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Selank

C
Animal replicated
C
Evidence grade: Animal replicated

Effect demonstrated in multiple animal studies; human data sparse or extrapolated. Grades summarize evidence quality, not whether a compound is appropriate, legal, or risk-free.

At a glance
What it is
Synthetic heptapeptide anxiolytic/nootropic; tuftsin analog; neuropeptide (TKPRPGP).
Why people use it
Generalized Anxiety and Stress · Cognitive Enhancement and Nootropic Effects · Neurasthenia and Fatigue · Alcohol and Substance Use Support · Immune and Inflammatory Modulation
What the evidence supports
One head-to-head clinical trial vs medazepam (benzodiazepine): 62 patients with GAD, similar anxiolytic efficacy, with additional cognitive/antiasthenic benefits for Selank (Zozulya et al., 2008). All clinical research from Russian development institutions. No independent Western RCT.
If you only read one thing

The central tension resolved: Selank's evidence is simultaneously the strongest of any neuropeptide in this reference (Russian Phase 2 clinical trial, regulatory approval, decades of clinical use data) and the weakest-validated by Western standards (zero independent replication, all evidence from development institutions, no English-language RCT in indexed literature). Both things are true.

Route / form

Same compound, route-specific context. Switch forms instead of opening separate pages.

Evidence fit
Established

delivers Selank to olfactory neuroepithelium with direct access to limbic and prefrontal structures relevant to anxiety modulation. Rapid onset (10-30 minutes). The comm…

Route caveat
Protocol not standardized

No route-matched protocol rows were parsed for this form; use the route notes and full dosing chapter before comparing options.

Protocol anchor
Full dosing section

Open the full report at the dosing chapter for protocol rows, cycle context, and administration notes.

Typical dose snapshot
150 mcg
See route context
Selank (standard, TKPRPGP)

the compound studied in published clinical and preclinical research. Russian commercial formulation: 'Selank 0.15%' nasal drops (150 mcg per actuation), approved 2009. The compound in all referenced trials. This is what to use when 'Selank research' is the goal.

delivers Selank to olfactory neuroepithelium with direct access to limbic and prefrontal structures relevant to anxiety modulation. Rapid onset (10-30 minutes). The commercially approved Russian formulation uses 150 mcg per actuation. Community protocols range from 250-500 mcg per session.

N-Acetyl Selank Amidate (NA-Selank-A)Selank + Semax combination products
Published literature
3human RCTs1human study1animal0in vitro
Evidence reality check
Human evidence
4 human studies
3 randomized; 1 observational.
Preclinical base
1 lab signal
1 animal; 0 in-vitro/mechanistic.
Best-supported use
GAD / Anxiety (intranasal)
B* grade · Comparable to medazepam; + antiasthenic/psychostimulant; no sedation or dependence. Single non-independent trial; Russian-only; not replicated in West
Indication map
Supported / plausible / speculative / avoid
Supported
GAD / Anxiety (intranasal)
B* grade · Comparable to medazepam; + antiasthenic/psychostimulant; no sedation or dependence. Single non-independent trial; Russian-only; not replicated in West
Supported
Anxiety + benzo combination
B* grade · Better outcomes + fewer side effects vs benzo alone. Same provenance limitations
Supported
Neurasthenia / stress fatigue
B* grade · Antiasthenic and energizing quality alongside anxiolysis. Non-independent; no Western validation
Supported
Immune modulation
C grade · IL-6 modulation; cytokine shifts; tuftsin heritage. Not a primary application; not clinically validated for immune indication

Selank is the most credentialed research chemical in the Western peptide market and also the compound with the biggest gap between what its credentials imply and what independent science has confirmed. It is a registered pharmaceutical drug — in Russia. And that is a genuinely different evidentiary status than any other research peptide in this reference. It is also entirely from one country's development institutions, in one country's language, with one country's regulatory oversight. That is a meaningful distinction.

