Methylene Blue vs NSI-189
A side-by-side research comparison of Methylene Blue and NSI-189 across mechanism, dosing, half-life, benefits, side effects and research status.
Comparison table
| Attribute | Methylene Blue | NSI-189 |
|---|---|---|
| Full name | Methylene Blue (Methylthioninium Chloride) | NSI-189 Phosphate (Neurogenic Compound) |
| Category | Cognitive & Nootropic | Cognitive & Nootropic |
| Status | FDA-approved (off-label use) | Investigational |
| 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. | Stimulates hippocampal neural stem cell proliferation and differentiation via Akt/CREB/BDNF signaling. Increases hippocampal volume visible on MRI. |
| Molecular weight | 319.85 Da | 366.4 Da |
| Half-life | 5-6.5 hours | 18-22 hours |
| Bioavailability | ~72% oral | High (oral) |
| Typical dose | 0.5-2 mg/kg | 40-80 mg |
| Frequency | Daily or cycled | Once daily |
| Route | Oral solution or sublingual | Oral |
Methylene Blue reported benefits
- Mitochondrial energy boost
- Cognitive enhancement
- Neuroprotection
- Anti-aging at cellular level
- Mood improvement
- Memory support
NSI-189 reported benefits
- Hippocampal neurogenesis
- Measurable brain volume increase
- Cognitive enhancement
- Antidepressant effects
- Long-term neural benefit
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Research and educational reference only. Not medical advice.