Selank

Selank is a synthetic heptapeptide developed in the same Russian research program that produced Semax. It is a modified fragment of tuftsin (a natural immune-regulating peptide) with a Pro-Gly-Pro stabilizing tail. It is used in Russia as a registered anxiolytic medication and is sold elsewhere strictly for laboratory research. Selank is studied for anxiety, stress resilience, immune modulation, and cognitive support.

Selank is the calm-and-clear peptide in the Russian nootropic family. While Semax pushes focus and alertness, Selank reduces anxiety and stress without sedation. Users describe feeling 'unbothered' rather than 'sleepy.' Like Semax, it is taken intranasally and produces noticeable effects within minutes. It is one of the most-discussed anxiolytic research peptides in the world.

Selank modulates GABAergic and serotonergic signaling, increases BDNF expression, and acts on the immune system as a tuftsin analog. It produces anxiolytic effects without binding benzodiazepine sites — no sedation, no dependence profile, no withdrawal in animal studies. It also upregulates expression of monoamine receptors and modulates enkephalin metabolism.

• •Generalized anxiety disorder (Russian clinical use)
• •Stress resilience research
• •Immune modulation as a tuftsin analog
• •BDNF expression
• •Mild cognitive improvement
• •Opioid withdrawal support

Selank is the default 'anti-anxiety' peptide in nootropic communities — frequently described as 'benzodiazepine-like without the drawbacks.' Users emphasize the non-sedating character and the rapid intranasal onset. Most run short cycles (2–4 weeks) like Semax.

“Russian chill-pill peptide without the brain fog.”

Most commonly combined with Semax for focus + calm in the same protocol. Sometimes paired with DSIP for sleep, or with thymosin alpha-1 in immune contexts since Selank is itself a tuftsin analog.

Selank is a Russian-developed heptapeptide anxiolytic derived from tuftsin, used intranasally for anxiety, stress resilience, and immune modulation. It does not cause sedation or dependence and is sold for laboratory research outside Russia.