Research directory
Peptide compounds, organized by evidence and regulatory status
A curated reference of peptide research compounds drawn from public biomedical databases. Each entry lists mechanism summaries, regulatory status, evidence quality, safety flags, and links to peer-reviewed literature — never dosing, protocols, or sourcing.
Cerebrolysin
Porcine brain-derived peptide extract.
Mixture of low-molecular-weight peptides from porcine brain tissue. Studied in dementia and stroke; approved in some European and Asian countries. Not...
Dihexa
Nootropic & Neuropeptides reference entry
Synthetic angiotensin IV analog studied in rodent models of cognitive function. No published human clinical trial data.
Noopept
N-phenylacetyl-L-prolylglycine ethyl ester
Dipeptide racetam analog; approved in Russia for cognitive complaints. Limited Western-standard trial evidence.
P21
Nootropic & Neuropeptides reference entry
Synthetic peptide analog of ciliary neurotrophic factor (CNTF). Animal models only.
PE-22-28
Nootropic & Neuropeptides reference entry
Spadin analog and TREK-1 modulator studied in rodent depression models.
Selank
Nootropic & Neuropeptides reference entry
Synthetic tuftsin analog approved in Russia for generalized anxiety. Limited Western-standard clinical evidence.
Semax
Met-Glu-His-Phe-Pro-Gly-Pro
Synthetic heptapeptide analog of an ACTH fragment, approved in Russia for stroke and cognitive indications. Small human neuroimaging studies exist; no...