What is Selank and how does it work?

Selank is a synthetic seven-amino-acid (heptapeptide) derivative of the immune peptide tuftsin, with a C-terminal Pro-Gly-Pro tail for metabolic stability, studied as an anxiolytic and nootropic research compound. The leading mechanistic hypothesis is allosteric modulation of the GABAergic system - it changes the expression of GABA-related genes rather than acting as a direct GABA-A agonist - alongside effects on BDNF and monoamine neurotransmitters. It is supplied for laboratory research only, not for human use.

What does the Selank research actually show?

The headline finding is a Russian clinical study in which Selank produced anxiolytic effects similar to the benzodiazepine medazepam, plus additional antiasthenic (anti-fatigue) and psychostimulant activity (Zozulya et al., 2008). Mechanistic work shows it modulates GABAergic gene expression (Volkova et al., Frontiers in Pharmacology, 2016). These are research findings, largely from Russian clinical and animal studies, and are not a promise of any effect in humans.

How does Selank compare with Semax?

Both are Russian heptapeptides that share the same Pro-Gly-Pro stabilising tail and intranasal delivery, and both modulate monoamine neurotransmitters. They start from different parents and emphasise different effects: Selank builds on tuftsin and is studied for anxiolysis and stress buffering, while Semax is an ACTH(4-10) analogue studied for cognition and neuroprotection. They are sometimes studied together to cover both the calm and the focus dimensions.

Is Selank legal, and is it FDA-approved?

Selank is not FDA-approved in the United States and is supplied strictly as a research chemical for laboratory use, not for human consumption. It is a registered/approved anxiolytic medicine in Russia. Legal status varies by jurisdiction, so confirm your local rules before purchasing.

How long does Selank take to work, and how is it stored?

Plasma clearance is rapid - effectively complete within about ten minutes - but the Pro-Gly-Pro tail extends functional activity far beyond parent tuftsin, whose half-life is measured in seconds; Russian clinical and review sources describe a fast intranasal onset. Store the lyophilised powder frozen at minus 20 degrees Celsius; after reconstitution with bacteriostatic water, refrigerate at 1 to 6 degrees and protect from light, avoiding repeated freeze-thaw cycles. These figures are reported descriptively, not as a dosing recommendation.

How-to guides

Selank: The Anxiolytic Nootropic Peptide Research Guide

Quick answer: Selank is a synthetic heptapeptide (Thr-Lys-Pro-Arg-Pro-Gly-Pro) built on the immune peptide tuftsin , studied as a non-sedating anxiolytic . The research interest is specific: it calms anxiety with a quality compared to benzodiazepines in Russian clinical work, but without the sedation, memory impairment or dependence - via allosteric modulation of the GABAergic system plus BDNF and monoamine effects. It is not FDA-approved and is supplied for research use only, not for human use .

How to read this guide. We describe Selank's mechanism and the published research, most of it Russian clinical and animal work. Nothing here is a dose, a protocol, or medical advice, and none of the effects described are a promise of any outcome in humans.

What Selank actually is

Selank (sequence TKPRPGP; also called TP-7) is a short synthetic peptide built on tuftsin - the immunomodulatory tetrapeptide naturally released during processing of the IgG heavy chain - with a C-terminal Pro-Gly-Pro extension that protects it from rapid enzymatic breakdown. That stabilising tail is the same structural trick used in its better-known sibling, Semax. Selank inherits some of tuftsin's immune activity, but its research identity is as an anxiolytic .

The mechanism, step by step

Selank does not appear to bind the GABA-A receptor as a direct agonist the way a benzodiazepine does. The leading model is allosteric modulation of the GABAergic system , layered with several other effects:

GABAA modulation. Alters the receptor's affinity for its endogenous ligands, producing anxiolysis by a different route than benzodiazepines - and it modulates the expression of GABAergic genes (including the GABRA2 and GABRB1 subunits), suggesting a longer-term adaptation rather than only acute action.

