Nootropic Peptide

A peptide with cognitive-enhancing, neuroprotective, or neuroplasticity-promoting properties. Examples include Semax, Selank, Dihexa, P21, and Pinealon. Unlike many stimulant nootropics, peptide nootropics generally work through mechanisms such as BDNF/NGF upregulation, HGF/c-Met signaling, or modulation of serotonin and dopamine pathways, rather than catecholamine release.