Research summary
Methylene Blue
A phenothiazine redox dye. An FDA-approved intravenous product exists for acquired methemoglobinemia. Research-vendor capsules and droppers are not equivalent to that product.
Redox Dye and Small MoleculePhenothiazine dye / redox-active small moleculeMW319.85 g/molCAS61-73-4NCAAUnclear
Evidence at a glance
What the research says about Methylene Blue
The Methylene Blue evidence base cited here is 3 sources — 1 review.
Key findings
What the literature shows
- Methylene blue is methylthioninium chloride, a redox-active phenothiazine dye. It is not a peptide.
- An FDA-approved intravenous product is used for acquired methemoglobinemia. This limited approval does not apply to research-vendor capsules or droppers.
- Methylene blue can inhibit monoamine oxidase A. Serotonin syndrome is a serious interaction risk with serotonergic drugs.
Citations
3 peer-reviewed sources
All citations link to the original source (PubMed, journal site, or regulatory filing). Independent research database — no vendor influence on what's cited.
Review1 source
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