Semax Peptide vs Selank

Semax and Selank are both synthetic neuropeptide analogues developed in Russia at the Institute of Molecular Genetics, but they have distinctly different mechanisms and research profiles. Semax is an ACTH 4-10 analogue that primarily acts on melanocortin receptors and is studied for its effects on BDNF expression, cognitive enhancement, focus, and neuroprotection. Selank is a synthetic analogue of the endogenous immunomodulatory peptide tuftsin, studied for its anxiolytic effects, GABAergic modulation, and immunomodulatory properties. While both are classed as nootropic research compounds, their mechanisms and primary research applications are largely non-overlapping, making them suitable for distinct experimental designs.