Methylthioninium chloride
Also known as: Methylthioninium chloride Proveblue · Lumeblue (previously Methylthioninium chloride Cosmo)
General information only. Anpheros does not diagnose and does not recommend treatment. Talk to a doctor or pharmacist about your situation. In an emergency, call 112 (or your local emergency number).
In short
In the European Union, methylthioninium chloride is indicated as a diagnostic agent to enhance the visualisation of colorectal lesions in adult patients undergoing screening or surveillance colonoscopy. It is also indicated in the European Union for the acute symptomatic treatment of medicinal and chemical products-induced methaemoglobinaemia in adults, children, and adolescents aged 0 to 17 years old.
Source: European Medicines Agency (EMA), Lumeblue (previously Methylthioninium chloride Cosmo) — EPAR, 17/06/2025. © European Medicines Agency. · Source: European Medicines Agency (EMA), Methylthioninium chloride Proveblue — EPAR, 19/12/2025. © European Medicines Agency.
AI-generated summary of the sources cited on this page, checked automatically against them. Not reviewed by a clinician; not medical advice.
Codes
- RxNorm
- 6878 methylene blue
- EMA
- EMEA/H/C/002108, EMEA/H/C/002776
Official indications
Quoted unchanged from official product information, in English. Listed alphabetically by product, not ranked.
EMA (EU) Lumeblue (previously Methylthioninium chloride Cosmo)
Lumeblue is indicated as a diagnostic agent enhancing visualisation of colorectal lesions in adult patients undergoing screening or surveillance colonoscopy.
Source: European Medicines Agency (EMA), Lumeblue (previously Methylthioninium chloride Cosmo) — EPAR, 17/06/2025. © European Medicines Agency.
Document date: 17/06/2025 · Official document →
EMA (EU) Methylthioninium chloride Proveblue
Acute symptomatic treatment of medicinal and chemical products- induced methaemoglobinaemia. Methylthioninium chloride Proveblue is indicated in adults, children and adolescents (aged 0 to 17 years old).
Source: European Medicines Agency (EMA), Methylthioninium chloride Proveblue — EPAR, 19/12/2025. © European Medicines Agency.
Document date: 19/12/2025 · Official document →
Other treatments A–Z
What people report
Not enough data yet. Anonymous counts appear here only for groups of at least 20 people who agreed to share them.
External resources
Questions
What is Methylthioninium chloride approved for in the European Union?
Lumeblue is indicated as a diagnostic agent enhancing visualisation of colorectal lesions in adult patients undergoing screening or surveillance colonoscopy. (Source: European Medicines Agency (EMA), Lumeblue (previously Methylthioninium chloride Cosmo) — EPAR, 17/06/2025. © European Medicines Agency.)
Sources and attribution
- Source: European Medicines Agency (EMA) — EPAR. © European Medicines Agency.
- Names other than the official source titles: Anpheros translations and plain-language names, made with AI assistance and checked automatically; the source names are in English.
- This product uses publicly available data from the U.S. National Library of Medicine (NLM), National Institutes of Health, Department of Health and Human Services; NLM is not responsible for the product and does not endorse or recommend this or any other product.
- Source: European Medicines Agency (EMA), Lumeblue (previously Methylthioninium chloride Cosmo) — EPAR, 17/06/2025. © European Medicines Agency.
- Source: European Medicines Agency (EMA), Methylthioninium chloride Proveblue — EPAR, 19/12/2025. © European Medicines Agency.
Anpheros Search catalog 2026.10.5, published 17 October 2026. About the data →
About this page. This page brings together public information from official sources, each cited where it is used. It is not medical advice, it is not a diagnosis, and it does not tell you which treatment to take.
Treatments. Indications are quoted unchanged from official product information (European Medicines Agency, U.S. Food and Drug Administration). They describe what a medicine is approved for, not whether it is right for you. Approved uses can differ between countries. Always read the package leaflet and follow your doctor's or pharmacist's advice.
What people report. Figures marked "reported by Anpheros users" are anonymous counts from at least 20 people who agreed to share them. They show what people report, not what works, and they are not clinical evidence.
Links between terms. "May be associated with" means the link appears in a cited source. It does not mean you have that condition.
In an emergency, call 112 (or your local emergency number). Do not delay seeking medical help because of something you read here.