What is Semax and its mechanism of action?

Semax is a synthetic heptapeptide (7 amino acid sequence: Met-Glu-His-Phe-Pro-Gly-Pro) derived from the adrenocorticotropic hormone (ACTH) fragment ACTH(4-10). Semax functions as a potent nootropic and neuroprotective peptide through multiple complementary mechanisms: (1) BDNF upregulation - increasing brain-derived neurotrophic factor gene expression and protein levels, promoting neuroplasticity, synaptic strengthening, and neuronal survival, (2) Neurotransmitter modulation - enhancing dopamine, serotonin, and norepinephrine metabolism without direct receptor agonism, (3) Antioxidant effects - reducing oxidative stress and protecting neurons from free radical damage, (4) Anti-inflammatory properties - downregulating pro-inflammatory cytokines in neural tissue, (5) NGF enhancement - upregulating nerve growth factor supporting neuronal health, and (6) Cerebral blood flow improvement - enhancing oxygen and nutrient delivery to brain tissue. This multi-faceted neuroprotective mechanism makes Semax invaluable for cognitive function research, neuroprotection studies, BDNF signaling investigations, and nootropic peptide pharmacology in laboratory neuroscience models.

What research applications benefit from Semax studies?

Semax excels in cognitive enhancement and nootropic mechanism research, BDNF-mediated neuroplasticity pathway studies, neuroprotection and oxidative stress research, neurotransmitter modulation investigations (dopamine, serotonin systems), ischemic stroke and cerebral injury research, attention and focus mechanism studies, memory consolidation and learning pathway research, comparative nootropic peptide studies (Semax vs Selank vs Noopept), neurodegenerative disease research models (Alzheimer's, Parkinson's), mood regulation and stress adaptation research, and ACTH fragment pharmacology. Ideal for laboratories investigating cognitive neuroscience, neuroprotective strategies, neurotrophic factor signaling, and peptide-based cognitive enhancement in behavioral neuroscience research models.

What purity and quality standards does your Semax meet?

Our Semax exceeds >98% purity verified by HPLC analysis. Each batch undergoes mass spectrometry molecular weight confirmation for the Met-Glu-His-Phe-Pro-Gly-Pro heptapeptide structure, amino acid sequence verification, bioactivity testing using BDNF expression assays (ELISA or Western blot in neuronal cultures), neuroprotection assays (oxidative stress survival tests), or cognitive task performance assays in research models, endotoxin screening (<0.1 EU/mg), and comprehensive Certificate of Analysis documentation. The high purity ensures reproducible BDNF upregulation and neuroprotective effects without degradation products, sequence variants, or contaminants interfering with cognitive neuroscience research. Each batch includes detailed analytical data supporting regulatory compliance and research reproducibility.

Can Semax be used in comparative nootropic research?

Absolutely! Semax serves as a reference BDNF-upregulating nootropic in comparative studies against Selank (anxiolytic nootropic), Noopept (BDNF modulator), racetams (piracetam, aniracetam), traditional stimulants (modafinil, caffeine), and other cognitive enhancers. Researchers use Semax to investigate BDNF-dependent vs BDNF-independent cognitive enhancement mechanisms, compare peptide-based vs small-molecule nootropics, study structure-activity relationships of ACTH-derived peptides, examine synergistic effects of combined nootropic interventions, and evaluate cognitive domain specificity (attention vs memory vs processing speed) in laboratory cognitive neuroscience models. Semax's unique ACTH origin and BDNF mechanism complement other nootropic research tools for comprehensive cognitive enhancement studies.

How should Semax be stored and reconstituted?

Store lyophilized Semax at -20°C in original sealed vials for 24+ months stability. The 7 amino acid sequence provides good chemical stability in lyophilized form with proper storage. Reconstitute with bacteriostatic water or sterile saline by adding solvent slowly down vial wall, then gently swirl (never shake) until completely dissolved at 0.5-2 mg/mL concentration. Refrigerate reconstituted solution at 2-8°C and use within 14 days. Avoid multiple freeze-thaw cycles to preserve BDNF-upregulating and neuroprotective bioactivity. For extended cognitive studies requiring multiple dosing over weeks, aliquot into single-use vials immediately after reconstitution to maintain peptide integrity throughout long-duration behavioral neuroscience protocols. Proper storage ensures consistent BDNF expression and cognitive enhancement effects in research applications.

