Selank

Selank is a synthetic heptapeptide, chemically the tuftsin fragment Thr-Lys-Pro-Arg extended with the tripeptide Pro-Gly-Pro, and it is also referenced in the literature under the code TP-7 ^[3][4]. It was created at the Zakusov Research Institute of Pharmacology in Russia as a stable, longer-acting analogue of the endogenous immunomodulatory peptide tuftsin, and it is classified pharmacologically as an anxiolytic with nootropic and antiviral properties ^[3].

Its research profile centers on anxiety, memory, and stress. Long-term dosing studies in emotionally reactive rats showed that the heptapeptide reduced anxiety-phobic states within days and sustained that effect over weeks without altering body weight ^[3], while related work demonstrated anxiolytic action tied to normalization of brain serotonin metabolism ^[4]. More recent studies connect Selank to neurotrophin biology, reporting that it protects against ethanol-induced memory impairment and regulates brain-derived neurotrophic factor in the hippocampus and prefrontal cortex ^[1]. It has also been shown to change the expression of genes for chemokines, cytokines, and their receptors, consistent with its tuftsin-derived immunomodulatory heritage ^[2].

In Russia and neighboring countries Selank has been used clinically as an anxiolytic, but it is not approved by the United States Food and Drug Administration or the European Medicines Agency, so in most of the world it is an unapproved research peptide ^[1][3]. It is most commonly formulated as an intranasal solution, a route that suits its peptide chemistry and supports delivery toward the central nervous system. Interest in Selank rests on the idea of a peptide that calms anxiety and supports cognition through endogenous regulatory systems, described in the literature as fast-acting and largely free of the side effects associated with classic sedatives ^[3].

Selank has a clean short-term profile in Russian clinical and community use, with mild nasal irritation the most common gripe, plus the occasional bit of tiredness, headache, or mild dizziness. Because it works through GABA, the one real caution is stacking it with other strong GABAergic agents (benzos, phenibut, alcohol), where additive calming could tip into sedation. It is non-addictive and does not cause withdrawal. It is used clinically in Russia but is not an approved medicine in most of the West, where it is sold as a research peptide, so long-term human data is limited; if you reconstitute peptide yourself, sterile handling matters. Not medical advice.

Selank is a synthetic heptapeptide developed in Russia at the V.V. Zakusov Research Institute of Pharmacology, working with the Institute of Molecular Genetics of the Russian Academy of Sciences. It was designed as an analogue of the endogenous immune peptide tuftsin, extending the tuftsin sequence with a Pro-Gly-Pro tail to improve metabolic stability; in the early literature the molecule was designated TP-7. Foundational pharmacological work in the 1990s by Seredenin, Semenova and colleagues characterized its anxiolytic and mild psychostimulant profile and its normalization of brain serotonin metabolism. Selank was subsequently studied as a non-sedating, non-addictive anxiolytic and has been used in Russia as a nasal formulation, though it has not received regulatory approval in Western markets.

Selank is well regarded among peptide enthusiasts as a gentle, non-sedating way to ease anxiety while supporting focus and memory, a profile that sets it apart from benzodiazepines and their dependence and withdrawal problems. Reviewers frequently highlight its favorable tolerability, the absence of tolerance across weeks of dosing in animal studies, and its intriguing dual identity as both an anxiolytic and an immunomodulator inherited from tuftsin. The convenience of intranasal delivery adds to its practical appeal. Honesty requires noting that most controlled evidence remains preclinical or from smaller Russian clinical studies, and large Western trials with quantified human effect sizes are lacking. Even so, its reproducible calming effect and clean safety record keep it a favorite in the nootropic community.