Why P21.
Hippocampal neurogenesis
Memory consolidation support
CNTF pathway activation
Cognitive performance enhancement
About P21.
P21 is a peptide derived from ciliary neurotrophic factor (CNTF) that promotes neurogenesis in the hippocampus and prefrontal cortex. It enhances learning, memory consolidation, and may support recovery from neurodegenerative conditions. Administered intranasally for direct CNS delivery.
How it works.
From intake to your first dose — four straightforward steps.
Complete intake
A brief health questionnaire reviewed by our clinical team. Takes about 5 minutes.
Provider review
A board-certified clinician reviews your history within 48 hours.
Compounded & shipped
Your prescription is compounded in a licensed US pharmacy and shipped to your door.
Ongoing support
Telehealth follow-up to adjust your protocol as needed.
Ready to start P21?
Complete a brief health intake and a licensed provider will review your request within 48 hours. No commitments.
All prescriptions are issued at the sole discretion of licensed providers. Protocol Health Rx does not guarantee prescription approval.