Peptide library / Brain & sleep / Cortagen
Cortagen
A four amino acid peptide from the Khavinson group, proposed to help recovery of nerve cells.
Effects studied or claimed
What it is used or promoted for, and where each effect has actually been seen
- Nerve regeneration after injuryAnimals
How it is thought to work
Cortagen is reported to alter gene expression in neurons, based mostly on studies from one group of laboratories.
What the evidence shows
Experiments in rats suggested faster recovery of nerve function after injury. Human data are largely absent.
Safety and unknowns
Human safety has not been established in controlled trials.
Regulatory status
Not approved in major markets.
Regulatory status changes quickly. This entry was last reviewed on 27 October 2026. Confirm current status with the FDA before relying on it.
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General information, not medical advice. Do not buy or inject unregulated peptides.