Semax vs Selank
Which has more real evidence behind it? This compares how well each has been tested, not which one works better.
This page has not yet been reviewed by a credentialed medical professional. It is educational and is not medical advice.
Both are at the same evidence level (human trials), but Selank has more randomized trials on PubMed (2 vs 1).
The research, side by side
Counts come from PubMed and ClinicalTrials.gov searches and can include studies that only mention a peptide. Bars use a log scale.
| Semax | Selank | |
|---|---|---|
| What people use it for | Focus, memory and stroke recovery. Developed in Russia and used there as a medicine. | Anxiety and stress. Also developed in Russia. |
| Approved as a medicine | Approved in Russia; not authorized in the US or Canada | Used in Russia; not authorized in the US or Canada |
| What the evidence says | Human studies exist, mostly from Russia and of mixed quality. Not approved in the US or Canada. | Limited human studies, mostly from Russia. Not approved in the US or Canada. |
| In tested sport | Check the WADA list | Check the WADA list |
Common questions
Which is better, Semax or Selank?
No study compares them head to head for most uses, so this page compares how much evidence exists, not which works better. Both are at the same evidence level (human trials), but Selank has more randomized trials on PubMed (2 vs 1).
Is Semax or Selank approved?
Semax: Approved in Russia; not authorized in the US or Canada. Selank: Used in Russia; not authorized in the US or Canada.
Can you take Semax and Selank together?
We found no controlled studies testing Semax and Selank together, so the effects and safety of combining them are unknown. Talk to a clinician.
Keep exploring
Educational only, not medical advice. "What people use it for" describes common claims, not recommendations.