Selank Purity: 1318 Lab Tests Across 600 Identified Manufacturers
71 studies on Selank curated from PubMed, ClinicalTrials.gov, and EuropePMC. Updated daily.
Bottom line: TitrateLab currently tracks 1,318 published third-party lab tests of Selank across 600 identified manufacturers. Among reports with a positive numeric purity result, the average is 99.66%. Within this published corpus, 1 positive purity result was below 90%, and 34 reports showed measured quantity more than 10% below the label claim. These are batch-level observations, not guarantees of product identity, safety, or vendor quality.
Selank average prices
As of 2026-09-03, vendor-blind retail asking-price averages for the US delivery market, calculated from the same in-stock exact-strength cells as the Peptide Price Index. Shipping is excluded.
| Strength | Average / vial | Observed range / vial | Average / mg | Coverage |
|---|---|---|---|---|
| 5 mg | $6.17 | $5.50–$6.50 | $1.23 | 3 sources · 3 offers |
| 10 mg | $9.17 | $5.50–$13.00 | $0.92 | 6 sources · 6 offers |
| 30 mg | $16.00 | $16.00–$16.00 | $0.53 | 1 source · 1 offer |
Asking prices are not manufacturing cost and do not establish product equivalence, quality, safety, or legality. The refresh date is the catalog build date; individual source observation dates are not available in this snapshot. View full price methodology →
We tested 1318 Selank batches across 600 identified manufacturers
Independent certificate-of-analysis evidence from third-party labs — the data behind the studies. Updated as new COAs are verified. Read the full grey-market analysis →
Within that total, 314 batches have unresolved manufacturer identity. They remain in corpus-level lab evidence and are excluded from named-manufacturer rankings.
Top 3 vendor evidence profiles for Selank
Eligible vendors have at least 2 deduplicated tests and 2 classifiable identity observations. Rank uses the 95% lower confidence bound on clean identity results; mean positive purity and test count break ties. Missing measurements are not passes. Exact-zero/not-detected and explicit wrong-compound markers count once per adverse certificate. This describes tested batches, not every product or shipment, and is not an endorsement.
| Rank | Manufacturer | Tests | Avg positive purity | Identity adverse results | |
|---|---|---|---|---|---|
| #1 | 23 | 99.65% | 0 of 19 (0.0%) 0 0% / not detected · 0 wrong compound · 4 unclassified | Reveal with Pro → | |
| #2 | 14 | 99.67% | 0 of 13 (0.0%) 0 0% / not detected · 0 wrong compound · 1 unclassified | Reveal with Pro → | |
| #3 | 12 | 99.77% | 0 of 12 (0.0%) 0 0% / not detected · 0 wrong compound | Reveal with Pro → |
Manufacturer identities are included with Pro. Batch counts and lab measurements remain visible.
Recent certificates: #101102 (99.57%) · #100439 (99.82%) · #100818 (99.96%) · #100927 (99.92%) · #101052 (99.92%) · #101207 (99.96%)
Selank studies and clinical research
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Using Nutrient Experiments to Set Water Quality Limits in Streams
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Selank's Chemical Identity: A Nootropic Peptide Profiled
Precise chemical characterization is fundamental for any therapeutic agent, ensuring reproducibility in research and safety in potential clinical applications. Understanding Selank's exact molecular structure allows f…
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Telephone Therapy for Depression: Does Supportive Mail Boost Effectiveness?
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High Altitude Hypoxia's Acute Impact on Lowlander Cognitive Function Explored
Understanding the acute cognitive impacts of high-altitude hypoxia is crucial for safety and performance in various contexts, including mountaineering, military operations, and occupational tasks in high-altitude envi…
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Brain Stimulation for Dyslexia: Comparing tDCS and tRNS Efficacy in Children
The successful demonstration of efficacy for either tDCS or tRNS could represent a significant breakthrough in the management of developmental dyslexia. If proven effective, these non-invasive brain stimulation techni…
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Selank Restores Brain Function and Neurotransmitters After Prenatal Hypoxia
This study provides compelling and quantitative evidence that Selank possesses the capability to effectively compensate for the long-lasting negative effects of antenatal hypoxia on both integrative brain activity and…
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Selank Reduces Dopamine Overactivity in Mice, Opioid System Implicated
This research highlights Selank's potential as a novel anxiolytic or antipsychotic agent that can modulate dopamine system activity without directly binding to dopamine receptors, potentially offering a therapeutic pr…
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New Superconductor KOs2O6 Exhibits Robust, Uniform Superconductivity
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Selank and Metabolites Protect Stomach Lining from Ulcers in Rats
This research provides compelling evidence for the anti-ulcer properties of Selank, suggesting its potential beyond its known anxiolytic (anti-anxiety) effects. The fact that its metabolites also contribute to this pr…
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Selank Restores Brain Function and Neurotransmitter Balance After Antenatal Hypoxia
This study provides compelling evidence that Selank holds significant promise as a therapeutic agent for addressing the long-term neurological consequences of antenatal hypoxia. The ability to correct deficits in sens…
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Selank Peptide Matches Medazepam for Anxiety, Adds Anti-Asthenic Benefits
This research highlights Selank's potential as a novel therapeutic agent for Generalized Anxiety Disorder and neurasthenia, offering a dual benefit of anxiety reduction alongside anti-fatigue and psychostimulant effec…
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Selank Restores Learning and Memory After Brain Noradrenergic Damage in Rats
This research highlights Selank's significant potential as a neuroprotective and cognitive-enhancing agent, particularly in conditions involving noradrenergic system dysfunction. Given that cognitive deficits are a ha…
