P-21 Protocol
Dosing & Research
Last Updated: April 22, 2026
Neuroprotection, Neurogenesis and BDNF-linked research, Cognition/memory studies, Alzheimer-related models
Half-Life
Not Well Characterized
Administration
Intranasal
Frequency
1-2x daily
How It Works
- Neuroprotection
- Neurogenesis and BDNF-linked research
- Cognition/memory studies
- Alzheimer-related models
Dosing Structure
Dose
500 mcg - 1 mg
Frequency
1-2x daily
Notes
Break: 2-4 weeks between cycles.
Example Protocols
Dose: 500 mcg - 1 mg
Frequency: 1-2x daily
Duration: 4-6 weeks
Off Period: Not listed
Protocol Notes
•
Break: 2-4 weeks between cycles.
Research & Studies
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