Cognitive
Nootropics, focus, and neuroprotection.
About cognitive peptides
Cognitive peptides include Semax, Selank, and Cerebrolysin — research compounds explored for focus, memory, and neuroprotection. This category is smaller than weight-loss or recovery, but reviews are concentrated on a handful of compounds with passionate followings.
Cognitive peptides are typically delivered as a nasal spray, which is unusual in the peptide market and worth noting when comparing vendors — not all sellers offer the right form factor.
7 peptides in this category
Sorted by review volume — the compounds people are researching most.
Selank
Russian-origin nootropic peptide researched for anxiety, focus, and immune support.
Semax
Nootropic peptide researched for cognitive enhancement, BDNF upregulation, and stress resilience.
P21
CNTF-derived peptide researched for neurogenesis, cognition, and BDNF upregulation.
PE-22-28
TREK-1 channel blocker researched for fast-acting antidepressant effects.
Dihexa
Hepatocyte growth factor mimetic. Researched for synapse formation and cognitive enhancement.
N-Acetyl Selank
More stable acetylated form of Selank. Researched for anxiety, focus, and immune support.
N-Acetyl Semax Amidate
Stabilized Semax variant. Researched for nootropic effects, neuroprotection, and BDNF upregulation.
What to know before buying
- Most cognitive peptides are dosed as nasal spray, not injection
- Effects are often subtle and protocol-dependent
- Vendors with consistent batch-to-batch testing earn the strongest reviews here