Adamax is a synergistic peptide blend pairing Semax — a synthetic analog of ACTH(4-10) — with Selank, a heptapeptide derived from tuftsin. Researchers who buy Adamax Nasal Spray gain access to two well-studied neuropeptides that modulate cognition, stress response, and neuroplasticity through complementary pathways. The intranasal route bypasses the blood-brain barrier, delivering active compounds rapidly to central nervous system tissue for more efficient study of CNS pharmacology. For a comprehensive overview of neuropeptide research, see our Semax cognitive enhancement guide and Selank peptide research guide.
Detailed Mechanism of Action
To understand why researchers buy Adamax Nasal Spray, it helps to examine each component’s pharmacodynamic profile. Semax (MEHFPGP) is a synthetic heptapeptide derived from the N-terminal fragment of ACTH. It does not act on melanocortin receptors but instead potently upregulates brain-derived neurotrophic factor (BDNF) and nerve growth factor (NGF), both critical mediators of synaptic plasticity and neuronal survival.
Selank (TKPRPGP) is a synthetic derivative of tuftsin (Thr-Lys-Pro-Arg), an endogenous immunomodulatory tetrapeptide. Selank exerts anxiolytic effects by modulating GABAergic neurotransmission and normalizing the balance between inhibitory and excitatory signaling in the limbic system. It also increases enkephalin levels, contributing to its stress-response attenuation profile. Research teams who regularly buy Adamax Nasal Spray often cite the complementary mechanisms of both peptides as a key reason for choosing the blend over single-agent options.
The intranasal delivery format is pharmacokinetically significant. Nasal mucosa contains tight junctions that are more permeable to small peptides than the blood-brain barrier, allowing for rapid CNS exposure without systemic degradation. Enzymatic breakdown that typically reduces peptide half-life when administered by other routes is substantially diminished via nasal administration, making the 100 mcg per spray dosing format efficient for laboratory use. Researchers in neuroplasticity and cognition studies who buy Adamax Nasal Spray benefit from this delivery advantage in acute and subacute dosing protocols.
The combination also modulates the serotonergic system. Studies on Selank specifically have identified upregulation of serotonin transporter expression and increased 5-HT metabolism in rat brain tissue, providing a secondary mechanism for mood and anxiety regulation that complements Semax’s pro-BDNF activity. For deeper background on peptide mechanisms, see our complete guide to peptides and Semax vs Selank nootropic comparison.
Published Research on Semax and Selank
The scientific literature underpinning Adamax’s constituent peptides is extensive. Semenova et al. (2010, Neuropeptides) demonstrated that Semax administration in rats produced significant upregulation of BDNF mRNA in the hippocampus and frontal cortex within 24 hours. Dolotov et al. (2006, Doklady Biological Sciences) showed Semax increased NGF expression by 130–140% in olfactory bulb models, providing mechanistic support for its cognitive research applications. These findings are central to why researchers choose to buy Adamax Nasal Spray for neuroplasticity studies. See the PubMed record on Semax and BDNF for further reading.
For Selank, Zozulya et al. (2001, CNS Drug Reviews) published a comprehensive review of the peptide’s anxiolytic and nootropic properties, including data from double-blind human studies conducted in Russia, noting dose-dependent reductions in anxiety without sedation or motor impairment. Medvedev et al. (2014) further characterized Selank’s role in normalizing expression of serotonin transporter genes in peripheral blood cells of patients with anxiety disorders. The convergence of CNS activity and peripheral biomarker normalization makes the Selank component of Adamax particularly valuable in translational research designs. Researchers who want to buy Adamax Nasal Spray for anxiety modeling studies should review the Zozulya et al. CNS Drug Reviews article on Selank before designing experiments.
The Semax-Selank combination has been used in Russian clinical practice for over two decades, providing a uniquely well-characterized safety and pharmacology dataset compared to many other neuropeptides. For context on interpreting certificates of analysis for blended peptides, visit our COA reading guide.
Adamax vs Alternatives
| Feature |
Adamax (Semax + Selank) |
Semax Alone |
Selank Alone |
| Delivery |
Intranasal spray (100 mcg/spray) |
Nasal or injectable |
Nasal or injectable |
| BDNF / NGF Upregulation |
Yes (Semax component) |
Yes |
Minimal direct effect |
| Anxiolytic Activity |
Yes (Selank component) |
Minimal direct effect |
Yes |
| GABAergic Modulation |
Yes (Selank) |
No |
Yes |
| Serotonergic Activity |
Yes (Selank) |
No |
Yes |
| Cognitive Enhancement Model |
Dual mechanism |
Single mechanism |
Single mechanism |
| Research Literature Depth |
Extensive (both components) |
Extensive |
Extensive |
| PSPeptides Availability |
In stock — buy Adamax nasal spray now |
Available separately |
Available separately |
Reconstitution & Handling
Adamax Nasal Spray from PSPeptides is supplied as a lyophilized powder in a nasal delivery vial. To prepare a ready-to-use solution, researchers typically reconstitute with sterile saline (0.9% NaCl) or bacteriostatic water at a volume that achieves the target concentration per spray. For a 10 mg vial with 100 sprays, reconstitution with 1 mL of bacteriostatic water yields 100 mcg per 0.01 mL actuation — matching the labeled dosing format. For a step-by-step protocol, see our peptide reconstitution guide and bacteriostatic water guide.
