Does P21 help with memory?
Possibly — but there are few reports. 100% of 5 people who reported on P21 for memory say it improved. 0% noticed no change and 0% say it got worse.
High-risk compound. Not an approved supplement; serious risks and legal restrictions apply. Nothing here is a recommendation to use it.
Memory: what users report
100%better5 reports · few reports
5 better0 no change0 worse
What people say about P21 and memory
“I have been taking 1mg of p21 for about two weeks, and my concentration has improved markedly but my memory has improved even more so.”
“after injecting 2mg SID for a week something is happening... P21 seems to significantly enhance my memory and linguistic abilities while incorporating a subtle, gradual mood lift”
“my stack is SEMAX, P21, fish oil, curcumin, black seed oil, ALCAR, ALA, alpha GPC, and lions mane”
What the research says
AResearch: Strong271 meta-analyses · 51 trials on PubMed
None of the top reviews we found look specifically at memory. See all research on P21.
Side effects people mention
fatigue 1insomnia 1wired but 1jitteriness 1drowsiness 1
What else is P21 used for?
Based on few reports — treat as anecdotal. Information only — not medical advice. How we count