What Feelings Does Selank Evoke?
Most people using Selank describe its action as a state of greater mental calm, reduced tension, and improved stress management, rather than a feeling of sedation or euphoria. Human studies have shown that Selank induces anxiolytic effects while also exhibiting antifatigue properties and mild psychostimulating effects. This suggests that in some individuals, it may improve clarity of thought and reduce mental fatigue while simultaneously alleviating anxiety [1].
Unlike traditional sedatives, Selank generally does not cause pronounced drowsiness or impairment of cognitive function. Subjective sensations are often described as „calm alertness” – a state between relaxation and maintaining full concentration [1,2].
Does Selank work immediately?
Selank does not appear to act immediately in the same way as fast-acting benzodiazepines. Some individuals report feeling calmer shortly after administration, particularly with nasal preparations, however, controlled studies suggest that its effects may develop gradually with repeated administration [1,2].
Experimental data indicate that Selank affects neurotransmitter systems, gene expression and neurotrophic pathways. These are biological processes that likely occur gradually rather than immediately [2,3].
Does Selank Cause a „High”?
Currently, there is no evidence to suggest that Selank causes euphoria, intoxication, or a psychoactive „high.” In human studies, Selank is described as a peptide with anxiolytic and cognitive-enhancing properties, rather than a recreational substance [1].
Available data also suggest that Selank does not exhibit many characteristics typical of substances of abuse, such as strong sedation, dependence, or intoxication [1,2].
Is Selank dangerous?
Current research suggests that Selank has a favourable safety profile in both animal and human studies. Clinical trials generally indicate good tolerability and a lack of many adverse effects typical of conventional anxiolytic medications [1].
However, it should be emphasised that data concerning humans remain limited, and long-term safety studies have not yet been conducted. While current evidence does not suggest significant risks, further research is needed to draw definitive conclusions.
Is Selank effective?
Published human studies suggest that Selank may be effective in relieving symptoms associated with anxiety and stress. In a randomised trial conducted on patients with generalised anxiety disorder and neurasthenia, Selank demonstrated an anxiolytic effect comparable to medazepam, while simultaneously reducing feelings of fatigue and mental weakness [1].
Animal studies further confirm its anxiolytic profile through mechanisms related to GABA receptor modulation, enkephalin metabolism regulation, and influence on neurotrophic pathways [2,4].
Can Selank be used daily?
In several clinical studies, Selank has been administered repeatedly for specific treatment periods and has demonstrated good tolerability [1]. However, there are currently no long-term clinical studies defining the optimal daily dosing regimen or evaluating the effects of prolonged, continuous administration.
Due to the limited amount of data, it is not currently possible to determine the ideal duration or frequency of daily use.
Can Selank be used on an as-needed basis?
Selank's anti-anxiety properties mean some people consider using it during periods of increased stress or anxiety. However, controlled studies have primarily evaluated multiple-dose regimens rather than occasional or „as-needed” use [1].
Therefore, although intermittent use may theoretically be possible, there is currently a lack of studies to determine whether it offers comparable effects to regular administration.
Can Selank Be Administered Via Injection?
Yes. Selank can be prepared for administration via injection, and injectable preparations are available from some peptide suppliers. However, most scientific literature concerns Selank administered nasally, rather than in injectable form [2,3].
Currently, there are no robust clinical studies directly comparing Selank administered via injection and intranasally, nor evidence indicating a superiority of one route of administration over the other.
How is Selank Administered?
Most published studies have used Selank intranasally. This route of administration was chosen because it may facilitate the peptide's access to the central nervous system via the olfactory and trigeminal nerve pathways, while bypassing degradation in the gastrointestinal tract [2,3].
Although there are also injectable preparations, nasal administration remains the best-researched method and currently has the strongest scientific evidence.
Does Selank Nasal Spray Work?
The majority of evidence supporting Selank's biological activity comes from studies using the intranasal route of administration. Human and animal studies have demonstrated effects on anxiety, neurochemical regulation, gene expression, and brain-derived neurotrophic factor (BDNF) expression following intranasal administration [1–3].
Although large-scale clinical trials are still needed, nasal Selank is currently the form with the largest amount of scientific data supporting its biological effect.
Does Selank affect libido?
Currently, there are no clinical trials that directly assess the impact of Selank on sexual function or libido.
Because anxiety and chronic stress can negatively impact sexual well-being, some individuals may experience an indirect improvement in libido if their anxiety symptoms decrease. However, there is no evidence that Selank directly increases or decreases libido.
Does Selank Lower Inhibitions?