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Selank Shows Immunomodulatory Effects in Patients with Anxiety and Depression
These findings suggest that Selank possesses unique immunomodulatory properties, acting as a novel regulator of the immune response. This dual effect on IL-6 gene expression and protein concentration, alongside its im…
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Selank Peptide Shows Promise Against Genetic and Stress-Induced Depression in Animal Models
These findings are highly significant as they demonstrate Selank's broad efficacy against both genetically-based and situation-provoked symptoms of depression and anxiety. Its ability to act as an anxiolytic and antid…
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Selank Restores Cognitive Function After Early Brain Damage in Rats
This research highlights the significant potential of Selank as a therapeutic agent for cognitive impairments resulting from early-life neurological damage. The ability of Selank to restore complex cognitive functions…
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Glyproline Distribution: How Administration Route Affects Tissue Delivery
This research provides critical and actionable insights into the pharmacokinetics of glyprolines, underscoring that the chosen route of administration profoundly dictates their bioavailability to key target organs suc…
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Selank Heptapeptide Shows Long-Term Cognitive and Emotional Benefits in Stressed Monkeys
This research provides compelling evidence for Selank's potential as a broad-spectrum therapeutic agent for psychoemotional disturbances. Its ability to induce long-term compensation of both behavioral and cognitive d…
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Selank Differentially Modulates Brain Neurotransmitters in Two Mouse Strains
This research provides crucial insights into the pharmacogenomic variability of peptide therapeutics, demonstrating how genetic background can profoundly influence drug efficacy and mechanism of action. Understanding …
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Neuropeptides MIF and Selank Show Promise in Experimental Hemorrhagic Stroke
This study provides compelling evidence that MIF and Selank possess significant neuroprotective and anti-inflammatory properties in the context of hemorrhagic stroke. The observed improvements in neurological function…
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Selank Peptide Boosts Brain Serotonin Metabolism in Rats with Depleted Levels
This research underscores selank's potential as a promising therapeutic agent for conditions characterized by decreased serotonin metabolism. The observed ability of selank to rapidly enhance 5-HT metabolism in the br…
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Selank Peptide Shows Potent Antiviral Activity Against Influenza Virus
These findings highlight Selank's potential as a novel antiviral agent, particularly for influenza prevention. The ability of Selank to modulate the immune response by selectively upregulating IFN-alpha suggests a tar…
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Selank Peptide Enhances Memory Stability and Serotonin Metabolism in Rats
This research provides compelling evidence that Selank acts as a potent nootropic agent, significantly enhancing long-term memory stability. The observed modulation of serotonin metabolism offers a plausible mechanism…
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Reduced Brain Wave Synchrony Found in Stable Bipolar Disorder Patients
This research provides compelling evidence that altered long-distance neural communication, specifically within the gamma frequency band, is a persistent neurobiological feature of bipolar disorder, even when patients…
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Selank Peptide Modulates Inflammation Genes in Mouse Spleen
This research provides compelling evidence that Selank possesses potent immunomodulatory properties, extending beyond its known neurological effects, by directly influencing the transcriptional activity of key inflamm…
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Selank and Its Fragments Modulate Immune Gene Expression in Mice
This research significantly advances our understanding of Selank's mechanism of action, particularly its immunomodulating effects at the genetic level. Identifying Gly-Pro as a key pharmacophor for these effects opens…
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Noopept and Selank Boost Brain Inhibition in Hippocampus, Enhancing Synaptic Activity
This study provides a crucial mechanistic understanding of how Noopept and Selank exert their nootropic and anxiolytic effects by enhancing inhibitory neurotransmission in the hippocampus. By demonstrating that these …
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Opioid System Critically Modulates Selank's Anti-Anxiety Effects in Mice
This research identifies the enkephalin-opioid system as a critical modulator of Selank's anxiolytic actions, revealing a new dimension to its mechanism within the central nervous system (CNS). Understanding this intr…
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Selank Modulates Brain Carboxypeptidase Activity, Potentially Affecting Neuropeptides
This research provides a potential biochemical mechanism for Selank's known anxiolytic and nootropic effects. By modulating the activity of carboxypeptidases, Selank could directly influence the production and availab…
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Selank Peptide Protects Against Memory Loss in Rats by Counteracting Protein Synthesis Blockade
This research highlights Selank's potential as a promising therapeutic agent for cognitive enhancement and the treatment of memory impairment. Given its ability to counteract deficits caused by protein synthesis inhib…
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Selank Modulates Inflammation Genes with Distinct Temporal Dynamics
This research highlights Selank's potent and time-dependent immunomodulatory properties, specifically its ability to rapidly downregulate key pro-inflammatory gene expression. Understanding these temporary dynamics is…
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Selank Significantly Alters Gene Expression in Rat Hippocampus, Boosting Memory Potential
This research provides crucial molecular insights into how Selank exerts its nootropic effects, linking its action to fundamental cellular processes like ion homeostasis and membrane protein function. Understanding th…