When researchers buy Adamax Nasal Spray, they should handle the lyophilized powder carefully: avoid exposing it to moisture or light before reconstitution, use sterile technique during preparation, and label the reconstituted vial with date and concentration. Use a clean nasal spray actuator — do not repurpose applicators from unrelated compounds. For dosage calculation reference, use our peptide dosage calculator guide.
Storage & Stability
Lyophilized Adamax powder is stable at −20°C for up to 24 months when sealed and protected from light and moisture. After reconstitution, stability is maintained at 2–8°C for approximately 4 weeks; longer-term storage of reconstituted solution should be avoided. Do not freeze reconstituted peptide solutions as repeated freeze-thaw cycles degrade peptide integrity. Researchers who buy Adamax Nasal Spray should store unused portions promptly and monitor for turbidity or precipitation before each use. For comprehensive storage protocols, see our peptide storage guide and peptide degradation identification guide.
Certificate of Analysis
Each batch of Adamax Nasal Spray from PSPeptides is independently tested by a third-party analytical laboratory using high-performance liquid chromatography (HPLC) and mass spectrometry. The certificate of analysis confirms: peptide identity (both Semax and Selank), purity ≥ 99%, absence of harmful residual solvents, and accurate mass verification. A batch-specific COA is included with every order when you buy Adamax Nasal Spray from PSPeptides. To learn how to interpret HPLC and MS data on your COA, visit our guide to reading peptide COAs.
Why Researchers Choose PSPeptides
- US Manufactured: All PSPeptides products, including Adamax Nasal Spray, are manufactured domestically to rigorous quality standards.
- Third-Party Tested: Independent HPLC and mass spectrometry verification on every batch — not just spot testing.
- Fast Shipping: Free UPS 2nd Day Air on orders over $150; same-day dispatch on orders placed before 2 PM EST.
- Flexible Payments: Credit cards, Afterpay, Klarna, Apple Pay, and Google Pay accepted.
- 7-Day Support: Reach our research support team by email, phone, or text, 7 days a week.
- Verified Sourcing: Wondering how PSPeptides compares to other vendors? Read our best peptide companies 2026 review and how to choose a research peptide supplier guide.
Frequently Asked Questions
What is Adamax Nasal Spray and what peptides does it contain?
Adamax Nasal Spray is a blended neuropeptide research compound containing Semax and Selank. When you buy Adamax Nasal Spray from PSPeptides, each vial provides 10 mg total (100 sprays at 100 mcg per spray) in a convenient intranasal delivery format optimized for CNS pharmacology research.
Is Adamax Nasal Spray the same as buying Semax and Selank separately?
Functionally, Adamax combines both peptides in a pre-blended, ready-to-reconstitute format. Researchers who buy Adamax Nasal Spray get the convenience of a single SKU that delivers the complementary mechanisms of both Semax (BDNF/NGF upregulation) and Selank (GABAergic/serotonergic modulation) in precise equal-ratio sprays, eliminating the need to prepare and combine two separate solutions. Review the Semax vs Selank comparison for a deeper breakdown.
How should I store Adamax Nasal Spray after reconstitution?
After reconstitution, store reconstituted Adamax Nasal Spray at 2–8°C (standard refrigerator temperature) and use within 4 weeks. Do not freeze the reconstituted solution. Keep the vial upright, away from direct light, and tightly capped when not in use. For a full protocol, see the peptide storage guide.
What documentation is included when I buy Adamax Nasal Spray?
Every order includes a batch-specific certificate of analysis confirming peptide identity, purity ≥ 99%, and mass spectrometry verification for both the Semax and Selank components. COAs are generated by independent third-party laboratories and are accessible through your order documentation. See our guide to reading a peptide COA for help interpreting your results.
Is Adamax Nasal Spray legal to purchase for research?
Research peptides including those you buy via Adamax Nasal Spray are sold legally for laboratory and research use in the United States. They are not approved for human consumption, and PSPeptides products are sold exclusively for in-vitro and preclinical research purposes. For regulatory context, see our are research peptides legal in 2026 and research peptides vs prescription peptides guides.
Related Resources
All PSPeptides products are sold exclusively for laboratory and research use. Not intended for human consumption.
Adamax Nasal Spray in Nootropic and Cognitive Research Models
Researchers who buy Adamax Nasal Spray frequently deploy it in models examining working memory, spatial navigation, and executive function in rodent subjects. The BDNF upregulation from Semax supports long-term potentiation (LTP) mechanisms in the hippocampus — a cellular correlate of memory formation — while Selank’s anxiolytic profile reduces stress-induced performance decrements. This dual action makes the Adamax blend particularly suitable for studies requiring stable behavioral baselines, as anxious or hypervigilant subjects often confound cognitive testing data.
