Cortexin
Cortexin is a pharmaceutical-grade, full-spectrum neuropeptide complex extracted directly from the cerebral cortex of young animals. A towering pillar of Eastern bloc neurology, it is clinically deployed to forcefully rehabilitate catastrophic brain damage, including severe strokes, traumatic brain injuries (TBI), and advanced pediatric neurodevelopmental delays. It provides an immediate, massive influx of perfectly balanced neural building blocks and master regulatory peptides directly to the damaged CNS.
Quick Stats
Scientific Data
Mechanism of Action
Cortexin is a polypeptide preparation derived from the cerebral cortex of cattle (analogous to Cerebrolysin but bovine-cortex source). It contains a complex mixture of low-molecular-weight neuropeptides and amino acids that provide neurotrophic factor signaling (BDNF, NGF, CNTF analogs) and neuroprotection.
Cortexin promotes neurogenesis, synaptogenesis, and recovery from ischemic neurological injury. It is approved in Russia and several Eastern European countries for stroke recovery, TBI, cognitive decline, and childhood neuro-developmental disorders. Its primary therapeutic difference from Cerebrolysin is the bovine cortex source (vs. porcine brain for Cerebrolysin) and its availability in Russia.
Source: PMID: 17436040
Background & History
Cortexin was developed at the S.M. Kirov Military Medical Academy in St. Petersburg, Russia, and approved for medical use since 1999. It is one of the most widely prescribed neuropeptide preparations in Russia — used across the spectrum from pediatric neurodevelopmental delay to adult stroke recovery to geriatric cognitive decline. The preparation is a complex mixture of low-molecular-weight polypeptides (<10 kDa) extracted from bovine or porcine cerebral cortex, combined with amino acids, vitamins, and trace minerals. Over 100,000 patients have been treated in Russian clinical practice.
Research Use Cases
- ✓Stroke rehabilitation (acute and chronic phase)
- ✓Traumatic brain injury recovery
- ✓Age-related cognitive impairment
- ✓Pediatric neurodevelopmental support
- ✓Epilepsy adjunct therapy
Dosing Protocol
| Typical Dose | 5-10 mg/day IM |
| Frequency | 1× daily for 10-20 days |
| Half-Life | ~30-60 minutes (estimated) |
| Common Vial Sizes | 5 mg, 10 mg |
Dosing Protocols
Standard Protocol
Body-Weight Dosing Reference
Estimated doses extrapolated from the published research range of 5000–10000 mcg/day (referenced to 70 kg / 154 lb). These are approximations — consult a qualified healthcare provider for personalised guidance.
| Weight | Low Dose | Target Dose | High Dose |
|---|---|---|---|
| 120 lb(54 kg) | 3857 mcg | 5786 mcg | 7714 mcg |
| 140 lb(63 kg) | 4500 mcg | 6750 mcg | 9000 mcg |
| 160 lb(73 kg) | 5214 mcg | 7821 mcg | 10429 mcg |
| 180 lb(82 kg) | 5857 mcg | 8786 mcg | 11714 mcg |
| 200 lb(91 kg) | 6500 mcg | 9750 mcg | 13000 mcg |
| 220 lb(100 kg) | 7143 mcg | 10714 mcg | 14286 mcg |
| 250 lb(113 kg) | 8071 mcg | 12107 mcg | 16143 mcg |
💉 For exact syringe units based on your vial concentration, use the Cortexin Reconstitution Calculator →
Administration
Expected Timeline
Who Is It For?
Cognitive Enhancement / Neuroprotection
LowApproved in Russia for cognitive decline and neurology. Limited RCT data vs. Cerebrolysin.
Stroke / TBI Recovery
LowApproved in Russia for neurological rehabilitation. Fewer clinical trials than Cerebrolysin.
Reconstitution Example
Safety & Considerations
Approved in Russia. Intramuscular only. Generally well-tolerated. Manufacture must meet veterinary-derived peptide standards. Limited data outside Russia.
Regulatory & Legal Status
Not currently on the WADA 2026 Prohibited List. Policies may change — verify before competition.
Research Chemical
US Compounding: Not eligible / not available
⚠️ This information is for educational purposes only and may not reflect the most current regulatory updates. Always verify with official FDA, WADA, and jurisdiction-specific sources before use.
Interactions & Contraindications
Animal-derived preparation — potential allergenic risk. IM injection route only. No significant drug interactions documented in Russian clinical data. Can be combined with standard neurological medications.
Synergies & Common Stacks
Cortexin provides broad neuroprotection and membrane stabilization while P21 specifically drives hippocampal neurogenesis — complementary neuroprotective approaches for cognitive decline.
Cortexin (complex neuropeptide preparation, IM injection) + Semax (targeted ACTH fragment, intranasal) provide multi-pathway CNS support through different mechanisms and routes.
Dosing Quick Reference
Frequently Asked Questions
What is the difference between Cortexin and Cerebrolysin?▼
References
- Khachanova NV et al. “"Cortexin in neurological practice: a systematic review".” Zhurnal Nevrologii i Psikhiatrii (2021). PMID: 33580928
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