Semax is a synthetic heptapeptide derived from the ACTH(4‑10) fragment and studied for its neuromodulatory and neuroprotective properties. Research shows Semax may influence melanocortin receptors, supporting cognitive function, attention, memory, and stress‑response pathways. It has also been investigated for its potential roles in neuroplasticity, BDNF regulation, and cerebral blood flow. Semax is provided strictly for laboratory research and is not approved for human use.