Cognitive · Tier 2
Semax
Studied for focus, memory and mental clarity.
Semax was developed in Russia in the 1980s and is used there as a prescription medicine for memory and circulation problems in the brain. It is based on a fragment of a natural hormone, modified so it no longer carries that hormone's effects on the body.
- Format
- Subcutaneous injection or nasal spray
- Cadence
- Daily, in short courses
- Typical course
- 2 to 4 weeks, then a break
- Tier
- Tier 2, $249 per vial
This peptide is not FDA-approved for the uses described. Compounded medications are not reviewed by the FDA for safety, effectiveness or quality, and availability varies by state and by pharmacy. Everything below describes what this peptide is studied for. None of it is a claim of proven benefit.
How it works
Supports brain growth factors
Research points to increased levels of a protein the brain uses for learning and memory, which is the main explanation offered for its effects.
No hormonal effects
It comes from a hormone fragment but was deliberately modified so it does not affect stress hormones. It acts on the brain, not the endocrine system.
Affects focus and motivation
It appears to influence the brain chemistry involved in attention and drive, which fits what people report.
What the evidence says
Semax is an approved medicine in Russia, but the research behind it is almost entirely published in Russian and has not been repeated by Western studies. It is not approved in the United States or Europe, and using it for focus in healthy adults is not an approved use anywhere.
What to expect
- Days 1 to 7
Effects on focus, where people notice them, tend to come fairly quickly.
- Weeks 1 to 4
A standard course. Longer continuous use has not been properly studied.
- After the course
Take a break. There is no long-term data on using it without one.
Protocol
| Nasal spray | A common route, directed by your physician |
|---|---|
| Injection | The alternative |
| Cycling | 2 to 4 weeks on, then a break |
Used in short courses rather than continuously, because nobody has studied what happens with long-term uninterrupted use.
Is it right for you?
Often a good fit
- Adults wanting short-course support for focus who accept the limits of the evidence
- People looking for an alternative to stimulants
Not a fit
- Pregnancy or breastfeeding
- Anyone with a mental health condition, without specialist input
- Anyone expecting a fully trialled Western medicine
- Athletes in tested sport, who should check current banned lists