Cognitive & Neurotrophic · Research deep dive
P21: the cited literature
Every study referenced in the P21 monograph, with plain-language context, PubMed links to read each paper yourself, and how the compound appears in the dosing literature.
How this compound is studied
Across the dosing literature, P21 is studied at 500 mcg – 1 mg per administration, typically once daily. The reference walkthrough below maps each citation to what it actually showed.
References covered
A neurotrophic peptide mimetic rescues cognitive impairment in Alzheimer models
Neurobiol. Aging, 2013
The full walkthrough is for subscribers
Unlock the evidence grading, what each study actually found, how the trials dosed it, reported safety signals, open questions, and PubMed links for P21.