Selank
unknown riskAlso: TP-7 · Selanc
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.
Reported Benefits
Anxiolytic Effect
Russian RCTs show anxiety reduction comparable to benzodiazepines without sedation or dependence.
Cognitive Enhancement
Improved memory consolidation and attention in clinical studies.
Immune Modulation
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 OnlyRussian 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
Weekly Briefing
Regulatory updates + new study breakdowns.
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