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Semax

ACTH 4-10 analog

Low Dose
300 mcg/day
Medium Dose
600 mcg/day
Route
Intranasal / SubQ
Cycle Length
4–8 weeks

Mechanism of Action

Synthetic analog of ACTH 4-10. Increases BDNF, NGF, and VEGF expression. Enhances dopaminergic and serotonergic neurotransmission. Neuroprotective and cognitive-enhancing.

Key Benefits

  • BDNF and NGF upregulation
  • Improved focus, memory, and learning
  • Neuroprotection and stroke recovery
  • Anxiety reduction and mood improvement

Dosing Protocol

Low / Starting Dose
300 mcg/day
Medium / Maintenance Dose
600 mcg/day
Administration Route
Intranasal / SubQ
Half-Life
~minutes (intranasal); hours (SubQ)
Frequency
Once or twice daily
Cycle Length
4–8 weeks
Protocol Notes

Widely used in Russia as an approved nootropic. Strong BDNF and cognitive data.

Calculate reconstitution & draw for Semax

Ideal Candidates

Cognitive enhancement, neuroprotection, stroke recovery, focus support.

Side Effects & Safety

Mild nasal irritation (intranasal), headache, fatigue at high doses.

Regulatory Status

Gray Area

Not on the 503A bulks list. Gray zone — approved as a nootropic in Russia.

Frequently asked

What is Semax?+

Semax (ACTH 4-10 analog) is a peptide studied for bdnf upregulation and focus & memory. Synthetic analog of ACTH 4-10. Increases BDNF, NGF, and VEGF expression. Enhances dopaminergic and serotonergic neurotransmission. Neuroprotective and cognitive-enhancing.

What is the dosing protocol for Semax?+

Literature commonly references 300 mcg/day (low) to 600 mcg/day (maintenance) via Intranasal / SubQ, on a 4–8 weeks cycle. Educational reference only — a licensed Stackhaus Health provider sets any personalized protocol.

What is the regulatory status of Semax?+

Not on the 503A bulks list. Gray zone — approved as a nootropic in Russia.

Where can I access Semax?+

Research-grade Semax is available through Stackhaus Research. For a personalized, provider-reviewed protocol, consult a licensed clinician through Stackhaus Health.

More in Cognitive Enhancement

Used in these stacks

Semax appears in 1 research protocol in the Stackhaus Academy library.

Written and reviewed by Stackhaus Academy Editorial Team · Last reviewed July 2026

Educational Only. This page is educational reference material, not medical advice. It does not establish a doctor-patient relationship and is not a substitute for individualized clinical guidance. Personalized protocols and clinical decisions are made through a licensed provider via Stackhaus Health.