Reviewed by PeptideGuide Research Team|Last updated February 15, 2026
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Side-by-Side Comparison
Property
P21
Dihexa
Name
P21
Dihexa
Peptide Class
Nootropic peptide
Nootropic
Category
Cognitive and Nootropic
Cognitive and Nootropic
Dosage Range
N/A
N/A
Half-Life
N/A
N/A
FDA Status
Not Approved
Not Approved
Safety Rating
Research Only
Research Only
Cost Estimate
N/A
N/A
P21
P21 is a nootropic peptide primarily explored for its potential to enhance cognitive functions and improve memory. It is categorized under cognitive a...
View full profile →Dihexa
Dihexa is a small, orally active peptide known for its potential cognitive-enhancing and neuroprotective properties. It is primarily researched for it...
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