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Peptide Selank Reduces Anxiety and Pain During Alcohol Withdrawal in Rats
This research highlights Selank as a promising anxiolytic peptide with potential to specifically alleviate the distressing symptoms of Alcohol Withdrawal Syndrome (AWS). The ability of Selank to reduce both anxiety an…
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Selank Peptide Shows Lasting Anxiety Relief Compared to Phenazepam
This research significantly extends therapeutic possibilities for managing anxiety disorders by introducing Selank as a potentially superior alternative to traditional anxiolytics. The peptide's prolonged anxiolytic e…
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Periodized Strength Training Outperforms Non-Periodized for Early Muscle Gains
This study provides compelling evidence that periodized strength training is more effective than non-periodized training for eliciting early adaptations in both strength and muscle hypertrophy in recreational males. T…
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Selank Shows Promise for Optimizing Anxiety Disorder Treatment
This research is significant because it suggests Selank could provide a novel and effective option for managing anxiety disorders, potentially offering a better side-effect profile and improved tolerability compared t…
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Selank Peptide's Effects Vary by Delivery Method and Mouse Strain
This study underscores the critical importance of administration route and genetic background in determining the pharmacological profile and efficacy of peptide therapeutics like Selank. The observed differences in on…
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Selank Peptide Modulates Brain Genes Linked to Anxiety and Stress
This research provides crucial mechanistic insights into how Selank exerts its anxiolytic and neuroprotective effects by directly modulating gene expression within the GABAergic system. Understanding these specific ge…
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Novel Ligands Control Metal Geometry for Enhanced Peptide Therapeutics
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Selank Reduces Alcohol-Induced Restlessness and Addiction Behaviors in Mice
The study revealed that Selank at 0.3 mg/kg effectively prevented the development of ethanol-induced hyperlocomotion, demonstrating a clear inhibitory effect on this stimulant behavior. This effect was similar to that…
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Selank Peptide Significantly Boosts Diazepam's Anti-Anxiety Effects in Stressed Rats
This study provides compelling evidence that Selank can act as an effective adjunct therapy, significantly enhancing the anxiolytic effects of traditional benzodiazepines like diazepam. This synergistic interaction co…
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GABA, Selank, and Olanzapine Alter Brain Cell Gene Expression
This research provides crucial insights into the molecular mechanisms by which GABA, Selank, and Olanzapine influence GABAergic neurotransmission, highlighting their diverse pharmacological profiles. The discovery tha…
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Selank Boosts Brain's Inhibitory Signals in Rat Hippocampus
This research provides crucial insights into the neurobiological mechanisms underlying Selank's known anxiolytic (anti-anxiety) properties. By specifically boosting inhibitory signals in the hippocampus, a brain regio…
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Peptides Semax and Selank Modulate Behavior in Parkinson's Rat Model
This research highlights the potential of Selank as a therapeutic agent for managing non-motor symptoms, specifically anxiety, in Parkinson's disease, even in the presence of significant neurodegeneration. The fact th…
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Selank Protects Rat Liver from Stress-Induced Damage and Oxidative Stress
This study provides compelling evidence that Selank possesses significant hepatoprotective and antioxidant properties, effectively shielding the liver from the damaging effects of both acute and chronic restraint stre…
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Glyproline Peptides, Including Selank, Show Potent Anticoagulant Effects in Rats
The identification of potent anticoagulant effects from glyproline peptides, particularly Selank, represents a significant step towards developing novel antithrombotic agents. Current anticoagulants often come with a …
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Roche cobas hrHPV Test Performs Well Across Common Pap Test Platforms
This study provides crucial evidence that the Roche cobas hrHPV test maintains robust performance across the two most common liquid-based Pap test platforms, ThinPrep and SurePath. This consistency is vital for labora…
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Selank Peptide's Molecular Secrets Unlocked for Anxiety Relief
This research significantly advances our understanding of Selank's mechanism of action, highlighting its potential as a novel peptide-based anxiolytic with a favorable molecular profile. By modulating both GABAergic a…
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Organic Turkeys in Germany Show Significant Foot Pad Dermatitis Prevalence
This research is pivotal for enhancing animal welfare standards and sustainability within the organic poultry sector. By quantifying the extent of foot pad dermatitis, the study provides actionable data for farmers, v…
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Synthesizing Novel Bimetallic Isoselenocarbonyl Complexes Through Salt Elimination Reactions
This research significantly expands the synthetic toolbox for creating bimetallic complexes featuring the unique isoselenocarbonyl ligand. The successful structural characterization of three new complexes (4, 5, and 7…
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Selank Restores Gut Microbiota Balance in Rats Under Chronic Stress
This research highlights Selank's potential as a therapeutic agent for managing stress-induced gut dysbiosis, which is increasingly recognized as a contributor to various health issues, including mental health disorde…
Research tools
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