Cortagen vs P21
Side-by-side comparison of key properties, dosing, and research.
- Summary
- Cortagen is a synthetic tetrapeptide (Ala-Glu-Asp-Pro) developed at the St. Petersburg Institute of Bioregulation as a cardioprotective and vascular bioregulator. It stimulates repair of cardiac and vascular tissue, with demonstrated benefits for coronary artery disease, atherosclerosis, and cardiac aging.
- P21 is a synthetic peptide derived from CNTF (ciliary neurotrophic factor) that promotes hippocampal neurogenesis, enhances memory and spatial learning, and may reduce amyloid-beta pathology. It is used as a neurogenic and cognitive enhancer with potential anti-Alzheimer's applications.
- Half-Life
- Short peptide half-life; gene regulatory effects persist beyond peptide clearance
- Not well characterized; likely short, but neurogenic effects persist long after administration
- Admin Route
- SubQ, IM, Oral
- SubQ, Intranasal
- Research
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- Typical Dose
- 10 mg SC or IM daily
- 100–500 mcg
- Frequency
- Once daily
- Once daily
- Key Benefits
- Cardioprotective — protects cardiac tissue from ischemic damage
- Promotes cardiac regeneration and repair
- Improves vascular endothelium function
- Reduces atherosclerosis progression
- Anti-aging effect on heart muscle cells
- Improves cardiac output and exercise capacity
- Reduces oxidative stress in cardiovascular tissue
- May reduce arrhythmia frequency
- Promotes hippocampal neurogenesis
- Enhances spatial memory and learning
- Increases BDNF expression
- Reduces amyloid-beta plaque formation (animal models)
- Anti-tau pathology potential
- Cognitive enhancement without stimulant effects
- Potential therapeutic for Alzheimer's and cognitive aging
- Side Effects
- Excellent safety profile
- Mild injection site reactions
- Rare: transient hypotension
- Rare: mild arrhythmia at initiation in cardiac patients
- Generally well tolerated in animal studies
- Limited human clinical data
- Injection site reactions
- Potential mild fatigue at initiation
- Stacks With
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