Semax

What Is Semax?

Semax is a synthetic peptide derived from the ACTH (adrenocorticotropic hormone) fragment 4‑10, modified to enhance stability and biological activity. Developed in Russia, it has been investigated as a neuroprotective and nootropic agent with potential applications in cognitive enhancement, anxiety reduction, and recovery from neurological injury. Unlike conventional psychotropic drugs, Semax exerts its effects through neurotrophic and neuromodulatory pathways rather than direct sedation or stimulation.

Mechanism of Action

Semax modulates the expression of brain‑derived neurotrophic factor (BDNF) and other neurotrophins, supporting synaptic plasticity, learning, and memory. It influences dopaminergic and serotonergic neurotransmission, contributing to mood stabilization and anxiolytic effects. Additionally, Semax exhibits antioxidant and anti‑hypoxic properties, protecting neurons from oxidative stress and ischemic damage. Its activity on the central nervous system enhances resilience to stress and promotes recovery following neurological insults.

Research & Clinical Data

Preclinical and clinical studies in Russia suggest Semax’s efficacy in improving cognitive function, reducing anxiety, and supporting recovery after ischemic stroke. It has been used in therapeutic contexts for attention deficit, memory impairment, and neurovascular disorders. Comparative analyses highlight its favorable safety profile, with minimal side effects and no evidence of dependence. Regulatory approval outside Russia has not been established, and Semax remains investigational in most countries.

Purity & Quality

Reference‑grade peptide material. Certificate of Analysis available per batch. Regulatory status: approved in Russia for neurological indications; investigational elsewhere.

Classification & Handling Class: Synthetic heptapeptide | Source: ACTH fragment analog | Administration: Intranasal (common) or parenteral | Storage: 2–8°C refrigerated, protect from light | Regulatory: Approved in Russia, investigational elsewhere