
Read More on Our Returns & Refunds Policy

If you have any questions regarding our research peptides for sale, please feel free to reach out below.