Methylene Blue vs Semax
A side-by-side research comparison of Methylene Blue and Semax across mechanism, dosing, half-life, benefits, side effects and research status.
Comparison table
| Attribute | Methylene Blue | Semax |
|---|---|---|
| Full name | Methylene Blue (Methylthioninium Chloride) | Semax (ACTH 4-10 analog) |
| Category | Cognitive & Nootropic | Cognitive & Nootropic |
| Status | FDA-approved (off-label use) | Research compound |
| Mechanism | Acts as an alternative electron carrier in the mitochondrial electron transport chain, bypassing complex I-III blockades. Inhibits monoamine oxidase, tau aggregation, and provides antioxidant protection through auto-oxidation cycling. | Activates MC3/4R, increases BDNF and NGF, modulates dopamine/serotonin, enhances neuronal survival via TrkB, and promotes CREB-mediated neuroplasticity. |
| Molecular weight | 319.85 Da | 813.9 Da |
| Half-life | 5-6.5 hours | 3-5 min (systemic) / extended (intranasal) |
| Bioavailability | ~72% oral | Moderate (intranasal) |
| Typical dose | 0.5-2 mg/kg | 200-600 mcg per dose |
| Frequency | Daily or cycled | 2-3x daily |
| Route | Oral solution or sublingual | Intranasal drops/spray |
Methylene Blue reported benefits
- Mitochondrial energy boost
- Cognitive enhancement
- Neuroprotection
- Anti-aging at cellular level
- Mood improvement
- Memory support
Semax reported benefits
- Enhanced attention/focus
- Memory improvement
- Neuroprotection (stroke)
- BDNF/NGF upregulation
- Improved learning
- Optic nerve support
Related comparisons
Research and educational reference only. Not medical advice.