P21
Neurogenic peptide studied for memory and neuroprotection.
For research purposes only. These products are not intended to diagnose, treat, cure, or prevent any disease. By purchasing, you confirm these products will be used for legitimate research purposes.
About P21
P21 is a peptide derived from ciliary neurotrophic factor (CNTF) that promotes neurogenesis — the growth of new neurons — and enhances neurotrophic signaling. It is researched for memory, learning, and neuroprotection, and is often compared with Dihexa as a cognitive-enhancement compound.
Key Benefits
- Promotes neurogenesis
- Enhances neurotrophic signaling
- Studied for memory and learning
- Provides neuroprotection
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Category Ratings
How to Take
Common Side Effects
- Injection site reactions
- Headache
- Mild overstimulation at higher doses
Legal & Regulatory Status
Research use only. Not FDA-approved. Neurogenic/procognitive effects are preclinical (mouse models) only; no human data.
Safety and regulatory details for FDA-approved compounds are drawn from the official product label via openFDA; clinical development status reflects ClinicalTrials.gov. This information is provided for research reference, is not endorsed by the FDA, and may not be complete or current.
Research & Sources
Sources are selected for reliability (peer-reviewed literature, openFDA, ClinicalTrials.gov) but this is a research summary, not medical advice, and may not be exhaustive.
Prices at quality-checked sources · as of July 2026 (3 weeks ago)
- 5mg $61.9810mg $116.97
Observed on each vendor’s public listing — see how these sources are vetted. Peptide Concierge doesn’t sell peptides and isn’t affiliated with any vendor; confirm current pricing at the source.
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