Thymulin vs Cortexin
A detailed comparison to help you understand the differences and choose the right peptide for your research goals.
Thymulin
Thymulin (Facteur Thymique Sérique) is a zinc-dependent nonapeptide hormone produced by thymic epithelial cells. It plays important roles in T-cell differentiation and immune system maturation.
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 | Thymulin | Cortexin |
|---|---|---|
| Mechanism | Requires zinc for biological activity. Promotes T-cell differentiation, modulates cytokine production, and influences neuroendocrine function. Levels decline significantly with age. | 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 | Research protocols vary. Often studied alongside zinc supplementation. Typical research doses in the microgram range. | Clinical protocols: 10mg intramuscularly once daily for 10-20 days. May be repeated after 3-6 month interval. |
| Administration | Subcutaneous or intramuscular injection in research settings. Requires adequate zinc status for activity. | Intramuscular injection. Comes as lyophilized powder requiring reconstitution. Treatment given in courses rather than continuously. |
| Side Effects | Limited data on exogenous administration. Theoretical effects on immune function require monitoring. | Generally well-tolerated. May cause injection site reactions or mild allergic responses in sensitive individuals. |
| Best For |
Key Differences
Unique to Thymulin:
Unique to Cortexin:
Detailed Analysis
Cortexin and Thymulin are used for different purposes and have limited overlap in their applications.
Which Should You Choose?
Choose Cortexin for Recovery & Healing, Cognitive Performance. Choose Thymulin for Immune Support, Anti-Aging & Longevity.