Compare · Nootropic peptide
Dihexa vs Selank
Both are nootropic peptide compounds. Here's how they line up on the evidence — graded the same way.
| Dihexa | Selank | |
|---|---|---|
| Evidence | Animal only | Preliminary human |
| Class | Nootropic peptide | Nootropic peptide |
| Summary | An angiotensin IV-derived oligopeptide studied in animals for synaptogenesis and cognition; it has never been tested in humans, and its foundational mechanism paper was retracted in 2025. | A Russian-developed anxiolytic peptide approved in Russia but unproven by Western standards; human trials are small, early, and single-country. |
| Full profile → | Full profile → |
Dihexa
Dihexa is a small angiotensin IV-derived peptide that drew attention for animal data on dendritic spine growth and learning, plus an eye-catching claim that it is many orders of magnitude more potent than BDNF. It is sold online as a nootropic, but the honest picture is far more cautious than the…
Selank
Selank is a synthetic peptide developed in Russia and marketed online as an anti-anxiety and "nootropic" compound. The human evidence is real but thin, almost entirely Russian, and small in scale.