Peptide library / Brain & sleep / Cerebrolysin
Cerebrolysin
A mixture of peptides made from pig brain, used in parts of Europe and Asia after stroke and head injury.
Effects studied or claimed
What it is used or promoted for, and where each effect has actually been seen
- Recovery after strokeSmall human studies
- Vascular and Alzheimer dementiaSmall human studies
- Traumatic brain injurySmall human studies
How it is thought to work
Cerebrolysin contains many small peptides and amino acids reported to mimic neurotrophic factors, but its precise active ingredients are not defined.
What the evidence shows
Meta-analyses suggest modest benefit in some studies, but the largest trials in stroke did not show consistent improvement in outcomes.
Safety and unknowns
Generally well tolerated. As an animal product, it carries a theoretical risk of contaminants.
Regulatory status
Not approved in the United States. Used in many other countries.
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.