What makes Semax unique for cognitive neuroscience research?

Semax's ACTH(4-10) origin gives it unique neuroendocrine connections linking stress hormone pathways with cognitive function - a valuable research interface. Unlike direct neurotransmitter agonists (amphetamines, dopamine agonists) that can cause tolerance or side effects, Semax modulates endogenous neurotransmitter metabolism indirectly while upregulating neurotrophic factors (BDNF, NGF) for sustained neuroplasticity enhancement. The combination of immediate cognitive effects (enhanced neurotransmission) plus long-term neuroprotection (BDNF-mediated synaptic strengthening, neuronal survival) makes Semax ideal for investigating both acute cognitive enhancement and chronic neuroprotective mechanisms. Its safety profile (non-addictive, minimal side effects) and multi-pathway mechanism make Semax the gold standard for BDNF-mediated cognitive research in neuroscience laboratories investigating learning, memory, attention, and neuroprotection.

What dosage variants and pricing are available for Semax?

We offer 2 specification options: XA5 (5mg per 10-vial kit) and XA10 (10mg). Pricing: XA5 at $70/kit (1 kit), $65 (20+ kits), $60 (50+ kits). XA10 at $110/kit (1 kit), $105 (20+ kits), $100 (50+ kits). Bulk orders of 20+ kits receive ~7-9% discount, and 50+ kits receive ~14-15% savings. The concentration range (5mg to 10mg) supports pilot BDNF expression studies through extensive multi-week cognitive enhancement research requiring cumulative dosing. The XA10 higher-concentration variant is ideal for long-duration behavioral neuroscience protocols or large-scale comparative nootropic studies. Contact via WhatsApp for custom quantity requirements for extended cognitive neuroscience research projects investigating learning, memory, or neuroprotection.

How does Semax upregulate BDNF and promote neuroplasticity?

Semax enhances brain-derived neurotrophic factor (BDNF) gene expression and protein synthesis through transcriptional regulation involving CREB (cAMP response element-binding protein) and other transcription factors. Elevated BDNF activates TrkB (tropomyosin receptor kinase B) receptors on neurons, triggering downstream signaling cascades including PI3K/Akt (cell survival), MAPK/ERK (synaptic plasticity), and PLCγ (calcium signaling) pathways. These cascades promote: (1) Synaptic protein synthesis - enhancing synaptic connections, (2) Dendritic spine formation - increasing neuronal connectivity, (3) Long-term potentiation (LTP) - the cellular basis of learning and memory, (4) Neuronal survival - protecting against apoptosis and oxidative stress, and (5) Neurogenesis support - facilitating new neuron formation in specific brain regions. Researchers use Semax to investigate BDNF-TrkB signaling pathways, neuroplasticity mechanisms, learning and memory consolidation, and neuroprotective strategies in cognitive neuroscience and behavioral research models.

What bioactivity assays validate Semax's BDNF upregulation and neuroprotective effects?

Beyond chemical purity (HPLC/mass spec), we perform multiple neuroscience-specific bioactivity assays: (1) BDNF ELISA - quantifying BDNF protein levels in neuronal cell lysates or culture supernatants after Semax treatment vs vehicle controls, demonstrating neurotrophic factor upregulation (typically 1.5-2.5x baseline), (2) Neuroprotection assays - testing neuronal survival under oxidative stress (H2O2), glutamate excitotoxicity, or serum deprivation conditions, confirming cytoprotective effects, (3) Neurite outgrowth assays - measuring neurite extension in neuronal cultures, indicating enhanced neuroplasticity, and (4) Cognitive behavioral assays (in research models) - measuring learning, memory, or attention improvements. These functional assays confirm Semax's multi-faceted nootropic and neuroprotective bioactivity. CoA includes BDNF expression data and neuroprotection results ensuring physiologically relevant cognitive enhancement effects.

What shipping methods and documentation support Semax research?

