Side effects and watch-outs
- Extremely limited human safety data
- Potential CNS overstimulation
- Headache
- Nasal irritation
- Unknown long-term effects
Peptide / Cognitive
P21 Peptide
CNTF analog. Stimulates hippocampal neurogenesis without receptor downregulation. Experimental — very limited human data. Used intranasally.
Educational reference only. This page does not diagnose, prescribe, or replace care from a licensed professional. Laws, availability, and clinical appropriateness vary by location.