What Selank is
Selank is a synthetic peptide analog discussed around anxiolytic, cognitive, and neuroimmune signaling themes.
Selank is grouped under Longevity + Skin / Endogenous / Biology on PeptideFactCheck because it is one of the better-known nootropic peptides in online longevity and performance circles.
The useful starting point is to separate the molecule itself from the internet story around it. It is one of the better-known nootropic peptides in online longevity and performance circles.
Why people keep looking it up
It is one of the better-known nootropic peptides in online longevity and performance circles.
Selank is a synthetic peptide analog discussed around anxiolytic, cognitive, and neuroimmune signaling themes.
Selank tends to stay in the conversation because it touches a familiar public theme: neuropeptide analog, anxiety discussion, and cognitive interest. That makes it easy for the claim to travel faster than the evidence.
What the evidence can support right now
Early human signal plus a larger surrounding cloud of informal claims.
Some human literature exists, but the evidence base is still narrower than the confidence of internet discussion.
The peptide is mainly supported by smaller studies and mechanistic neurobiology narratives.
Why this page carries the current tier: Early human signal plus a larger surrounding cloud of informal claims.
The current seed trail for Selank is pulling from 1 literature source, 1 trials source, and 1 databases source.
Safety, limits, and regulatory context
Claims about mood, cognition, and performance are easy to oversell when the evidence remains limited.
Selank is not FDA-approved in the current record.
Editorial boundary: PeptideFactCheck does not publish dosing, cycling, sourcing, injection, or administration instructions for Selank. The job here is to explain the public claim, the mechanism story, the evidence strength, and the current limits.
Molecular and identifier data
The current PubChem match for Selank is CID 11765600. That gives the page a source-backed chemistry record rather than a placeholder identifier block.
- PubChem CID
- 11765600
- Formula
- C33H57N11O9
- Molecular weight
- 751.9
- InChIKey
- JTDTXGMXNXBGBZ-YVHUGQOKSA-N
Matched synonyms include Selank, 129954-34-3, Selanc, Thr-Lys-Pro-Arg-Pro-Gly-Pro, TS9JR8EP1G, L-Proline, L-threonyl-L-lysyl-L-prolyl-L-arginyl-L-prolylglycyl-, Threonyl-lysyl-prolyl-arginyl-prolyl-glycyl-proline, DTXSID701029276.
Open PubChem recordClinical trial snapshot
The current ClinicalTrials.gov intervention query for Selank returns 2 study records. This does not prove efficacy by itself, but it does show whether the peptide is showing up in a formal trial registry rather than only in forums or vendor copy.
Literature snapshot
The current PubMed query for Selank returns 71 results. The articles below are a quick literature surface so the page shows actual papers instead of only generic evidence labels.
Source trail
Each linked source is shown directly so the page can be audited. The page now combines its editorial seed trail with automated official-source enrichment generated on 2026-04-24 from PubChem, ClinicalTrials.gov, PubMed, DailyMed, openFDA label, and Drugs@FDA.