Semax

Overview

Synthetic peptide developed in Russia for cognitive enhancement and neuroprotection. Derived from ACTH.

Reported benefits

Enhanced focus and memory, neuroprotection, improved learning, mood enhancement, stress resilience

Protocols & dosing

Typical dosage: 300-600 mcg (daily).

Detailed dosing protocols have not yet been catalogued.

FDA & legal status

Semax is not currently FDA-approved for any indication. Effective April 22, 2026, the FDA removed Semax from Category 2 of its Section 503A bulk drug substances list after the original nominators withdrew their nominations. This removal lifts the prior “significant safety risk” designation but does not place Semax on the 503A Bulks List. Compounding pharmacies may prepare it with a valid physician prescription and pharmaceutical-grade API from an FDA-registered manufacturer. The FDA’s Pharmacy Compounding Advisory Committee (PCAC) is scheduled to review this substance at its July 23–24, 2026 public meeting. Removed from FDA Category 2 effective April 22, 2026. Selected for PCAC review Day 2 — July 24, 2026. PCAC agenda: DSIP (Emideltide), Semax, Epitalon. NOT currently on 503A Bulks List — requires physician Rx. Source: FDA Advisory Committee Calendar / Lengea Law, May 2026.

Vendor information

PeptideSciences101 does not endorse vendors. For transparency metrics and third-party testing notes, see the vendor directory.

Side effects & safety

Reported side effects: Generally safe. Possible: overstimulation, sleep disturbances if taken late

References

No external sources have been catalogued for this article yet.