Head to head
Cerebrolysin against Semax
Both are peptide preparations used clinically outside the United States for stroke and cognitive disorders. Cerebrolysin is a standardised mixture from pig brain approved in more than 30 countries; Semax is a defined synthetic heptapeptide approved in Russia and Ukraine.
Column A
CerebrolysinCerebrolysin (porcine brain-derived neuropeptides)
A standardized mixture of neuropeptides used clinically in many countries for stroke, dementia, and TBI.
Column B
SemaxSemax (synthetic ACTH 4-10 analogue)
A synthetic heptapeptide approved in Russia for stroke and cognitive disorders, studied for BDNF-driven neuroprotection.
Side by side, on the facts we can check
| Attribute | Cerebrolysin | Semax |
|---|---|---|
| Category | Nootropic & CNS | Nootropic & CNS |
| FDA status | Not FDA-approved (approved in 30+ countries) | Not FDA-approved (approved in Russia and Ukraine). PCAC voted to recommend for compounding (July 2026); awaiting FDA rulemaking |
| Half-life | Varies by fraction | Short (minutes); intranasal use |
| Molecular weight | Mixture (<10 kDa peptides) | 813.9 Da |
| Mechanism | Its neuropeptide fractions mimic neurotrophic factors such as BDNF and NGF and activate neuroprotective signaling pathways in the brain. | Increases BDNF and NGF expression and modulates the melanocortin and dopaminergic systems, supporting neuroprotection and synaptic plasticity. |
| Human studies cited | 1 | 1 |
| Legal status, US | Not approved | Not approved; research use only |
Frequently asked questions
What is the difference between Cerebrolysin and Semax?
Cerebrolysin: A standardized mixture of neuropeptides used clinically in many countries for stroke, dementia, and TBI. Semax: A synthetic heptapeptide approved in Russia for stroke and cognitive disorders, studied for BDNF-driven neuroprotection.
Which has stronger research evidence, Cerebrolysin or Semax?
This database does not grade compounds. It counts what was run in people: 1 of the 3 studies cited on the Cerebrolysin profile were human work, against 1 of 4 for Semax. Those counts are of our own citation lists and understate any larger literature, and neither is a recommendation.
Are Cerebrolysin and Semax FDA-approved?
Cerebrolysin: Not FDA-approved (approved in 30+ countries). Semax: Not FDA-approved (approved in Russia and Ukraine). PCAC voted to recommend for compounding (July 2026); awaiting FDA rulemaking.
Related posts
Blog articles that cover Cerebrolysin or Semax, newest first.
- Research / Sep 8, 2026 / 9 minPeptides for Sleep: DSIP, Epitalon and Pinealon Against the Evidence
- Safety / Sep 8, 2026 / 9 minPeptide Side Effects by Class: What Is Documented, What Is Anecdotal
- Regulation / Sep 8, 2026 / 9 minFDA Peptide Status in 2026: The Category 2 Removals, the July Votes, and What Actually Changed
Reviewed Sep 2026. This page sets two published records side by side. It is educational, it is not medical advice, and it contains no dosing protocols or recommendations for personal use.