methylene blue is only useful if you have mitochondrial dysfunction. unfortunately there is no way to know if you have issues with your electron transport chain on the mitochondrial level.
Most likely, people with many types of cancer and those with advanced dementia do have problems at the mitochondrial level but it is unfortunately trial and error to see if methylene blue produces any clinical effects.
People with viral like illnesses also may have issues and experience benefits at low doses (<16mg/day).
The problem arises when people use methylene blue like a stimulant because it does produce anti-depressent like effects (as a monoamine oxidase inhibitor).
If you want an antioxidant, metheylene blue is not a good choice as it only works in one special place (complex III). You are better off drinking H2 water and getting direct reduction rather than anti-oxidation.








