Semax vs Selank: how does the research compare?
Both compounds are reviewed against the same standard: what has been studied, in whom, and what the studies reported. Human evidence and preclinical evidence are kept separate throughout.
Research education only — not medical advice
Semax
Synthetic ACTH fragment analog
- Human research
- Limited
- Preclinical research
- Moderate
Limited — regional research base.
In the compound indexSelank
Synthetic heptapeptide (tuftsin-based)
- Human research
- Limited
- Preclinical research
- Moderate
Limited — regional research base.
In the compound indexThe Wize summary
- What each is
Semax
Synthetic ACTH fragment analog
Selank
Synthetic heptapeptide (tuftsin-based)
- Human evidence
Semax
limited
Selank
limited
- Preclinical evidence
Semax
moderate
Selank
moderate
- What remains unknown
Semax
Limited — regional research base.
Selank
Limited — regional research base.
Bottom line
Human research for Semax is rated limited, and for Selank it is rated limited. That rating describes how much human research exists — not whether either compound works, and not whether either is safe.
Detail by dimension.
Compound class
- Semax
- Synthetic ACTH fragment analog
- Selank
- Synthetic heptapeptide (tuftsin-based)
Mechanism being investigated
- Semax
- Synthetic fragment analog of ACTH(4-10); studied (mainly in Russia) for cognitive effects and reported BDNF elevation in animal models.
- Selank
- Synthetic peptide based on the natural immunomodulatory peptide tuftsin; developed and studied mainly in Russia for anxiolytic-like effects without sedation.
Receptor targets
- Semax
- Not established (BDNF-related pathways proposed)
- Selank
- Not established (BDNF-related pathways proposed)
Research areas
- Semax
- Cognition, Inflammation
- Selank
- Cognition, Immune research, Inflammation
Half-life, as reported
- Semax
- Minutes (intranasal); not firmly established
- Selank
- Minutes (intranasal); not firmly established
Human research
- Semax
- Limited — Small regional trials report cognitive effects; independent replication is limited.
- Selank
- Limited — Small trials (mostly Russian) report anxiolytic effects; independent replication is limited.
Preclinical research
- Semax
- Moderate — Animal studies report BDNF changes and neuroprotective effects.
- Selank
- Moderate — Animal studies report anxiolytic-like and immune effects.
Mechanistic research
- Semax
- Limited — Mechanism not firmly established.
- Selank
- Limited — Mechanism proposals (BDNF, GABA modulation) are not firmly established.
What studies reported
- Semax
- Small trials report cognitive effects; animal models show BDNF elevation and neuroprotection.
- Selank
- Small trials report anxiety reduction without sedation; animal studies report effects on BDNF and immune markers.
Reported adverse effects in studies
- Semax
- Reported: generally mild in small trials; data are limited.
- Selank
- Reported: generally mild in small trials; data are limited.
Research maturity
- Semax
- Limited — regional research base.
- Selank
- Limited — regional research base.
Study records.
Published research already verified into the Wize study library. Each record carries its own design, findings, and limitations.
Semax
No verified study record for Semax is in the Wize library yet. Records are added only once the publication has been checked against its source.
Selank
No verified study record for Selank is in the Wize library yet. Records are added only once the publication has been checked against its source.
Sources & research.
These are search and registry entry points, not endorsements. Every finding above should be checked against the primary publication before it is relied on.
What this comparison cannot settle.
A comparison of research is not a comparison of treatments. Where a study has directly compared Semax with Selank, it appears above with a link to its record; where none appears, we have not identified one. Neither compound's evidence base can say which is more appropriate for any person, at any dose, or in any situation — and the letter on each card measures how much human research exists, not how well anything works.
Continue researching.
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