Cognitive · Cognitive peptide (research)
P21
- Drug class
- Cognitive peptide (research)
- Status
- Compounded (503A)
- Also known as
- p-21, cntf peptide, cntf-derived peptide
- Reviewed
- 2026-06-01 · Dr. Ana Lisa Carr, MD
What P21 is studied for
- Neurogenesis research (research)
- Cognitive support (research)
- Neuroprotection (research)
Mechanism of action
P21 is being studied in the cognitive category. Synthetic CNTF-derived peptide studied for hippocampal neurogenesis. Mechanism of action varies by study model; refer to the kindr clinical library for a deeper writeup.
Frequently asked questions
What is P21?
P21 is a cognitive peptide. Synthetic CNTF-derived peptide studied for hippocampal neurogenesis.
What is P21 studied for?
Published research has examined P21 for neurogenesis research, cognitive support, neuroprotection. Human clinical evidence varies by indication.
Is P21 FDA-approved?
No. P21 is not FDA-approved for the indications listed. It is available compounded by 503A pharmacies under clinician supervision, or for international research use only on this catalog.
How is P21 used in research?
Protocols vary by study. P21 is typically administered subcutaneously in research settings. No validated human therapeutic dose exists outside FDA-approved indications.
What are the known risks?
Long-term human safety data for P21 is limited. Theoretical risks vary by mechanism. Any human use should be supervised by a licensed clinician.