For broader research context on nootropic compounds, including comparative stacks, cycling considerations, and interaction notes, see the Complete Nootropic Cheat Sheet.
What Is Selank?
Selank is a synthetic heptapeptide combining the tuftsin tetrapeptide (Thr-Lys-Pro-Arg) — a naturally occurring immunopeptide — with an additional Pro-Gly-Pro sequence that confers stability and nootropic activity. Developed at the Institute of Molecular Genetics of the Russian Academy of Sciences, Selank has been studied clinically in Russia for generalized anxiety disorder and demonstrates a unique combination of anxiolytic, nootropic, and immunomodulatory effects.
Anxiolytic Mechanism
Selank's anxiolytic effects are mediated through multiple pathways: it modulates GABAergic transmission (without direct GABA-A receptor agonism like benzodiazepines), increases enkephalin degradation enzyme activity, and normalizes serotonin metabolism in key limbic structures. Crucially, it produces anxiolysis without sedation, cognitive impairment, dependence, or withdrawal.
Nootropic, BDNF, and Immune Effects
Selank stimulates BDNF expression in the hippocampus and frontal cortex — contributing to improvements in memory consolidation, learning, and cognitive clarity documented in clinical studies. Its tuftsin component provides immunomodulatory activity: enhancing natural killer cell activity, macrophage phagocytosis, and IL-2 production. This dual anxiolytic-immunostimulant profile makes it relevant for stress-induced immunosuppression, where anxiety and impaired immune function co-occur.
Quick Reference
Member reference tables summarize the compound's research parameters.
Research Indications
Research Protocols
As reported in cited literature and research-community logs (see Research Citations below), not a personal dosing recommendation.
This member section describes parameters reported in the research literature.
Peptide Interactions
This member section summarizes reported compound interactions and evidence limitations.
Reported Research Time Points
This member section summarizes reported research time points.
Safety Notes
Included for harm-reduction awareness only, in the event this compound is encountered outside its labeled research use. Inclusion here does not imply RUO Codes endorses, recommends, or instructs human use.
This member section discusses research safety considerations and uncertainties.
Quality Indicators
Research Citations
- GABAergic Neurotransmission Gene Expression (2016)
Rat frontal cortex | 300 μg/kg | Real-time PCR analysis - BDNF Expression Enhancement Study (2010)
Rat hippocampus | 250-500 μg/kg | 24-hour measurement - Generalized Anxiety Disorder Clinical Trial (2008)
Human subjects | GAD and neurasthenia | Multi-week treatment - Memory Consolidation Enhancement (2007)
Rat models | Learning paradigms | Head-to-head with Piracetam - Functional Connectomic Approach to Studying Selank and Semax Effects
Panikratova YR, Lebedeva IS, Sokolov OY, 2020, Dokl Biol Sci - Selank, a Peptide Analog of Tuftsin, Attenuates Aversive Signs of Morphine Withdrawal in Rats
Konstantinopolsky MA, Chernyakova IV, Kolik LG, 2022, Bull Exp Biol Med - Selank, Peptide Analogue of Tuftsin, Protects Against Ethanol-Induced Memory Impairment by Regulating of BDNF Content in the Hippocampus and Prefrontal Cortex in Rats
Kolik LG, Nadorova AV, Antipova TA, 2019, Bull Exp Biol Med - The optimizing action of the synthetic peptide Selank on a conditioned active avoidance reflex in rats
Kozlovskii II, Danchev ND, 2003, Neurosci Behav Physiol - GABA, Selank, and Olanzapine Affect the Expression of Genes Involved in GABAergic Neurotransmission in IMR-32 Cells
Filatova E, Kasian A, Kolomin T, 2017, Front Pharmacol