About Cortexin
Polypeptide bioregulator from bovine cortex; modulates neurotransmitter activity; activates GABA and dopamine systems; reduces excitotoxicity; stimulates neuronal repair
Cortexin is a polypeptide bioregulator derived from porcine cerebral cortex, used clinically in Russia and Eastern Europe as a neuroprotective and nootropic agent for stroke, traumatic brain injury, and chronic cerebrovascular disorders. It contains a complex mixture of tissue-specific neuropeptides, amino acids, and microelements proposed to support neuronal survival, reduce excitotoxic damage, and promote neurotrophic factor expression in injured brain tissue. Russian clinical trials have examined cortexin in acute ischemic stroke rehabilitation and other neurological conditions, with results suggesting potential benefit in functional recovery, though studies are predominantly published in Russian-language journals with limited methodological transparency by international standards. Cortexin is not FDA-approved; it is a licensed prescription drug in Russia and several post-Soviet states, where it has regulatory approval for neurological indications. Cortexin administration: in clinical settings where it is approved, cortexin is administered by intramuscular injection, typically as a 10 mg dose reconstituted in saline or procaine. Clinical courses in Russian practice involve daily injections over 10-day cycles, repeated 1–2 times per year for chronic neurological conditions. This administration pattern is common to several Russian polypeptide bioregulators, including cerebrolysin — another porcine-derived peptide mixture with a broader international clinical trial dataset — and cortagen, a cardiac-focus bioregulator from the same pharmacological class. Cortexin is the cerebral-cortex-specific member of this class; cortagen targets cardiovascular tissue, and thymalin targets thymic/immune tissue. Provider availability for cortexin outside Russia is limited compared to peptides with international regulatory approvals; it is occasionally carried by compounding pharmacies and specialized nootropic suppliers. The PeptideBase cognitive peptides directory lists verified providers who carry neuroprotective peptide compounds.
Cortexin Benefits & Research Areas
Research Signals
Population research notes
These signals reflect research interest areas, not treatment indications.
Regulatory & Evidence
Risk Profile
Generally considered lower risk in research contexts. Risk profile varies by individual — review contraindications before use.
Regulatory Status
- Availability Status
- Research Only
- FDA Status
- Not Evaluated
Russian polypeptide preparation from cattle cerebral cortex. Registered in Russia for neurological conditions. No FDA approval, no NDA or IND, not on any FDA list. Research chemical in US.
Regulatory status reflects publicly available information and may change. This is not legal or medical advice.
Research Sources
3 sources cited · 3 moderate
1 RCT · 2 Reviews
Sex Differences in Affective Disorders: A Developmental Neuroscience Framework on the Role of Puberty.
Annu Rev Clin Psychol · 2026
# Summary This research found that pubertal hormones modulate the development of brain circuits involved in emotion processing—including the amygdala, nucleus accumbens, and prefrontal cortex—in sex-specific ways that increase vulnerability to anxiety and depression. The study demonstrated that in girls, these hormonal effects may heighten neural sensitivity to threat while reducing reward responsiveness during a critical period of brain development, potentially explaining why females experience roughly twice the risk of affective disorders compared to males during adolescence.
Evaluation of the efficacy and safety of cortexin in the complex rehabilitation of verticalization in patients with ischemic stroke in the acute period
Zhurnal nevrologii i psikhiatrii imeni S.S. Korsakova · 2019
Research in 90 patients with hemispheric ischemic stroke found that intramuscular cortexin 20 mg daily for 10 days combined with early verticalization produced the most complete regression of neurological deficits and cardiac autonomic neuropathy during the acute period compared with early verticalization alone or standard therapy without verticalization.
Neuroprotective effects of peptides bioregulators in people of various age
Advances in gerontology · 2013
This review compares polypeptide neuroprotectors cortexin and cerebrolysin with short regulatory peptides semax and pinealon, summarizing their clinical applications in elderly patients and the proposed cellular and molecular mechanisms underlying their neuroprotective activity including neurotransmitter modulation, neuroplasticity support, and cognitive function across aging populations.
Cortexin Side Effects & Safety Considerations
Generally considered lower risk in research contexts. Individual response varies — review all considerations before use.
Reported contraindications & considerations
Consult a qualified healthcare professional before making any health decisions. This information is educational only and does not constitute medical advice.
Where to Buy Cortexin — Providers & Availability
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Questions to Ask Your Provider
Frequently Asked Questions — Cortexin
Cortexin is a polypeptide bioregulator derived from porcine cerebral cortex, used clinically in Russia and Eastern Europe as a neuroprotective and nootropic agent for stroke, traumatic brain injury, and chronic cerebrovascular disorders. It contains a complex mixture of tissue-specific neuropeptides, amino acids, and microelements proposed to support neuronal survival, reduce excitotoxic damage, and promote neurotrophic factor expression in injured brain tissue.
neuroprotection and neuronal survival support, cognitive function improvement — documented in Russian clinical settings, antioxidant activity in CNS tissue, EEG normalization and neurotrophic factor expression.
Research on Cortexin primarily documents effects related to neuroprotection and neuronal survival support and cognitive function improvement — documented in Russian clinical settings and antioxidant activity in CNS tissue and EEG normalization and neurotrophic factor expression. These are areas covered in preclinical and clinical literature — individual response varies and effects depend on context of use.
Reported contraindications and considerations for Cortexin include bovine protein allergy. This is educational information only — consult a qualified healthcare professional before use.
4 providers in the directory currently offer Cortexin.
# Summary This research found that pubertal hormones modulate the development of brain circuits involved in emotion processing—including the amygdala, nucleus accumbens, and prefrontal cortex—in sex-specific ways that increase vulnerability to anxiety and depression. The study demonstrated that in girls, these hormonal effects may heighten neural sensitivity to threat while reducing reward responsiveness during a critical period of brain development, potentially explaining why females experience roughly twice the risk of affective disorders compared to males during adolescence.