Selank is a synthetic peptide known in research circles primarily as an anxiolytic peptide, a compound with a studied anti-anxiety profile. This overview covers its properties, its dosage form (drops), and the dosing that appears in published studies. One boundary up front: this is educational material about a research-use compound, not a finished medicine.

Selank: properties and origin

Selank is a heptapeptide, a synthetic analog of the endogenous peptide tuftsin (a fragment of immunoglobulin G). A stabilizing Pro-Gly-Pro sequence was added to the natural chain, which markedly extends the molecule's working time, because native tuftsin is broken down in the blood within minutes. It was developed by Russian institutes of molecular genetics and pharmacology starting in the 1990s.

The most frequently cited properties are its anxiolytic (anti-anxiety) action and a moderate nootropic effect. In preclinical and early clinical work, Selank was studied in generalized anxiety disorder and neurasthenia; some data were compared with benzodiazepines, with authors noting the absence of pronounced sedation and withdrawal. These are study findings, not a basis for self-treatment.

Likely mechanisms of action

Selank's molecular profile is described across several directions: effects on GABAergic transmission, modulation of serotonin and other monoamine metabolism, and slowed breakdown of enkephalins via inhibition of peptidase enzymes. Some studies reported changes in BDNF expression and in the inflammatory cytokine profile. This makes Selank an interesting subject for neurobiology experiments, though no single agreed model of action exists yet.

Drops: why the intranasal form

The most common form of Selank in studies is drops (an intranasal solution, usually 0.15% or 0.3%). Peptides survive the gastrointestinal tract poorly, so oral intake is inefficient. The nasal mucosa allows fast absorption and partial access to the CNS, bypassing first-pass metabolism in the liver. That is why the literature describes Selank as nasal drops rather than tablets or capsules.

Selank in studies: where to find the dosing

In studies Selank was used mostly intranasally; the exact doses and frequency depended on the protocol. We do not present them here as instruction, the study data are collected in the reference Selank: the regimen from the clinical report.

We do not sell Selank. But if the neuropeptide direction interests you, consider logically related compounds from our catalog: each ships with a COA per batch. For example, P21 is studied as a low-molecular-weight candidate with a neurotrophic profile and effects on neurogenesis. Pinealon is a short peptide bioregulator researched in the context of neuroprotection and cognitive function. Both are for research use.

For Longeva the principle is simple: every batch has a certificate of analysis (COA), and purity can be verified before you work with it. With research peptides, verified identity matters more than any "intake schedule."

Summary

Selank is a well-documented anxiolytic peptide with a short list of studied properties: anti-anxiety and mild nootropic activity, an intranasal form (drops), and dosing described in small clinical studies. This is an educational overview for a research context, not medical advice. If you work with neuropeptides, choose samples with confirmed purity and documented origin.