Cognitive neuropeptides
Peptides studied for effects on cognition, mood, and the nervous system.
How this class works
Proposed neuromodulatory and neurotrophic mechanisms. Human evidence varies and is often limited; nootropic claims frequently outrun the data.
Semax grades highest (D-tier) on current published evidence. This reflects evidence maturity — not a recommendation to use anything.
Compounds in this class
Head-to-head: Semax vs Selank
FAQ
Which cognitive neuropeptides has the strongest evidence?
Semax currently grades highest in this class (D-tier) on published evidence — which reflects evidence maturity, not a recommendation.
Are any cognitive neuropeptides FDA-approved?
No members of this class are FDA-approved; they are investigational or research-only.
How do compounds in this class differ?
Proposed neuromodulatory and neurotrophic mechanisms. Human evidence varies and is often limited; nootropic claims frequently outrun the data. Within the class, members differ widely in evidence maturity, approval status, and safety — the tiers and evidence stages above show how.
Research reference only. Not medical advice. Compounds in a class can differ greatly in evidence, approval status, and safety.