Cerebrolysin vs Cortexin
A detailed comparison to help you understand the differences and choose the right peptide for your research goals.
Cerebrolysin
Cerebrolysin is a mixture of low-molecular-weight neuropeptides and free amino acids derived from purified pig brain proteins. It is approved in many countries for stroke, traumatic brain injury, and dementia.
Full details →Cortexin
Cortexin is a polypeptide complex derived from pig brain cortex, used clinically in Russia and Eastern Europe for neurological conditions including stroke recovery, traumatic brain injury, and cognitive decline.
Full details →Side-by-Side Comparison
| Aspect | Cerebrolysin | Cortexin |
|---|---|---|
| Dose Range | 2150 mg–4300 mg | 10 mg–20 mg |
| Frequency | 1x daily | 1x daily |
| Cycle Length | 1–2 weeks | 1–2 weeks |
| Route | intramuscular | intramuscular |
| Mechanism | Contains multiple neurotrophic factors that promote neuroplasticity, reduce neuronal apoptosis, and support synaptic function. Has both neurotrophic and neuroprotective properties. | Contains a mixture of neuropeptides and amino acids that support neuronal metabolism, provide neuroprotection, and enhance synaptic transmission. Specific mechanisms not fully characterized. |
| Typical Dosage | Clinical dosing: 10-30ml IV daily for acute conditions. Research use: 5-10ml IM daily for cognitive enhancement. Treatment courses typically last 10-20 days. | Clinical protocols: 10mg intramuscularly once daily for 10-20 days. May be repeated after 3-6 month interval. |
| Administration | Administered via intramuscular or intravenous injection. IV administration is typically used in clinical settings. IM can be used for research purposes. | Intramuscular injection. Comes as lyophilized powder requiring reconstitution. Treatment given in courses rather than continuously. |
| Side Effects | Generally well-tolerated. May cause dizziness, headache, sweating, or injection site reactions. Rare cases of agitation or confusion. | Generally well-tolerated. May cause injection site reactions or mild allergic responses in sensitive individuals. |
| Best For |
What They Have in Common
Cerebrolysin, Cortexin are both commonly used for:
Which Has Stronger Evidence?
- Recovery & Healing: Cerebrolysin has stronger research support.
- Cognitive Performance: Cerebrolysin has stronger research support.
| Goal | Cerebrolysin | Cortexin |
|---|---|---|
| Recovery & Healing | high | medium |
| Cognitive Performance | high | medium |
Key Studies
Cerebrolysin
- Cerebrolysin Ameliorates Age-Induced Dendritic Spine Degeneration and Memory Decline in C57BL6 Mice.
Neurochemical research, 2025
- Is Cerebrolysin Useful in Psychiatry Disorders?
Biomedicines, 2025
- Cerebrolysin ameliorates ketamine-mediated anxiety and cognitive impairments via modulation of mitochondrial function and CREB/PGC-1α pathway.
Molecular brain, 2025
Cortexin
- [Cortexin in the comprehensive therapy of alcoholic encephalopathy].
Zhurnal nevrologii i psikhiatrii imeni S.S. Korsakova, 2026
- Cortexin modulates OPG/RANK/RANKL and TRPC1 expression in cerebral ischemia-reperfusion injury.
Neurological research, 2026
- Neurotropic Effects of Cortexin on Models of Mental and Physical Developmental Delay.
Biomedicines, 2025
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