Source comparison
Semax Nasal Spray Administration Dosing Guide: Comparison of Delivery Methods
| Delivery Method | Bioavailability | Time to CNS | Preparation Required | Typical Research Dose | Administration Frequency | Bottom Line ||—|—|—|—|—|—|| Intranasal spray (standard protocol) | 10–20% CNS penetration | 15–30 minutes | Reconstitution + spray dev
This comparison does not assign a generated winner or score.
- | Delivery Method | Bioavailability | Time to CNS | Preparation Required | Typical Research Dose | Administration Frequency | Bottom Line ||—|—|—|—|—|—|| Intranasal spray (standard protocol) | 10–20% CNS penetration | 15–30 minutes | Reconstitution + spray device | 200–300 mcg per nostril | Twice daily (8-hour intervals) | Optimal balance of CNS delivery and convenience. Requires precise technique || Intranasal drops (pipette) | 8–15% CNS penetration | 20–40 minutes | Reconstitution only | 300–400 mcg per nostril | Twice daily | Lower bioavailability due to inconsistent mucosal coverage and faster drainage || Subcutaneous injection | 2–5% CNS penetration | 45–90 minutes | Reconstitution + injection supplies | 500–1000 mcg total | Once daily | Higher systemic exposure but poor BBB penetration. Not recommended for CNS effects || Oral (tablet) | <1% CNS penetration | Not clinically significant | None | 3000–6000 mcg | Three times daily | Approved in Russia but poor CNS bioavailability lim