BDNF elevation. Rapidly raises hippocampal BDNF - neurotrophic support that classic anxiolytics do not provide.

Monoamine balance. Shifts noradrenaline, dopamine and serotonin (and their metabolites), which is thought to add the antiasthenic ("anti-fatigue") and mild psychostimulant component to the profile.

Enkephalin potentiation. Inhibits enkephalin-degrading enzymes, raising endogenous opioid tone that contributes to stress buffering.

What the research shows - and where it stops

Zozulya et al. (2008) - a Russian clinical study compared Selank directly with the benzodiazepine medazepam in generalised anxiety disorder and neurasthenia, reporting comparable anxiolytic effect but with additional antiasthenic and psychostimulant activity from Selank.

Volkova et al. (Frontiers in Pharmacology, 2016) - found Selank altered the expression of GABAergic-neurotransmission genes, supporting the allosteric-GABAergic-modulation hypothesis.

The reported absence of sedation, tolerance and withdrawal is the exact research question that makes Selank interesting versus benzodiazepines - but it is worth being honest that much of that profile comes from Russian clinical and review literature rather than large independent Western trials.

Registered abroad is not approved here. Selank is a registered anxiolytic medicine in Russia, but it is not FDA-approved and is not approved in the US or EU. The material New-U supplies is unapproved research-grade reagent for laboratory research only - not for human use . Nothing here is medical advice or a dose recommendation, and anxiety is a clinical matter for a qualified doctor.

Selank vs Semax: the two Russian heptapeptides

The most common Selank question is how it relates to Semax. They are a matched pair: both are heptapeptides with the same Pro-Gly-Pro stabilising tail and both use intranasal delivery, and they overlap on monoamine modulation. But they start from different parents and emphasise different research targets - Selank (from tuftsin) leans anxiolytic and stress-buffering; Semax (an ACTH(4-10) analogue) leans cognitive and neuroprotective. They are sometimes studied together to cover both the "calm" and the "focus" dimensions. For the regulatory side, see is Semax FDA-approved? and the Semax / Epitalon / DSIP FDA review (2026).

Formats & handling

Selank is most often studied via the intranasal route (a dilute solution), which delivers peptide toward the CNS non-invasively; a subcutaneous format is also used. It ships as lyophilised powder - store it frozen at −20 °C, and after reconstitution with bacteriostatic water keep it refrigerated at 1–6 °C and away from light, avoiding repeated freeze-thaw cycles. See the reconstitution guide and storage guide for laboratory handling, and the CoA guide for verifying purity.

Frequently Asked Questions

What is Selank used for in research? It is studied as a non-sedating anxiolytic and nootropic - anxiety and stress models, BDNF/neurotrophic support, and monoamine modulation - with a research emphasis on doing so without the sedation, amnesia or dependence of benzodiazepines. It is supplied for laboratory research only.

How does Selank compare with benzodiazepines? A Russian clinical study found comparable anxiolytic effect to medazepam; the reported difference is the side-effect profile - review literature describes Selank as not producing sedation, amnesia, tolerance, dependence or withdrawal. It is studied as an allosteric GABAergic modulator rather than a direct GABA-A agonist.

Selank or Semax? Selank emphasises anxiolysis and stress buffering; Semax emphasises cognition and neuroprotection. Same structural family, different parent peptide and different research focus - which is why they are sometimes studied together.

Is Selank legal / FDA-approved? Not FDA-approved in the US and sold strictly as a research chemical, not for human consumption; it is a registered anxiolytic in Russia. Legal status varies by jurisdiction - confirm your local rules first.

Buy Selank from New-U Research Compounds

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Research use only — not for human consumption. All products are supplied strictly for laboratory research purposes.

Selank: The Anxiolytic Nootropic Peptide Research Guide

What Selank actually is

The mechanism, step by step

What the research shows - and where it stops

Selank vs Semax: the two Russian heptapeptides

Formats & handling

Frequently Asked Questions

Related Reading

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