§ Same category · Cognitive peptides
P-21 vs Selank
Side-by-side price comparison across every tracked vendor. Updated every 4–6 hours.
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P-21
0
vendors tracked
Selank
0
vendors tracked
P-21
CNTF-mimetic cognitive peptide
No current listings at 5mg.
Selank
Anxiolytic neuropeptide
No current listings at 5mg.
About P-21
An 11-mer fragment derived from ciliary neurotrophic factor (CNTF), studied for neurogenesis and cognitive enhancement in preclinical models.
About Selank
A synthetic heptapeptide derived from tuftsin, studied in Russian neuropharmacology research for anxiolytic and nootropic effects.