Semax & Selank
Overviews of the two peptides, how they compare, and where they stand in 2026.
Nootropic peptides: Semax, Selank, and what the evidence actually supports
A straight, sourced read on the best-known nootropic peptides for cognitive function and brain health. What Semax and Selank actually are, what the research does and does not show (much of it Russian and preclinical), how they compare with traditional nootropics, what they cost, and what the nootropic community says about them.
Selank nasal spray: why the nasal format, what the research studied, and what users report
Why Selank is almost always discussed as a nasal spray, how the nasal route compares with injection and with the Semax pairing, what the small and mostly Russian clinical literature actually measured, and what people who use it say it feels like.
Selank vs Semax: what is the difference?
A primary-sourced comparison of the Russian nootropic peptides Selank and Semax: origin, structure, mechanism, what each is studied for, how strong the evidence really is, whether they can be used together, what they cost and what the community says.