Is P21 FDA approved?
No. This profile records P21 as not FDA approved and for research use only.
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Review the regulatory and source details on this page for the current context.
Healing CATEGORY
P21
THE NEUROGENESIS BOOSTER
Neurotrophic Peptide P21; CNTF Analog
P21 is an engineered peptide based on ciliary neurotrophic factor (CNTF) that can cross the blood-brain barrier and promote neurogenesis, the growth of new brain cells. It boosts BDNF (brain-derived neurotrophic factor) and has shown promise for cognitive enhancement, Alzheimer's prevention, and stroke recovery.
P21
P21
P21
P21 Evidence Snapshot
How these guides are reviewed
REGULATORY STATUS
Not FDA approved · research use only
DOSING GUIDANCE
Reviewed by our clinical team
LINKED EVIDENCE
1 research sources
CONTENT UPDATED
Aug 28, 2026
Dose and schedule recommendations shown below come from The Peptide App Clinical Team. Research links are provided so readers can inspect the supporting evidence directly. Review the sources.
Quick Answers About P21
What dose does The Peptide App Clinical Team recommend for P21?
Dose: 10 mg daily (subcutaneous, intramuscular, or oral).
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Schedule: daily. Cycle: 8 weeks on, 8 weeks off. This is clinical-team guidance for reference and does not replace individualized instructions from a licensed clinician.
What research supports this P21 guide?
This guide links to 1 curated or current research sources.
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Open the research section to inspect the source titles, publication details, study types, and available abstracts directly.
Studied Effects & Mechanisms
Neurogenesis
Promotes growth of new neurons in the hippocampus
BDNF Boost
Upregulates brain-derived neurotrophic factor
Anti-Amyloid
Reduces amyloid-beta and tau pathology
Synaptic Plasticity
Enhances NMDA receptor activity for learning
Those concerned about cognitive decline
People wanting to enhance memory and focus
Those with family history of Alzheimer's
Stroke recovery patients
P21 Research
Live research temporarily unavailableThe live research feed did not return papers for this page. The curated references below remain available for crawlable source context.
RESEARCH REFERENCES