Semax
What is Semax?
Semax is a synthetic peptide originally developed in Russia and studied for its potential effects on the nervous system. Research has explored its role as a neuroprotective and nootropic compound, meaning it may help protect brain cells and support cognitive function. Semax appears to work in part by influencing levels of brain-derived neurotrophic factor (BDNF), a protein involved in learning, memory, and neural plasticity. Studies have investigated its possible applications in areas such as recovery from brain injury, improving focus and attention, and supporting overall brain health.
Potential Benefits Shown in Studies
- Enhanced Memory & Cognitive Function
- Increased BDNF Levels & Neural Plasticity
- Neuroprotection & Brain Cell Support
- Improved Focus, Attention, and Mental Clarity
- Potential Recovery Aid After Brain Injury
Mechanisms of Action
Studies have explored that Semax may help with:
- Supporting memory and learning processes
- Enhancing focus, attention, and mental clarity
- Promoting neuroprotection and recovery after brain injury
- Modulating the brain’s stress response
- Supporting healthy blood flow to the brain
Reducing symptoms of mental fatigue
Research Highlights
Neuroprotective Effects & Memory Enhancement in Alcohol Models
In rodent studies where chronic ethanol caused memory impairment, Selank improved cognitive performance and mitigated reductions in BDNF in the hippocampus and frontal cortex.
Gene Expression Modulation in Stress and Immunity
Selank alters the expression of over 30 genes related to inflammation—such as cytokines, chemokines, their receptors, and immune development regulators like Bcl6—under social stress conditions in mice.
Immune Modulation of Pro-inflammatory Cytokines During Stress
In a social stress model, Selank significantly reduced stress-induced elevations in IL‑1β, IL‑6, TNF‑α, and TGF‑β1, while helping restore levels of anti-inflammatory IL‑4.
Neurotransmitter Regulation & BDNF Expression
Selank’s pharmacological profile includes modulation of GABAergic, serotonergic, and dopaminergic systems, alongside rapid induction of hippocampal BDNF expression, supporting both anxiolytic and neuroplastic effects.
Molecular Structure

Met-Glu-His-Phe-Pro-Gly-Pro
C₃₇H₅₁N₉O₁₀S
813.929 g/mol