The central tension resolved: Selank's evidence is simultaneously the strongest of any neuropeptide in this reference (Russian Phase 2 clinical trial, regulatory approval, decades of clinical use data) and the weakest-validated by Western standards (zero independent replication, all evidence from development institutions, no English-language RCT in indexed literature). Both things are true. The community has evaluated this evidence and broadly concluded that the combination of consistent Russian clinical data, coherent mechanism, and individual experience is sufficient to justify use. That is a defensible position. It is not the same as 'proven by Western standards.'

The strongest argument for Selank: the clinical profile it offers — comparable anxiolytic efficacy to a benzodiazepine with none of the dependence, tolerance, sedation, or cognitive impairment — is genuinely without equivalent in Western pharmacology. If the Russian data is accurate (and there is no specific reason to doubt it beyond its provenance), Selank represents a therapeutic advance in anxiety management that the Western pharmaceutical industry has not replicated. The mechanism is coherent, the preclinical data is consistent, and the community experience over years of use has not produced safety signals.

The strongest argument for caution: the entire evidence base is from the people who developed and commercially benefit from Selank. Independent adversarial replication has not occurred. The FDA specifically flagged immunogenicity concerns and limited safety information for intranasal peptides. The WADA status is genuinely uncertain. And the mechanism — despite years of study — is still not fully characterized.

Properties
WADA S0✓ Human RCTNot injectable
Molecular weight
~791 Da. CAS: 129954-34-3. Seven amino acids; stable enough for clinical use due to Pro-Gly-Pro degradation resistance.
Half-life
~2-5 minutes in plasma. Effects last hours per dose via downstream signaling. Rapid peptidase degradation makes oral bioavailability negligible.
Typical dose
Intranasal: 250-500 mcg per session (2-5 drops or sprays), 1-2x daily. SubQ: 150-250 mcg daily. Cycles of 10-14 days with breaks standard in Russian protocol; community often runs longer.
Route
Intranasal spray — the route used in Russian clinical trials and commercial formulation. Nasal mucosa/olfactory pathway provides rapid CNS delivery. SubQ injectable also used (systemic distribution, slower CNS onset). NOT effective orally.
Evidence
CAnimal replicated
Origin
Developed at the Institute of Molecular Genetics, Russian Academy of Sciences, by Nikolai F. Myasoedov and colleagues in the 1990s. Based on tuftsin (a natural immunomodulatory tetrapeptide from IgG) with a stabilizing Pro-Gly-Pro C-terminal extension.
Russian Approval
Registered by the Russian Ministry of Health in 2009 as 'Selank 0.15%' nasal drops for generalized anxiety disorder (GAD) and neurasthenia. Available by prescription in Russia and some CIS countries.
Primary Mechanisms
GABA-A allosteric modulation (anxiolytic); enkephalinase inhibition (stabilizes endogenous enkephalins); BDNF upregulation (hippocampus); serotonin modulation (state-dependent normalizer); dopamine D5 receptor activation (nootropic). Mechanism not fully characterized.
Key Comparison
Selank vs Semax: Selank = anxiolytic first, mild nootropic second. Semax = nootropic/cognitive first, minimal anxiolytic. Often used together in 'calm focus' stacks.
FDA / US Status
Not FDA-approved. Category 2 (significant safety concerns) removed for Selank acetate at some point per FDA updates; PCAC review scheduled July 24, 2026 (Day 2 of PCAC meeting). Research chemical in US.
WADA Status
Not explicitly listed on 2026 WADA Prohibited List. HOWEVER: WADA S0 prohibits all unapproved substances not approved by any regulatory authority for therapeutic use. Russian approval may not satisfy S0 criteria for Western athletes. Treat as potentially banned under S0 — verify with your anti-doping authority before use.
Safety
Excellent profile in Russian clinical data — no sedation, no dependence, no withdrawal, no cognitive impairment. Primary adverse effect: mild nasal irritation with intranasal use. No serious adverse events documented in published studies.
Simple view

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