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Selank

unknown risk

Also: TP-7 · Selanc

Preliminary Research Only

Selank is a synthetic heptapeptide analog of tuftsin developed at the Institute of Molecular Genetics (Russian Academy of Sciences). It is registered as a medicine in Russia for anxiety disorders and shows anxiolytic, nootropic, and immunomodulatory properties.

Molecular Weight
751.9 g/mol
Formula
C33H57N11O9
Common Dosing
250-3000 mcg/day intranasal or subcutaneous (from Russian studies)
Category
research
Last Reviewed
2025-01-15

Reported Benefits

Anxiolytic Effect

Preliminary 15 studies

Russian RCTs show anxiety reduction comparable to benzodiazepines without sedation or dependence.

Cognitive Enhancement

Preliminary 10 studies

Improved memory consolidation and attention in clinical studies.

Immune Modulation

Preliminary 8 studies

Modulates IL-6, TNF-alpha, and interferon expression.

Mechanism of Action

Selank is derived from the endogenous immunomodulatory peptide tuftsin (Thr-Lys-Pro-Arg) with additions that improve CNS penetration. It modulates GABA-A receptor function, influences BDNF expression, and affects serotonergic, dopaminergic, and enkephalinergic systems. The immune effects are mediated through modulation of cytokine production.

Key Clinical Studies

Semenova TP et al. (2010)

RCT · Placebo-controlled trials

Anxiety reduction with cognitive preservation

Zozulya AA et al. (2001)

RCT · 62 GAD patients

Comparable anxiolytic effect to medazepam without dependence risk

Overview

Selank represents the best-developed anxiolytic peptide from the Russian pharmacological tradition. Unlike benzodiazepines, it produces anxiolytic effects without sedation, tolerance development, or withdrawal — properties that have driven significant research interest and, in Russia and Ukraine, clinical registration.

GABA Modulation Without Sedation

The key clinical differentiation is the ability to reduce anxiety through GABA pathway modulation while preserving or enhancing cognitive function. This stands in direct contrast to benzodiazepines, which consistently impair memory and attention. The mechanism by which selank achieves this selectivity is not fully elucidated.

Western Research Gap

Despite a substantial Russian evidence base, there are virtually no independently conducted Western clinical trials for selank. This is the primary barrier to broader acceptance — not necessarily the evidence itself, but the concentration of that evidence within a single national research tradition.

Intranasal vs. Injectable

Intranasal delivery is commonly used due to its convenience and reasonable CNS bioavailability. Subcutaneous injection produces more consistent pharmacokinetics. Oral bioavailability is negligible due to peptide degradation in the GI tract.

Regulatory Status

Research Only

Russian research peptide; registered medicine in Russia/Ukraine; no FDA/EMA approval

Safety Profile

Side Effects

  • Mild sedation (transient)
  • Nasal irritation (intranasal route)

Contraindications

  • Severe renal impairment

Drug Interactions

  • Benzodiazepines (additive CNS effects)
  • Antidepressants

Primary Uses

AnxiolyticCognitive enhancementStress reductionImmune modulation

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Disclaimer: This information is for educational and research purposes only. Not medical advice. Consult a qualified healthcare provider before using any compound.