Definition
A nootropic is a compound proposed to enhance cognitive function, memory, or learning. On TruthTides, the term appears in the context of Dihexa (a synthetic hexapeptide reported in preclinical studies to promote synaptogenesis at picomolar concentrations) and the neuropeptides Semax and Selank, which demonstrate neurotrophic factor upregulation (BDNF and NGF for Semax) alongside anxiolytic and cognitive effects in published research. None of these compounds are FDA-approved for cognitive indications.
Source: Dihexa, Semax, and Selank peptide summaries