What are the side effects of P-21?
The most commonly reported P-21 side effects are limited human data, generally well tolerated in animal models. Most are mild and tend to be dose dependent. It is generally avoided with pregnancy / nursing. Human clinical evidence for P-21 is limited, so this reflects reported and observed effects, not a complete safety profile.
Reported P-21 side effects
- Limited human data
- Generally well tolerated in animal models
Who should avoid it
- Pregnancy / nursing
- Anyone risk-averse to pre-clinical compounds
References
- Prevention of dendritic and synaptic deficits and cognitive impairment with a neurotrophic compound — Baazaoui N, Iqbal K. Alzheimer's Research & Therapy, 2017
- Alzheimer's Disease: Challenges and a Therapeutic Opportunity to Treat It with a Neurotrophic Compound — Baazaoui N, Iqbal K. Biomolecules, 2022
Pepdex is an editorial reference, not medical advice. Peptides vary in legal and approval status by country, many are research compounds without full human safety data. Talk to a qualified clinician before starting anything.
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Last updated 2026-06-06.