Dosing Guide — 2026-11-10
Semax is a nootropic peptide studied for cognition, focus, and neuroprotection. It can be dosed by subcutaneous injection or — more commonly for cognitive research — as a nasal spray. This guide covers both routes, morning timing, and the common 5-on-2-off cycling pattern. The numbers match our Semax 10mg and Semax spray protocol pages.
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Standard reconstitution: add exactly 2 mL bacteriostatic water.
| Metric | Value |
| Peptide | 10 mg |
| Bac water | 2 mL |
| Concentration | 5 mg/mL |
| Per 10 units | 500 mcg |
Dose: 500 mcg daily (10 units), in the morning.
The spray is pre-mixed — each spray delivers ~50 mcg.
| Level | Dose | Sprays |
| Conservative | 100 mcg | 1 spray per nostril, once daily AM |
| Best results | 200 mcg | 2 sprays per nostril AM (and again in the afternoon if desired) |
Prime the pump before first use, then refrigerate.
| Parameter | Value |
| Cycle length | 1–2 months common |
| Time off | 2–4 weeks |
| 5-on / 2-off | Very common — reduces overstimulation and diminishing effects over time |
Semax is often discussed alongside Selank (the calmer, anxiolytic counterpart). See the Semax research overview, Selank research, and can peptides help with brain fog. Refrigerate the reconstituted vial and use within 4 weeks; keep the spray refrigerated and use within the timeframe on the bottle.
Disclaimer: All information presented in this article is for educational and informational purposes only. Platinum Biolabs does not promote or endorse the use of peptides for human consumption. All products sold by Platinum Biolabs are intended strictly for laboratory and research use only. Consult a qualified healthcare professional before making any health-related decisions.