At a glance
- Class
- Tuftsin analogue
- Receptor targets
- GABAergic and cytokine-related pathways (mechanism debated)
- Length
- 7 amino acids
- Molecular mass
- ≈ 752 Da
- Origin
- Synthetic analogue of an immune-derived peptide
- Research area
- Neuro & longevity research
- Also known as
- –
What Selank is
Selank (Thr-Lys-Pro-Arg-Pro-Gly-Pro) extends the tetrapeptide tuftsin with a Pro-Gly-Pro tail to resist degradation.
Research looks at its interaction with the GABAergic system and with inflammatory cytokines. As with Semax, the human literature is concentrated in Russia.
What the research literature studies
- GABA-receptor modulation in cell and animal models
- Cytokine expression in immune-cell cultures
- Peptidase resistance of the Pro-Gly-Pro tail
Evidence rating: 2/5
Mostly animal and in vitro. Mostly animal and cell data, with regional clinical use. See our methodology for how levels are assigned.
- Limited independent replication outside Russian research groups.
Regulatory status
Selank is registered as a medicine in Russia but is not approved by the MHRA, EMA or FDA. Nordapep supplies it for in vitro laboratory research only.
Reviewed November 2026.
Selank at Nordapep: sizes and price per mg
Every size, its price and the cost per milligram, so you can choose the best-value vial for your protocol.
| Size | Price | Per mg | Availability |
|---|---|---|---|
| 10mg | £44.91 | £4.49 | In stock |
Live Nordapep prices, refreshed hourly. Prices in GBP, excluding shipping; see Nordapep for the current price.
Compare Selank
Selank FAQ
What is tuftsin?
A naturally occurring tetrapeptide (Thr-Lys-Pro-Arg) released from immunoglobulin G. Selank is a stabilised analogue of it.
Where can I buy Selank for research?
Selank is listed at Nordapep with a batch-matched Certificate of Analysis, from £44.91. It is supplied for in vitro laboratory research only.
Is Selank approved?
Selank is registered as a medicine in Russia but is not approved by the MHRA, EMA or FDA. Nordapep supplies it for in vitro laboratory research only.
Key terms for Selank
Further reading
Cite this page
peptide.wiki. (2026). Selank: research peptide profile. peptide.wiki. https://www.peptide.wiki/peptides/selank