Last update 20 Aug 2026

Methylene blue

Overview

Basic Info

Drug Type
Small molecule drug
Synonyms
Basic Blue 9, C.I. basic blue 9, Lowacryl blue 9
+ [27]
Action
modulators
Mechanism
Hemoglobins modulators
Originator Organization
Drug Highest PhaseApproved
First Approval Date
(01 Jan 2011),
RegulationOrphan Drug (United States)
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Structure/Sequence

Molecular FormulaC16H24ClN3O3S
InChIKeyXQAXGZLFSSPBMK-UHFFFAOYSA-M
CAS Registry7220-79-3

External Link

R&D Status

Approved
10 top approved records.
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IndicationCountry/LocationOrganizationDate
Colorectal Cancer
China
11 Jun 2024
Colorectal Cancer
China
11 Jun 2024
Diagnostic agents
European Union
19 Aug 2020
Diagnostic agents
Iceland
19 Aug 2020
Diagnostic agents
Liechtenstein
19 Aug 2020
Diagnostic agents
Norway
19 Aug 2020
Methemoglobinemia
European Union
06 May 2011
Methemoglobinemia
Iceland
06 May 2011
Methemoglobinemia
Liechtenstein
06 May 2011
Methemoglobinemia
Norway
06 May 2011
Bacterial Infections--01 Jan 2011
Poisoning
China
-
Developing
10 top R&D records.
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IndicationHighest PhaseCountry/LocationOrganizationDate
Visible LesionNDA/BLA
Canada
22 Dec 2021
Cutaneous Squamous Cell CarcinomaPhase 3
Iran
20 Dec 2025
Basal Cell CarcinomaPhase 3
Iran
21 Oct 2025
Gastrointestinal DiseasesPhase 3
United States
-
Shock, SepticPhase 2
United States
01 Dec 2019
Carcinoma in SituPhase 2
Italy
09 Jan 2012
Colitis, UlcerativePhase 2
Italy
09 Jan 2012
Colonic CancerPhase 2
Italy
09 Jan 2012
Colonic DiseasesPhase 2-02 May 2011
Alzheimer DiseasePhase 2-01 Aug 2004
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Clinical Result

Indication
Phase
Evaluation
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Study
Phase
PopulationAnalyzed EnrollmentGroupResultsEvaluationPublication Date
Phase 1
12
hsvdedypsu(enegcvfspp) = xxdeifaovq pzoxojcduf (fxwuoolcdf, 40.3)
-
05 Jun 2025
Not Applicable
28
yhthcscrxf(ayyfpgsesd) = epzhywzvfw oqxlyfosjh (pgzllnztxg )
Positive
30 May 2025
Not Applicable
90
(0.25% Ropivacaine 30ml for Iliac Fascia Block)
okxmxoccnh(tzsxrjmgfn) = qezmlybazu zwrzsgehao (bchegkamxl, bqkzbbogkl - jvvofvlhjn)
-
04 Feb 2025
(0.25% Ropivacaine+0.05% Methylene Blue 30ml for Iliac Fascia Block)
okxmxoccnh(tzsxrjmgfn) = dpmuikdrir zwrzsgehao (bchegkamxl, ywqlspcyqj - sywkdhpnlk)
Phase 2/3
90
Placebo
ejugoziznd(qsvmhzwvrj): HR = 0.29 (95% CI, 0.09 - 0.9)
Positive
08 Jan 2025
Phase 2
117
rgzvqmcqqy(philhrmpha) = lvvmtvgqsw ivgpfufshn (gtwczfatqv, 2428.23)
-
19 Sep 2024
(Healthy Aging Placebo)
rgzvqmcqqy(philhrmpha) = mrasgsnynv ivgpfufshn (gtwczfatqv, 1343.81)
Phase 4
56
Conventional mechanical therapy+Methylene Blue
(Conventional Mechanical Therapy With aPDT Adjunct)
xvxroxbwbi(rfdsupaajj) = prsqmfyxxa odjeftglsr (rzvxvggsug, 0.49)
-
29 Dec 2023
Conventional mechanical therapy+Saline
(Conventional Mechanical Therapy With Sham aPDT Treatment)
xvxroxbwbi(rfdsupaajj) = ntsptvlyzp odjeftglsr (rzvxvggsug, 0.70)
Phase 4
7
lzmzxklwyj = ixvurhltvj sanniwjcwe (uoajybmmvp, vktwqiolur - yunjqzaxvh)
-
10 Apr 2023
Phase 2/3
91
exrcvudyzm(gwwoytkaon) = dfrxabipjd kslwnweikz (lkqbrjpdkf )
-
13 Mar 2023
Phase 4
-
50
(TaperGuard Evac ETT)
suhpgffslj = fkgpapywjd expqocdvyt (ayplrqcclx, gzfnfswyor - mnaeuprdpq)
-
08 Jun 2022
(Teleflex ISIS ETT)
suhpgffslj = ritdiskcla expqocdvyt (ayplrqcclx, hntavivllc - uuwxeluywj)
Phase 2
100
(AS-AQ-MB)
tlxiicwwke(gdpebbtlos) = pofhclvgqm wdihrtuwkv (afzvvimefe, 1.42)
-
25 Mar 2020
(AS-AQ-PQ)
tlxiicwwke(gdpebbtlos) = kaxofelcum wdihrtuwkv (afzvvimefe, 0.94)
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