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Peptide reference

Selank

Selank

In vitro

How it works

A Russian-developed anxiolytic heptapeptide, structurally related to tuftsin (an immunomodulatory tetrapeptide). The mechanism isn't clean: it appears to influence GABAergic transmission, BDNF expression, and enkephalin degradation. Russian clinical trials in the 1990s–2000s showed anxiolytic effects without sedation or dependence liability. Those trials were small and published in Russian-language journals — the Western evidence base is thin.

FDA status
No FDA approval. Not on the July 2026 or February 2027 PCAC dockets. PCAC has not previously voted on it.
WADA status
Permitted in sport
Route
intranasal; subcutaneous injection

Key studies

Frequently asked

  • What is Selank?

    Selank is a synthetic seven-amino-acid peptide built from tuftsin, a naturally occurring immune peptide, with an added stabilizing sequence from the Russian neuropeptide research tradition. In animal studies it appears to modulate serotonin and GABA signaling in the brain, with anxiolytic effects reported without the sedation or dependence risk of benzodiazepines.

  • What does the clinical evidence for Selank actually show?

    The most-cited human evidence is a Russian-language study comparing selank to a benzodiazepine in 60 patients with anxiety disorders, reporting a pronounced anxiolytic effect. That study wasn't placebo-controlled, and essentially no Western-style randomized trial has replicated it since. The Russian clinical literature here is real and worth reading honestly; it's just not equivalent to a Western placebo-controlled evidence base.

  • Is Selank approved by the FDA or on the PCAC docket?

    Selank has no FDA-approved drug application; it's authorized for clinical use in Russia, not the US. It's also not on either of the FDA's 2026 or 2027 PCAC review waves, and it was never previously reviewed by PCAC at all; it simply hasn't entered that pipeline.

  • Is Selank banned for athletes?

    Selank doesn't appear by name on WADA's Prohibited List, but it falls under the S0 category covering non-approved substances without recognised human therapeutic use outside Russia. Athletes subject to WADA testing should treat it as prohibited; not being named specifically isn't the same as being cleared.

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Research on Selank

Peptide bioavailability: why your peptide is a needle, not a pill

WADA

Most peptides come as a vial and a needle for one reason — swallow them and your gut destroys them before they can work. Understanding how a peptide actually gets into your body is the single lens that tells you whether a product can work at all. Here is how it works, in plain English.

bpc-157
selank
semax

Your stress switch: how the HPA axis works, and where Selank and Semax reach into it

WADA

Your body has a switch for stress — it should flip on under load and off when it passes. When it stops flipping off, you get the wired-and-foggy version most men know. Here is how that switch works, and how two Russian peptides could help it behave.

selank
semax

Selank: calm without the benzodiazepine tax

WADA

Selank is Russia's attempt at an anxiety peptide that takes the edge off without the sedation, the fog, or the dependence a benzodiazepine leaves you with. The early promise is real and genuinely interesting — here's what it could do for you, and how far the human proof actually goes.

selank

Selank vs Semax: the calm one and the sharp one

WADA

Selank and Semax get sold side by side as brain peptides, but they solve opposite problems — one calms, one sharpens. Here's what each could do for you, how far the Russian evidence actually goes, and why the July 2026 FDA review splits them apart.