Semax
$Russian-developed neuropeptide; Limited Western clinical confirmation
Semax is an ACTH 4-10 analog designed to keep neuroactive properties without broad endocrine ACTH effects. It is used intranasally in Russian medical practice for neurologic and cognitive indications.
The key evidence issue is transferability. Russian clinical use and mechanistic studies are relevant, but don't assume the same regulatory, manufacturing, or trial standards as an FDA-approved neurologic drug. Distinguish Semax from Adamax and N-acetyl Semax amidate. Small modifications can change stability and potency.
Look for objective endpoints: stroke recovery scales, attention testing, retinal outcomes, and verified molecule identity on COA.
Classification details
- Semax is a synthetic heptapeptide analog of a fragment of the Adrenocorticotropic Hormone (ACTH 4-10).
- It was developed in the 1980s and 90s by the Institute of Molecular Genetics of the Russian Academy of Sciences.
- Unlike the parent hormone, Semax has no endocrine (hormonal) activity.
- It is classified as a nootropic and neuroprotective agent and has been included on the Russian List of Vital and Essential Drugs since 2001.
- Semax is an ACTH(4-10)-derived heptapeptide analog used intranasally in regional neuro contexts. It is not interchangeable with Adamax or every Semax derivative.
- Semax works through several pathways to enhance brain function and protect neural tissue: BDNF & NGF Induction: It significantly increases the expression of Brain-Derived Neurotrophic Factor (BDNF) and Nerve Growth Factor (NGF) in the hippocampus and cerebral cortex, which are critical for neuroplasticity and neuron survival.
- Melanocortin System Modulation: It acts on melanocortin receptors (specifically MC4 and MC5) in the brain, which helps regulate focus, learning, and neuroinflammation. Dopamine &
- Serotonin Stabilization: It prevents the breakdown of enkephalins and modulates the levels of dopamine and serotonin, leading to improved mood and motivation.
- Transcription Factor Activation: It influences the expression of genes involved in the vascular system and immune response in the brain, particularly during periods of hypoxia (low oxygen).
- Mechanisms include melanocortin-related signaling, BDNF/neurotrophin modulation, neuroprotection, and monoamine/cognitive effects. It is not a stimulant in the classic amphetamine sense.