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Reviewed by MyPeptideMatch Editorial TeamLast reviewed February 2026Updated February 2026

Semax Dosing Protocol: 10 mg Vial — Extended Cognitive Enhancement Protocol

Semax 10 mg vial guide providing a 16-day supply at the standard 600 µg/day cognitive enhancement dose.

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Quickstart highlights

Semax's BDNF-enhancing and dopaminergic mechanisms produce cumulative cognitive improvements over 10-week cycles.

  • Concentration: 2 mg/mL (10 mg vial + 5 mL bacteriostatic water).
  • At 2 mg/mL: 600 µg = 30 units per morning injection.
  • One 10 mg vial provides ~16 days at 600 µg/day — fits within the 28-day use window.
  • Semax + Selank is a well-regarded stack: morning cognitive drive + afternoon anxiety modulation.
  • Refrigerate; use within 28 days.

Dosing table

For educational reference only. Your prescribing provider may adjust doses based on your clinical profile and response.

WeekDose (µg)UnitsFrequencyNotes
1-230015Once daily (morning)300 µg — 15 units; starting dose; 10 mg vial provides 33 doses at this level
3-1060030Once daily (morning)600 µg — 30 units; therapeutic dose; ~16 doses per vial (~16 days)

Reconstitution steps

  1. Draw 5 mL bacteriostatic water (two 2.5 mL draws); inject slowly down the vial wall.
  2. Swirl gently until dissolved; do not shake.
  3. Final concentration: 2 mg/mL. Label with date; refrigerate at 2–8 °C. Use within 28 days.

Supplies needed

10-week plan

  • 2 vials
  • 70 syringes
  • 10 mL bac water
  • 70 alcohol swabs
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Protocol overview & cycle notes

Provide an extended Semax cognitive enhancement protocol from the 10 mg vial, reducing reconstitution frequency to once every ~16 days at the 600 µg maintenance dose.

Cycle length: 10 weeks on.

Off-cycle: 4 weeks off; assess cognitive baseline before resuming.

Storage & handling

Lyophilized: store below 25 °C. Reconstituted at 2 mg/mL: refrigerate 2–8 °C; use within 28 days. At 600 µg/day, one 10 mg vial provides ~16 days — reconstitute in 2.5 mL portions for efficient use within the 28-day window.

Injection & tracking tips

  • Inject at 7–8 AM for peak morning cognitive enhancement.
  • The 10 mg vial halves reconstitution frequency versus the 5 mg vial at 600 µg/day.
  • If stacking with Selank, use separate syringes and separate injection sites; timing: Semax morning, Selank afternoon.

Tracking

Logging helps you and your provider spot patterns and adjust dose or timing.

  • Measure working memory test performance (digit span, n-back) weekly.
  • Log daily morning subjective focus and cognitive sharpness (0–10).
  • Record sleep latency and quality — adjust injection time if sleep disruption occurs.
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How this works & references

Semax's BDNF-enhancing and dopaminergic mechanisms produce cumulative cognitive improvements over 10-week cycles. The 10 mg vial provides 16 consecutive daily therapeutic doses from a single reconstitution (at 2 mg/mL, 600 µg/day). This is within the 28-day use window, making the 10 mg vial the most efficient single-reconstitution supply for extended cycles.

Sources

Frequently asked questions

How long does one 10 mg vial last at 600 µg/day?
Exactly 16.7 days (10,000 µg ÷ 600 µg/day ≈ 16.7 doses). At once-daily dosing, plan 2 vials for a 10-week (70-day) protocol, or accept ~5 days at reduced dose from the second vial.
Does Semax lose potency if stored longer than 28 days after reconstitution?
Yes — reconstituted peptides degrade progressively in aqueous solution even when refrigerated. Bacteriostatic water inhibits microbial growth but does not prevent chemical degradation. Peptide potency typically declines 5–15% per month in solution. The 28-day window represents a conservative estimate of acceptable potency retention.
Can Semax help with depression?
Semax's dopamine and serotonin turnover enhancement produces mood-lifting effects in many users. It is not a formal antidepressant but is used in Russian psychiatry for stress-induced cognitive impairment with depressive features. BDNF deficiency is also implicated in treatment-resistant depression — Semax's BDNF-raising effect has theoretical relevance.
Is there any risk of Semax causing mania or psychosis?
Dopamine enhancement carries theoretical risk of triggering manic or psychotic episodes in individuals with predisposing conditions (bipolar I disorder, schizophrenia spectrum). No documented cases exist in published Russian clinical literature at 600 µg doses. Use with caution in individuals with personal or family history of bipolar disorder or psychosis.
What cognitive functions does Semax specifically enhance?
Published Russian data and user reports consistently highlight: (1) Working memory (digit span +1–2 digits); (2) Sustained attention; (3) Processing speed; (4) Verbal fluency; (5) Motivation and mental drive. Effects are most pronounced in individuals with mild baseline cognitive impairment, stress-induced cognitive dysfunction, or ADHD-like presentations.

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This content is for informational purposes only and does not constitute medical advice. Consult a licensed healthcare provider before starting any peptide therapy. Dosing and protocols may vary by formulation and prescriber.

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