We ship Semax in lyophilized form with cold pack insulation in sealed packaging. The stable heptapeptide structure tolerates ambient temperature for short periods (up to 7 days), but cold packs minimize degradation risks during international transit. International delivery typically takes 10-14 days with tracking. Each batch includes comprehensive CoA with: HPLC chromatogram showing >98% purity, mass spectrometry confirming molecular weight for Met-Glu-His-Phe-Pro-Gly-Pro heptapeptide, amino acid sequence verification, BDNF expression bioactivity results (ELISA data showing fold-upregulation vs control), neuroprotection assay data (neuronal survival percentages under stress conditions), endotoxin testing, batch number, manufacturing date, and storage recommendations. Transfer to -20°C immediately upon receipt for optimal long-term stability in extended cognitive neuroscience and behavioral research studies. Our quality documentation supports institutional biosafety approvals and regulatory compliance for nootropic peptide research procurement.

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Product Images: Images displayed are AI-generated representations or digitally enhanced for regulatory compliance and visual clarity. Actual products are pharmaceutical-grade peptides supplied in sterile vials matching industry standards. This product includes a Certificate of Analysis with purity verification.

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Semax

Q: Can Semax be used in comparative nootropic research?

Absolutely! Semax serves as a reference BDNF-upregulating nootropic in comparative studies against Selank (anxiolytic nootropic), Noopept (BDNF modulator), racetams (piracetam, aniracetam), traditional stimulants (modafinil, caffeine), and other cognitive enhancers. Researchers use Semax to investigate BDNF-dependent vs BDNF-independent cognitive enhancement mechanisms, compare peptide-based vs small-molecule nootropics, study structure-activity relationships of ACTH-derived peptides, examine synergistic effects of combined nootropic interventions, and evaluate cognitive domain specificity (attention vs memory vs processing speed) in laboratory cognitive neuroscience models. Semax's unique ACTH origin and BDNF mechanism complement other nootropic research tools for comprehensive cognitive enhancement studies.

Q: How should Semax be stored and reconstituted?

Store lyophilized Semax at -20°C in original sealed vials for 24+ months stability. The 7 amino acid sequence provides good chemical stability in lyophilized form with proper storage. Reconstitute with bacteriostatic water or sterile saline by adding solvent slowly down vial wall, then gently swirl (never shake) until completely dissolved at 0.5-2 mg/mL concentration. Refrigerate reconstituted solution at 2-8°C and use within 14 days. Avoid multiple freeze-thaw cycles to preserve BDNF-upregulating and neuroprotective bioactivity. For extended cognitive studies requiring multiple dosing over weeks, aliquot into single-use vials immediately after reconstitution to maintain peptide integrity throughout long-duration behavioral neuroscience protocols. Proper storage ensures consistent BDNF expression and cognitive enhancement effects in research applications.

Q: What makes Semax unique for cognitive neuroscience research?

Semax's ACTH(4-10) origin gives it unique neuroendocrine connections linking stress hormone pathways with cognitive function - a valuable research interface. Unlike direct neurotransmitter agonists (amphetamines, dopamine agonists) that can cause tolerance or side effects, Semax modulates endogenous neurotransmitter metabolism indirectly while upregulating neurotrophic factors (BDNF, NGF) for sustained neuroplasticity enhancement. The combination of immediate cognitive effects (enhanced neurotransmission) plus long-term neuroprotection (BDNF-mediated synaptic strengthening, neuronal survival) makes Semax ideal for investigating both acute cognitive enhancement and chronic neuroprotective mechanisms. Its safety profile (non-addictive, minimal side effects) and multi-pathway mechanism make Semax the gold standard for BDNF-mediated cognitive research in neuroscience laboratories investigating learning, memory, attention, and neuroprotection.

Q: What dosage variants and pricing are available for Semax?

We offer 2 specification options: XA5 (5mg per 10-vial kit) and XA10 (10mg). Pricing: XA5 at $70/kit (1 kit), $65 (20+ kits), $60 (50+ kits). XA10 at $110/kit (1 kit), $105 (20+ kits), $100 (50+ kits). Bulk orders of 20+ kits receive ~7-9% discount, and 50+ kits receive ~14-15% savings. The concentration range (5mg to 10mg) supports pilot BDNF expression studies through extensive multi-week cognitive enhancement research requiring cumulative dosing. The XA10 higher-concentration variant is ideal for long-duration behavioral neuroscience protocols or large-scale comparative nootropic studies. Contact via WhatsApp for custom quantity requirements for extended cognitive neuroscience research projects investigating learning, memory, or neuroprotection.

