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Bioalmanac

N-Acetyl Semax Amidate

NA-Semax-Amidate · NASA · Semax amidate

Preclinical

Status reviewed 18 Aug 2026

Semax with both ends chemically capped so it lasts longer. More potent per milligram in animal work, and no human trial of the modified version exists.

Storage

Freeze-dried powder
Refrigerated at 2–8 °C, protected from light.
After mixing
Refrigerated at 2–8 °C. Nasal solutions are handled more than injectables and are correspondingly easier to contaminate.
Long-term, frozen
Unopened powder is stable at −20 °C or colder.

Reconstitution — 30 mg vial, 600 mcg dose

On a 1 mL U-100 syringe. Check every figure against your own vial before drawing.

Water addedConcentrationVolume to drawUnitsDoses per vial
1 mL30 mg/mL0.02 mL2 units50
2 mL15 mg/mL0.04 mL4 units50
3 mL10 mg/mL0.06 mL6 units50
5 mL6 mg/mL0.1 mL10 units50

Dose ranges reported in sources

Descriptions of what sources report, not recommendations.

GoalRangeFrequencySource
Commonly described community protocol300–900 mcgOnce or twice dailyCommunity practice

When to stop

  • Sleep disturbance that does not settle, or worsening anxiety or irritability.
  • Persistent headache.
  • Nasal pain, bleeding or discharge.
  • Any allergic response: rash, hives, facial swelling or difficulty breathing. Seek urgent care.

Not approved anywhere. Semax itself is registered in Russia; this modified version is not, and has never been through a human trial. Sold only as a research chemical.

Arithmetic on values you enter. Not medical advice. Not reviewed by a clinician. · bioalmanac.com/peptides/na-semax-amidate

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