Selank exhibits an anxiolytic effect without causing pronounced sedation or cognitive impairment, which are often observed with many traditional anxiolytic drugs [1].
Currently, there is no evidence to suggest that Selank causes disinhibition, impulsivity, or behavioural disturbances similar to those observed after alcohol or certain sedatives.
Does Selank work like Diazepam?
Human studies have shown that Selank's anxiolytic efficacy was comparable to medazepam, which belongs to the benzodiazepine group [1]. At the same time, researchers noted that Selank exhibited anti-fatigue and mildly psychostimulatory properties and did not cause many of the typical benzodiazepine sedative effects.
Therefore, even though Selank may reduce anxiety comparably to diazepam in some individuals, the subjective feelings experienced after its use seem to differ.
Does Selank work like a benzodiazepine?
Not entirely. Although Selank affects GABAergic signalling and exhibits anxiolytic effects, its effects differ from those of traditional benzodiazepines [2].
Current evidence suggests that Selank may alleviate anxiety with less sedation, muscle relaxation, and cognitive impairment than classical benzodiazepines.
What can Selank help with?
The strongest scientific evidence relates to Selank's potential role in reducing anxiety and modulating stress responses. Research also suggests possible benefits linked to cognitive functions, neuroprotection, BDNF regulation, and broader modulation of neurochemical processes [1–4].
Many of these potential applications, however, remain in the research phase and require further clinical studies.
Is Selank a Nootropic?
Selank is often classified as a nootropic peptide, as experimental studies suggest its potential impact on cognitive function, neuroplasticity, and stress resistance [2,3].
In contrast to traditional nootropics, which primarily focus on enhancing attention or memory, the cognitive effects of Selank may arise indirectly from its anti-anxiety and neuroregulatory actions.
Is Selank a peptide?
Yes. Selank is a synthetic heptapeptide composed of seven amino acids with the sequence:
Thr-Lys-Pro-Arg-Pro-Gly-Pro [5].
It has been developed as an analogue of the peptide tuftsin and is being investigated for its anxiolytic, neuroregulatory, and immunomodulatory properties.
Disclaimer
The content is for educational and informational purposes only and should not be interpreted as medical advice, diagnosis, treatment, or professional medical recommendations. Selank has not been approved by the US Food and Drug Administration (FDA) or the European Medicines Agency (EMA) for the treatment of anxiety, cognitive disorders, or any other condition. Most of the available data comes from preclinical studies and a limited number of human trials. Further, well-designed clinical studies are needed to better determine the efficacy, safety, and long-term effects of Selank.
References
[1] Zozulia, A. A., Neznamov, G. G., Siuniakov, T. S., Kost, N. V., Gabaeva, M. V., Sokolov, O. Y., Serebriakova, E. V., Siranchieva, O. A., Andriushenko, A. V., Telesheva, E. S., Siuniakov, S. A., Smulevich, A. B., Myasoedov, N. F., & Seredenin, S. B. (2008). Efficacy and possible mechanisms of action of a new peptide anxiolytic Selank in the therapy of generalised anxiety disorders and neurasthenia. The Korsakov Journal of Neurology and Psychiatry, 108(4), 38-48. https://pubmed.ncbi.nlm.nih.gov/18454096/
[2] Vyunova, T. V., Andreeva, L., Shevchenko, K., & Myasoedov, N. F. (2018). Peptide-based anxiolytics: The molecular aspects of heptapeptide Selank biological activity. Protein and Peptide Letters, 25(10), 914-923. https://doi.org/10.2174/0929866525666180925144642
[3] Levitskaya, N. G., Andreeva, L. A., Mezentseva, M. V., Shapoval, I. M., Podchernyaeva, R. Y., Shcherbenko, V. E., Potapova, L. A., Russu, L. I., Ershov, F. I., & Myasoedov, N. F. (2010). Intranasal administration of the peptide Selank regulates BDNF expression in the rat hippocampus in vivo. Doklady Biological Sciences, 431, 79–82.
[4] Zozulya, A. A., Kost, N. V., Sokolov, O. Y., Gabaeva, M. V., Grivennikov, I. A., Andreeva, L. N., Zolotarev, Y. A., Ivanov, S. V., Andryushchenko, A. V., Myasoedov, N. F., & Smulevich, A. B. (2001). The inhibitory effect of Selank on enkephalin-degrading enzymes as a possible mechanism of its anxiolytic activity. Bulletin of Experimental Biology and Medicine, 131, 315–317. https://doi.org/10.1023/A:1017979514274
[5] PubChem. (2026). Selank (CID: 11765600). National Centre for Biotechnology Information. https://pubchem.ncbi.nlm.nih.gov/compound/Selank