Nootropic Peptide

Semax

Russian-approved nootropic with limited Western clinical validation.

BDNF/TrkB signalingACTH fragment activityDopaminergic modulationNGF expression

29 D

Evidence Score

ⓘ For informational purposes only — not medical advice.

Score Breakdown

Overview

Semax is a synthetic peptide analog of ACTH(4-10) developed at the Institute of Molecular Genetics of the Russian Academy of Sciences. It is approved in Russia and some CIS countries as a nootropic and neuroprotective agent for conditions including stroke recovery and cognitive impairment. It has not undergone Western regulatory evaluation.

Mechanism of Action

Semax is proposed to act through melanocortin receptor modulation (as an ACTH fragment), BDNF upregulation, and dopaminergic/serotonergic system modulation. The neuroprotective mechanism may involve NGF and BDNF-mediated neuroplasticity pathways.

Evidence Base

Approved in Russia for clinical use (stroke, cognitive impairment, optic nerve disease). Published studies are primarily in Russian-language journals. No Western RCTs or FDA evaluation. Animal studies show neuroprotective effects. Small open-label human studies report cognitive improvements.

Gene Pathway Detail

BDNF and NGF upregulation through TrkB receptor signaling is the most characterized pathway. Melanocortin receptor activation modulates inflammatory and stress-response gene expression. Biomeme monitoring of BDNF pathway genes could provide molecular evidence of nootropic activity.

mRNA Monitoring Insight

BDNF and neurotrophic factor gene targets are monitorable but challenging in peripheral blood samples (CNS-specific effects may not be reflected peripherally). mRNA monitoring value for Semax is limited by the tissue-specificity of its primary effects.

Safety Considerations

Approved for clinical use in Russia, suggesting a degree of evaluated safety in that regulatory framework. No Western regulatory evaluation. Administered intranasally. Long-term safety data outside Russian clinical experience is unavailable.

FAQ

Is Semax legal in the US?

Semax is not FDA-approved and is not scheduled as a controlled substance. It is available through research chemical suppliers and some compounding pharmacies. Its legal status for human use is a gray area.

Quick Facts

Category: Nootropic Peptide
Score: 29/100 (D)
Gene Pathways: 4 characterized

Sources

[1] Semax Neuroprotection — Doklady Biological Sciences 2006

Compare Others

Monitor Your Peptide Response.

Biomeme's transcriptomic platform tracks molecular pathway engagement so you know if your therapy is working.