Cortexin

Also known as: Cortical Neurotrophic Peptide

Overview

Cortexin is a neuroprotective peptide that enhances brain metabolism, reduces oxidative stress, and supports cognitive functions like memory and learning. It is used for stroke recovery, neurodevelopmental disorders, and neurodegenerative conditions, offering protection and repair for neurons. Cortexin is a neurotrophic peptide extracted from animal cerebral cortex tissue, composed of low molecular weight polypeptides, amino acids, vitamins, and trace elements. It acts as a nootropic, neuroprotective, antioxidant, and tissue-specific agent. Cortexin is used to treat various neurological disorders, improve cognitive functions, and enhance the brain's resilience to stress. Its mechanisms promote neuroprotection, improve learning and memory, and support brain metabolism.

Benefits

- Enhanced cognitive function

- Improved stroke recovery

- Helps neurodevelopmental disorders

- Supports neurodegenerative conditions

- Increases stress resilience

- Aids neurological recovery

Consider This Peptide If You Want To

- Enhance cognitive function, memory, and mental clarity for neuroprotection and brain optimization

- Support recovery from stroke, TBI, or neurodegenerative disease

Dosage & Administration

Dosage Guidelines

Recommended Dosage

• Amount:10 mg

• Frequency:daily

• Duration:1 week

• Rest Period:24 weeks

• Time of Day:morning

• Ingestion:intramuscular

Administration Routes:Intramuscular

Research Findings on Dosage:

Intramuscular Injection:

• Commonly Reported Dosage for Adults:

◦ 10 mg once daily for 10 days.

◦ Repeat the course after 3-6 months if necessary.

• Stroke Recovery:

◦ 10 mg twice daily for 10 days (morning and afternoon), repeat the course after 10 days.

Mechanism of Action

Mechanism of Action

How this peptide works in the body

Neuroprotection:

Cortexin reduces oxidative stress by inhibiting lipid peroxidation and neutralizing free radicals, preventing damage to neuronal membranes. It also modulates glutamatergic signaling, reducing excitotoxicity caused by excessive NMDA receptor activation, which can lead to neuronal apoptosis and neurodegeneration.

Cognitive Enhancement:

By optimizing the balance of excitatory and inhibitory neurotransmitters, including dopamine, serotonin, and GABA, Cortexin enhances synaptic plasticity and cognitive functions. This supports memory consolidation, attention regulation, and learning capacity, making it beneficial for neurodevelopmental and neurodegenerative conditions.

Antioxidant Activity:

Cortexin enhances cellular antioxidant defenses, improving neuronal survival under oxidative stress and hypoxic conditions. It increases superoxide dismutase (SOD) and glutathione (GSH) levels, which reduce reactive oxygen species (ROS)-induced damage in brain tissue.

Tissue-Specific Effects:

Cortexin stimulates neurotrophic factor signaling, promoting neuronal growth and repair in the central and peripheral nervous systems. It accelerates axonal regeneration and synapse formation, enhancing neural network stability and recovery after injury.

Mitochondrial Function:

Cortexin restores ATP synthesis in neurons by improving mitochondrial respiration and oxidative phosphorylation efficiency, ensuring adequate cellular energy production. This is critical for neuronal survival during ischemia, injury, or degenerative processes.

Consider Stacking With

- Cerebrolysin

- Selank/Semax

- Dihexa

Side Effects & Cautions

Common Side Effects

- Mild injection site reactions (redness, swelling)

- Allergic reactions (rash, itching, angioedema)

- Nervousness, insomnia, or tachycardia

Cautions

- Contraindicated in pregnancy and lactation

Research & References

Research Highlights

Stroke and Ischemia:

Reduced brain lesion size by up to 40% and improved recovery in ischemic stroke models.

Neurodevelopmental Disorders:

Improved speech and cognitive function in children with developmental delays.

Alzheimer's Disease:

Demonstrated reduction in amyloid-beta and tau pathology in preclinical studies.

ATP Restoration:

Cortexin restores ATP levels in neurons, a critical factor for survival under ischemic conditions.

References

Granstrem, O.K., et al. "Neuroprotective Properties of Cortexin in Ischemic Stroke." Terra Medica Nova, 2008

Sorokina, E.G., et al. "ATP Synthesis Restoration in Neurons by Cortexin." Experimental Biology and Medicine, 2007

Pinelis, V.G., et al. "Anti-Apoptotic Effects of Cortexin in Glutamate Toxicity." European Peptide Symposium Proceedings, 2008

Skoromets, A.A., et al. "Clinical Efficacy of Cortexin in Neuroprotection." Journal of Neurology and Psychiatry, 2008