P21 Peptide Therapy
Benefits, Side Effects, Cost & Protocols
P21 is a synthetic peptide derivative of ciliary neurotrophic factor (CNTF) that promotes neurogenesis and cognitive enhancement. It has been studied for its ability to increase brain-derived neurotrophic factor (BDNF) levels and stimulate new neuron formation in the hippocampus.
Clinically Reviewed
Reviewed by Alex Evans, PharmD, MBA · Updated June 2026
Evidence-Based
Sourced from FDA, PubMed & ClinicalTrials.gov · View sources
How P21 Works
BDNF mimetic that may cross the blood-brain barrier and stimulate neurogenesis and cognitive function.
P21 FAQ
What is P21?
P21 is a synthetic peptide designed to mimic the neurotrophic effects of BDNF (Brain-Derived Neurotrophic Factor), researched for cognitive enhancement and neurogenesis.
How does P21 work?
BDNF mimetic that may cross the blood-brain barrier and stimulate neurogenesis and cognitive function.
Is P21 legal to buy?
P21 is sold as a research chemical for laboratory use only. It is not approved for human use by the FDA. Regulations vary by jurisdiction.
Where can I buy P21?
P21 is available as a research compound from verified online vendors. Always verify third-party testing before purchasing.
What category does P21 belong to?
P21 is primarily classified as a cognitive enhancement peptide. Nootropic peptides researched for cognitive function, memory, focus, neuroprotection, and neurogenesis.
What are the research benefits of P21?
P21 has been studied for: Cognitive enhancement, Neurogenesis, Memory research, Learning. BDNF mimic; neurogenesis research.
P21 News
Versatile enhancement of the killing potential of anti-cancer agents achieved by peptide mimetics of the PCNA interface towards specialized DNA polymerases - Nature
Nature · 11 months ago
Targeting Cardiomyocyte PCNA and POLD1 Prevents Pathologic Myocardial Hypertrophy | Circulation Research - American Heart Association Journals
American Heart Association Journals · 8 months ago
An In-Depth Exploration of the P21 Peptide - Georgia Today
Georgia Today · 22 months ago
Type II p21-activated kinases (PAKs) are regulated by an autoinhibitory pseudosubstrate - PNAS
PNAS · 51 months ago
The molecular basis of p21-activated kinase-associated neurodevelopmental disorders: From genotype to phenotype - Frontiers
Frontiers · 39 months ago
News aggregated via Google News. Inclusion does not imply endorsement.
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