Semax
01 Summary
A synthetic peptide developed in Russia from a fragment of the stress hormone ACTH. It is used for focus, mental clarity and neuroprotection — without the jitter of a stimulant.
02 How it works
Semax is built on the ACTH(4–10) fragment, with an extra tail that makes it last longer. In animal studies it raises BDNF — a growth factor that supports brain cells — and influences dopamine and serotonin. In Russia it has been used after strokes.
03 Common uses
04 Run profile
A gentle first week, stepped up over the first month, then held. Three times a week in the morning — not late in the evening.
The profile shows the shape. Ask for the numbers for your vial, your goal and your timeline.
05 Pairs well with
06 What to watch for
Mild headache, occasionally dizziness or nausea, usually passing. Nasal irritation if used as a spray. New or worsening anxiety or sleep disruption is worth flagging. No dependence or withdrawal has been reported.
07 Evidence & status
Not FDA-approvedMostly animal research plus clinical use and studies in Russia; little Western clinical trial data.
Approved as a medicine in Russia; not FDA-approved. An FDA advisory panel recommended it for the 503A compounding list in July 2026 — non-binding.
08 FAQ
Is it a stimulant?
No. People describe clearer focus rather than a caffeine-like buzz.
Semax or Selank?
Semax leans toward focus and drive; Selank toward calm. Many use both.
Why not in the evening?
Some find it alerting enough to interfere with sleep.
Educational information only — not medical advice. The Daily Stack does not sell or supply any products. Talk to a licensed healthcare professional about your own health decisions.