In water maze paradigms and radial arm maze designs, peptide pretreatment protocols that include buy Adamax Nasal Spray preparations have shown reproducible effects on acquisition speed and retention in published rodent studies. The intranasal delivery minimizes handling stress compared to injection-based protocols, providing cleaner behavioral data. Researchers also note that the nasal spray format allows for consistent repeat dosing in longitudinal designs without the tissue damage associated with chronic subcutaneous administration. For related research contexts, see our articles on peptides for sleep and recovery and peptides for immune support research.
Understanding the Semax Component in Depth
Semax (MEHFPGP) was originally developed at the Institute of Molecular Genetics in Russia in the 1980s as a stable synthetic analog of ACTH(4-10). Unlike full-length ACTH, Semax lacks adrenal activity, making it a cleaner tool for CNS-focused experiments. Its primary mechanism involves stimulation of TrkB receptors — the high-affinity receptor for BDNF — as well as indirect NGF secretion in glial cells. Researchers who want to buy Adamax Nasal Spray specifically for neuroprotection models benefit from Semax’s documented ability to reduce ischemia-related neuronal damage in stroke models (Romanova et al., 2006).
Semax also modulates dopaminergic transmission, with studies showing normalization of dopamine turnover in the striatum under stress conditions. This makes it a useful tool in addiction, motivation, and reward circuitry research. Its interaction with the melanocortin-4 receptor (MC4R) has been a subject of ongoing investigation, with some researchers postulating that Semax may exert some effects through this pathway in addition to its established BDNF/TrkB activity. For more background on peptide mechanisms, visit the peptide glossary and peptide half-life chart.
Understanding the Selank Component in Depth
Selank (Thr-Lys-Pro-Arg-Pro-Gly-Pro) was developed as a stable analog of tuftsin, a naturally occurring immunomodulatory peptide produced by the spleen. Tuftsin itself has a very short plasma half-life due to rapid degradation by serum enzymes. Selank’s proline-glycine-proline C-terminal extension substantially increases metabolic stability, giving it a research-useful half-life suitable for nasal spray delivery. Researchers who regularly buy Adamax Nasal Spray appreciate that Selank’s stability profile ensures consistent dosing reproducibility across experimental sessions.
Selank’s anxiolytic mechanism diverges from classical benzodiazepines: rather than binding the GABA-A receptor directly, it enhances the expression of GABA-A receptor subunits and modulates endogenous opioid peptide (enkephalin) concentrations. This produces anxiolytic effects without the sedation, tolerance development, or withdrawal phenomena associated with BZD receptor agonists. For research teams modeling anxiety disorders or studying GABA system pharmacology, the Selank component makes the case to buy Adamax Nasal Spray particularly compelling. Its immunomodulatory heritage from tuftsin also makes it relevant to neuroimmunological research designs examining CNS-immune crosstalk.
Research Applications in Neurological Disease Models
Beyond standard cognitive and anxiolytic research, researchers who buy Adamax Nasal Spray have applied it in translational disease models. The BDNF-elevating properties of Semax are particularly relevant to neurodegenerative research: low BDNF levels are consistently observed in Alzheimer’s disease, Parkinson’s disease, and major depressive disorder models. Augmenting BDNF signaling via Semax is a validated approach in preclinical neuroprotection studies.
Selank’s role in cytokine regulation — particularly its capacity to modulate IL-6, IL-1β, and TNF-α expression — makes the Adamax blend useful in neuroinflammation models. Elevated neuroinflammatory cytokines are implicated in multiple sclerosis models, traumatic brain injury research, and depression-linked neuroinflammation paradigms. Researchers working in these disease areas who buy Adamax Nasal Spray gain access to both neuroprotective (Semax) and anti-neuroinflammatory (Selank) activity in a single compound. For related reading, see our peptides for gut health and best peptides for longevity research guides to understand how these neuropeptides fit into broader research contexts.
Dosing Considerations for Research Protocols
When planning research protocols that include buy Adamax Nasal Spray formulations, researchers should account for the 100 mcg per spray delivery format. Most published neuropeptide intranasal research uses dosing ranges equivalent to 100–600 mcg per session for rodent subjects, with protocols varying by study design and endpoint. The 10 mg total content of each PSPeptides vial provides up to 100 individual spray actuations, making it practical for both acute single-session studies and multi-week longitudinal designs.
Researchers designing dose-response studies who buy Adamax Nasal Spray should note that the Semax and Selank components are delivered in fixed ratio with each spray. If independent dose titration of each peptide is required, researchers may prefer separate Semax and Selank formulations. For a full comparison of delivery routes and dosing strategies, see our subcutaneous vs intramuscular injection guide and peptide cycling guide. For questions about stacking peptide blends, consult our peptide stacking guide.
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Neurological Research Peptides
Neurological Research Peptides
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Neurological Research Peptides