Peptide • Brain, mood & cognition
Selank
Also called Thr-Lys-Pro-Arg-Pro-Gly-Pro
What it is, the potential benefits being studied, and what the evidence supports right now.
Early human research•Research-stage compound•Checked 2026-08-21
01 • Start here
Potential benefits being studied.
Anxiety, stress, cognition, and immune-related questions.
- Brain & cognition
- Mood & stress
- Immunity & inflammation
02 • Why it stands out
The simple explanation.
Selank is a peptide studied around anxiety, stress response, and cognition without the classic sedating profile people often associate with calming agents.
03 • Research highlight
Why researchers are interested.
Its main draw is the possibility of supporting a calmer mental state while preserving clarity.
Evidence detailsStudy limits, status, and safety context
Study summary: A 2008 randomized Russian-language trial compared Selank in 30 patients with medazepam in 32 patients with anxiety-related diagnoses. Other small studies exist.
What to keep in mind: The evidence is small, geographically concentrated, and insufficient to present Selank as an established U.S. anxiety treatment or broad cognitive enhancer.
Potential benefits describe research questions, not a promise that a product will produce the same result in a person.