What is P21 (Cerebrolysin fragment)?

Short peptide derived from a ciliary neurotrophic factor fragment, investigated for neurogenesis and cognitive enhancement. P21 is proposed to stimulate neurogenesis via pathways downstream of CNTF. Most data comes from rodent models showing enhanced hippocampal neurogenesis.

What is P21 (Cerebrolysin fragment) used for?

Reported uses include preclinical neurogenesis and proposed cognitive support. Evidence strength is rated Preclinical — see the evidence section for detail.

How is P21 (Cerebrolysin fragment) dosed?

Commonly referenced dosing is Not characterized, typically research protocols, administered SubQ. This is educational reference only; consult a licensed clinician before use.

What are the side effects of P21 (Cerebrolysin fragment)?

Commonly reported side effects include unknown in humans. This list is not exhaustive.

P21 (Cerebrolysin fragment)

§ 01 Overview

Overview

Short peptide derived from a ciliary neurotrophic factor fragment, investigated for neurogenesis and cognitive enhancement.

Rodent data. No controlled human trials.

§ 02 Mechanism

Mechanism of action

P21 is proposed to stimulate neurogenesis via pathways downstream of CNTF. Most data comes from rodent models showing enhanced hippocampal neurogenesis.

01Preclinical neurogenesis
02Proposed cognitive support

§ 03 Dosing

Dosing protocol

Standard Protocol

Dose Range: Not characterized
Route: SubQ
Frequency: Research protocols

§ 04 Evidence

Evidence & research

Preclinical

Rodent data. No controlled human trials.

FDA Status

Not FDA-approved.

§ 07 Sourcing

Sourcing & supply

Regulatory status

Research-only, no commercial channel

No commercial channel exists. Available only as a research reagent from RUO suppliers. Use in humans is not established.

No suppliers in our directory currently stock this compound. For investigational or research-only compounds, legitimate channels may not exist outside clinical trials.

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§ 09 Safety

Safety & side effects

Side effects

01Unknown in humans

Contraindications

None specified.

§ 10 Questions

P21 (Cerebrolysin fragment) FAQ

What is P21 (Cerebrolysin fragment)?: Short peptide derived from a ciliary neurotrophic factor fragment, investigated for neurogenesis and cognitive enhancement. P21 is proposed to stimulate neurogenesis via pathways downstream of CNTF. Most data comes from rodent models showing enhanced hippocampal neurogenesis.
What is P21 (Cerebrolysin fragment) used for?: Reported uses include preclinical neurogenesis and proposed cognitive support. Evidence strength is rated Preclinical — see the evidence section for detail.
How is P21 (Cerebrolysin fragment) dosed?: Commonly referenced dosing is Not characterized, typically research protocols, administered SubQ. This is educational reference only; consult a licensed clinician before use.
What are the side effects of P21 (Cerebrolysin fragment)?: Commonly reported side effects include unknown in humans. This list is not exhaustive.
Is P21 (Cerebrolysin fragment) legal?: No commercial channel exists. Available only as a research reagent from RUO suppliers. Use in humans is not established. FDA status: Not FDA-approved..