Selank — Wolverine Health

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 PCAC July 2026 review docket. Anticipated for PCAC second review in early 2027.
WADA status: Permitted in sport
Route: intranasal; subcutaneous injection

Key studies

Selank and its analogs: a review of biological activity — Semenova et al.

Selank is a synthetic analog of tuftsin with anxiolytic properties, reducing anxiety in experimental models without sedation, motor impairment, or withdrawal signs associated with benzodiazepines.

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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.

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: 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 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.

Selank: the anxiety peptide Russia already uses

WADA

Selank is a small peptide Russia has used for anxiety since 2009 — calm without the benzodiazepine baggage, built from a fragment your immune system already makes. Here is what it is, what it might do, how good the evidence really is, and where it stands with US regulators.