Peptide Trainings

Semax

A nootropic peptide that enhances focus, memory, and neuroprotection

Semax is a synthetic heptapeptide derived from the adrenocorticotropic hormone (ACTH). Developed in Russia, it is one of the most well-studied nootropic peptides and is actually approved as a pharmaceutical drug in Russia for stroke treatment, cognitive enhancement, and neuroprotection. It is widely used in the biohacking community for focus and mental performance.

Mechanism of action

Semax increases BDNF and NGF (Nerve Growth Factor) expression in the brain, promoting neuronal survival and plasticity. It modulates dopaminergic and serotonergic systems, enhances cerebral blood flow, and has anti-inflammatory effects in the CNS. Its ACTH-derived sequence gives it neuroprotective properties without the hormonal effects of full ACTH.

Benefits discussed in research

  • Significantly enhances focus, concentration, and mental clarity
  • Improves memory formation and recall
  • Neuroprotective — reduces damage from stroke and brain injury
  • Increases BDNF (Brain-Derived Neurotrophic Factor)
  • Reduces anxiety and depression symptoms
  • Approved pharmaceutical drug in Russia

Research status

Phase III

Dosing information

For educational and research purposes only. Not medical advice.

typical
200–600 mcg per dose
range
100–1200 mcg per day
frequency
1–2 times daily
route
Intranasal (most common) or subcutaneous injection
cycleLength
2–4 weeks on, 2 weeks off
notes
Intranasal delivery provides rapid onset (within 15–30 minutes). The N-acetyl version (N-Acetyl Semax Amidate) is considered more potent and longer-lasting. Effects include increased mental energy, focus, and verbal fluency.

Side effects and safety

  • Mild stimulation or restlessness at high doses
  • Nasal irritation with intranasal use
  • Headache (rare)
  • Sleep disruption if taken too late in the day

Frequently asked questions

Is Semax a stimulant?

Not in the way caffeine or Adderall are. Those work by forcing your brain to release more dopamine or blocking its reuptake, which is why they cause crashes and dependency. Semax works by helping your brain produce more BDNF — a protein that makes neurons healthier and better connected. The result feels like clarity and focus, not the jittery, wired feeling of a stimulant.

What is the difference between Semax and N-Acetyl Semax Amidate?

N-Acetyl Semax Amidate (often called NASSA) is a chemically modified version of Semax. The modifications make it more resistant to breakdown in the body, so it stays active longer and you need a smaller dose to get the same effect. Most experienced users consider it the upgraded version — more potent, longer-lasting, and better value per dose.

Research references

Read the Semax profile

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