Semax nasal spray is the most practical delivery format for this Russian neuropeptide — rapid onset (20–30 minutes), no injection required, and the intranasal route provides direct CNS access via the olfactory pathway, bypassing the blood-brain barrier more effectively than systemic injection.
Dosing
Standard Semax nasal spray is formulated at 0.1% concentration (1mg/mL). Each spray delivers approximately 50mcg. The standard research dose is 200–600mcg per administration (4–12 sprays). Start at the lower end (200mcg / 4 sprays) to assess individual response before escalating.
| Goal | Dose | Sprays (0.1%) | Timing |
|---|---|---|---|
| Cognitive baseline | 200mcg | 4 sprays | Morning |
| Enhanced focus | 400mcg | 8 sprays | Morning |
| Neuroprotection | 600mcg | 12 sprays | Morning + afternoon |
Cycling to Prevent Tolerance
Standard cycle: 2–4 weeks on, 2–4 weeks off. Tolerance to Semax's cognitive effects develops gradually — most researchers notice diminishing returns after 3–4 weeks of daily use. The off period allows BDNF receptor sensitivity to reset. Some researchers use a 5-days-on, 2-days-off weekly pattern to extend cycle length.
Stacking with Selank
The Semax + Selank combination is the most popular cognitive stack. Semax provides stimulating focus and BDNF upregulation; Selank provides anxiolytic calm and enkephalin protection. Administer Semax in the morning and Selank as needed for anxiety or in the evening. Both can be administered simultaneously if using separate nasal sprays.