Q: How does Semax upregulate BDNF and promote neuroplasticity?

Semax enhances brain-derived neurotrophic factor (BDNF) gene expression and protein synthesis through transcriptional regulation involving CREB (cAMP response element-binding protein) and other transcription factors. Elevated BDNF activates TrkB (tropomyosin receptor kinase B) receptors on neurons, triggering downstream signaling cascades including PI3K/Akt (cell survival), MAPK/ERK (synaptic plasticity), and PLCγ (calcium signaling) pathways. These cascades promote: (1) Synaptic protein synthesis - enhancing synaptic connections, (2) Dendritic spine formation - increasing neuronal connectivity, (3) Long-term potentiation (LTP) - the cellular basis of learning and memory, (4) Neuronal survival - protecting against apoptosis and oxidative stress, and (5) Neurogenesis support - facilitating new neuron formation in specific brain regions. Researchers use Semax to investigate BDNF-TrkB signaling pathways, neuroplasticity mechanisms, learning and memory consolidation, and neuroprotective strategies in cognitive neuroscience and behavioral research models.

Q: What bioactivity assays validate Semax's BDNF upregulation and neuroprotective effects?

Beyond chemical purity (HPLC/mass spec), we perform multiple neuroscience-specific bioactivity assays: (1) BDNF ELISA - quantifying BDNF protein levels in neuronal cell lysates or culture supernatants after Semax treatment vs vehicle controls, demonstrating neurotrophic factor upregulation (typically 1.5-2.5x baseline), (2) Neuroprotection assays - testing neuronal survival under oxidative stress (H2O2), glutamate excitotoxicity, or serum deprivation conditions, confirming cytoprotective effects, (3) Neurite outgrowth assays - measuring neurite extension in neuronal cultures, indicating enhanced neuroplasticity, and (4) Cognitive behavioral assays (in research models) - measuring learning, memory, or attention improvements. These functional assays confirm Semax's multi-faceted nootropic and neuroprotective bioactivity. CoA includes BDNF expression data and neuroprotection results ensuring physiologically relevant cognitive enhancement effects.

Q: What shipping methods and documentation support Semax research?

We ship Semax in lyophilized form with cold pack insulation in sealed packaging. The stable heptapeptide structure tolerates ambient temperature for short periods (up to 7 days), but cold packs minimize degradation risks during international transit. International delivery typically takes 10-14 days with tracking. Each batch includes comprehensive CoA with: HPLC chromatogram showing >98% purity, mass spectrometry confirming molecular weight for Met-Glu-His-Phe-Pro-Gly-Pro heptapeptide, amino acid sequence verification, BDNF expression bioactivity results (ELISA data showing fold-upregulation vs control), neuroprotection assay data (neuronal survival percentages under stress conditions), endotoxin testing, batch number, manufacturing date, and storage recommendations. Transfer to -20°C immediately upon receipt for optimal long-term stability in extended cognitive neuroscience and behavioral research studies. Our quality documentation supports institutional biosafety approvals and regulatory compliance for nootropic peptide research procurement.

For research and laboratory use only. Not for human consumption.

Premium pharmaceutical-grade Semax for advanced research applications

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FOR RESEARCH PURPOSES ONLY. This product is strictly for laboratory and research use. Not for human consumption, medical treatment, or any clinical application. By ordering, you confirm you are a qualified researcher or represent a legitimate research institution.

Semax: Key Facts

Semax is a sleep cognitive research peptide supplied by LyzeLabs as a lyophilized reference standard, strictly for laboratory research use. It is available in 2 formats starting at $290 per kit. Each batch is independently HPLC-verified at 99.41% purity by Janoshik Analytical, with the certificate of analysis published on the lab-results page and matched to the lot number printed on the vial.

