Category · 3 peptides
Nootropic & mood peptides
Russian-pharmacology favorites with passionate fans and sparse Western trials. Pep reads what little data exists.
Evidence is mostly regional
Selank and semax are approved in some countries on limited trial data.
Effects are subtle
Anxiolytic and focus claims are modest where measured at all.
Quality varies wildly
Nasal-spray sourcing and dosing are inconsistent across vendors.
Every Cognitive peptide we've ruled on
See all categories →DSIP is a naturally occurring nine-amino-acid peptide commonly researched for sleep and stress. Its human data is old, small, and inconsistent, and it is not FDA-approved; it is sold for laboratory research use only, and whether it reliably affects sleep in people is still being studied.
Selank is a synthetic tuftsin-derived peptide commonly researched for anxiety and focus. Most of its human data comes from small, mostly Russian trials, and it is not FDA-approved; it is sold for laboratory research use only, and its effects in broader populations are still being studied.
Semax is a synthetic nootropic peptide, developed in Russia, commonly researched for focus, memory, and neuroprotection. It is not FDA-approved and is sold for laboratory research use only; effects and long-term safety in people are still being studied.