Selank
GABAergic Modulation & Anxiolytic Neuropeptide
What is Selank?
Selank is a synthetic heptapeptide developed in Russia at the Institute of Molecular Genetics of the Russian Academy of Sciences. It is a modified analog of tuftsin, a naturally occurring immunomodulatory peptide fragment of the antibody molecule; a short proline-glycine-proline extension was added to the tuftsin sequence to improve stability against enzymatic breakdown. Because of its tuftsin lineage, Selank is studied not only as a neuroactive peptide but also for reported effects on immune signaling. In the Russian research literature it is most often described as an anxiolytic (anti-anxiety) compound with additional nootropic, or cognition-supporting, characteristics.
Proposed mechanisms in the preclinical literature focus on the GABAergic system and on neurotrophic signaling. Studies suggest Selank may modulate GABA-related neurotransmission and influence the balance of monoamines such as serotonin, which researchers have linked to its reported calming effects in animal models. Other work has examined effects on brain-derived neurotrophic factor (BDNF) and on the expression of genes associated with neuroplasticity, as well as antioxidant and neuroprotective readouts in stress models. Some investigators have also explored the peptide's influence on enkephalin metabolism and immune cytokines, reflecting its dual neuro-immune heritage. These findings collectively position Selank as a subject of interest in anxiety, mood, and cognition research.
A key caveat is that the Selank evidence base is heavily concentrated in Russian preclinical and small clinical studies, and it has not been the subject of large, independently replicated Western trials. It is not an approved medication outside of that specific regulatory context, and the strength and generalizability of its reported effects remain uncertain. Findings from animal models and limited human studies should be treated as preliminary. Selank is offered strictly for laboratory research and educational purposes only; nothing here is medical advice or intended to support human use.
Molecular data
Mechanism of action
In preclinical research, Selank is associated with the following pathways and targets:
Research highlights
- Modulates GABAergic transmission for anxiolytic effects
- Upregulates BDNF, supporting neuroplasticity and memory
- Demonstrates neuroprotective properties in oxidative stress models
- Well-tolerated with minimal side effects in preclinical studies
Frequently asked questions
What is Selank and what is it studied for?
Selank is a synthetic heptapeptide analog of the immune peptide tuftsin, developed in Russia. In research it is studied primarily as an anxiolytic (anti-anxiety) peptide with reported nootropic and neuroprotective properties. Most of the evidence comes from Russian preclinical and small clinical studies rather than large international trials.
How is Selank thought to work?
Preclinical research points to modulation of the GABAergic system and effects on monoamine neurotransmitters such as serotonin, which are associated in animal models with its calming effects. Studies have also examined effects on BDNF, neuroplasticity-related gene expression, and enkephalin metabolism. These are proposed mechanisms from laboratory work, not confirmed clinical effects.
How is Selank different from Semax?
Both are Russian-developed heptapeptides studied for brain-related effects, but they have different origins and emphases. Selank is derived from the immune peptide tuftsin and is studied mainly as an anxiolytic, whereas Semax is derived from the ACTH(4-10) hormone fragment and is studied more for cognitive enhancement and neuroprotection. Their sequences and proposed mechanisms differ accordingly.
Is Selank the same as a benzodiazepine?
No. Selank is a peptide, not a benzodiazepine, and does not share their chemical structure. While some research describes anxiolytic-like effects via the GABAergic system, this is studied in preclinical models and should not be equated with the pharmacology or clinical use of approved anti-anxiety medications.
Is Selank approved and well-validated?
Selank's research base is largely limited to Russian preclinical and small clinical studies and has not been broadly replicated in large Western trials. It is not an approved medication in most jurisdictions. It is supplied for laboratory research and educational purposes only, and none of this information is medical advice or guidance for human use.
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For research and educational purposes only. Selank is not approved for human use by any regulatory authority, and nothing on this page constitutes medical advice, diagnosis, or treatment. Research findings referenced here are predominantly preclinical.