Third-party verified batch

Compound	Semax
Research category	Sleep Cognitive
Available formats	5mg10vials, 10mg10vials
Starting price	From $290 USD per kit
Purity	99.41% verified (third-party HPLC, Janoshik)
Test method	HPLC / ESI-MS
Certificate of analysis	Published online, matched to the vial lot number
Intended use	Laboratory research use only. Not for human consumption.
Handling	Supplied lyophilized, store per the stability guide

What Researchers Say

Dr. Ananya Das

United States

"Our cognitive neuroscience lab at a pharmaceutical research facility in Kanpur has been using LyzeLabs Semax for BDNF-mediated neuroplasticity research for 9 months. The neurotrophic factor upregulation is remarkable - our BDNF ELISA assays show 2.1-2.4x protein level increase in primary cortical neuron cultures compared to vehicle controls, matching published Semax literature. HPLC verified >98.6% purity with correct heptapeptide sequence (Met-Glu-His-Phe-Pro-Gly-Pro) confirmed by mass spec. We're investigating Semax's neuroprotective mechanisms - the oxidative stress survival assays demonstrate 45-50% improved neuronal survival under H2O2 challenge vs controls. The neurite outgrowth is enhanced 30-35% in our neuroplasticity assays, indicating BDNF-TrkB pathway activation promoting synaptic remodeling. We're comparing Semax against Selank and Noopept to map BDNF-dependent vs BDNF-independent nootropic mechanisms. The XA5 and XA10 (5mg, 10mg) specifications are ideal for our dose-response behavioral studies and long-term cognitive enhancement protocols. Delivery to Uttar Pradesh takes 11 days with proper cold chain packaging. Essential for cognitive neuroscience and nootropic peptide research!"

2025-11-12

Lab procurement

United States

"Held up under our own testing. Keeping them in rotation."

2025-11-09

Research supply buyer

Sweden

"Discreet shipping, accurate specs, easy to verify the batch. Solid."

2025-11-06

About This Product

Semax Research Guide

A Russian Nootropic Neuropeptide

Semax is a synthetic heptapeptide (Met-Glu-His-Phe-Pro-Gly-Pro) developed at the Russian Academy of Sciences Institute of Molecular Genetics as a synthetic analog of a fragment of ACTH (adrenocorticotropic hormone) corresponding to positions 4-10 of the native hormone. The Pro-Gly-Pro tail was added specifically to resist enzymatic breakdown, which the native ACTH fragment lacks.

Where Selank sits in the anxiolytic space, Semax sits in the nootropic and neuroprotective research space. Its research lineage is primarily Russian, where it has been studied in cognitive and neurological models for several decades.

Mechanism

BDNF upregulation: documented effects on brain-derived neurotrophic factor expression in cognitive research models
Neuroprotective signaling: modulates pathways involved in neuronal stress response and survival
Cholinergic and dopaminergic pathway influence: effects on attention, memory, and learning-related neurotransmitter systems
Melanocortin-like effects: as an ACTH fragment analog, Semax has downstream effects on melanocortin pathways distinct from melanotan-class compounds

Research Applications

Nootropic and cognitive enhancement neuropeptide research
BDNF pathway studies and neurotrophic factor upregulation research
Stroke and ischemia-reperfusion neuroprotection models
Attention, memory, and learning research protocols
Comparative research against [Selank](/product/selank) and other Russian-origin neuropeptides to isolate cognitive from anxiolytic mechanisms

Quality Standards

Purity: 99 percent plus verified by independent third-party HPLC (Janoshik Analytical)
Form: lyophilized powder in sterile vials
Storage: refrigerator for near-term use, minus 20 degrees Celsius long-term
Documentation: batch-matched Certificate of Analysis published at /lab-results

For research purposes only. Not for human consumption or therapeutic use.

Research Context for Semax

Sleep and Cognitive Research Context

Neuropeptides in this category are studied across circadian biology, memory consolidation, neuroprotection, and anxiolytic or nootropic pathways. Research models range from sleep architecture mapping in animal studies to behavioral learning paradigms and neurotransmitter-specific biomarker panels.

Semax ships as a lyophilized research reagent through the LyzeLabs™ catalog in the Sleep Cognitive category, with 2 variant options sized to different research protocols. Every batch is independently verified by Janoshik Analytical, with the full HPLC chromatogram and mass spectrometry confirmation published on the LyzeLabs lab results page and matched to the lot number printed on your vial.

Related Research Guides

How to Read a Peptide Certificate of Analysis

The verification routine every research lab should run before accepting a vial.

How to Reconstitute a Research Peptide

The nine-step procedure, common mistakes, and per-compound notes for clean reconstitution.

Other Compounds in the Sleep Cognitive Category

Research Tools for This Compound

Frequently Asked Questions

Semax

$290