Methronidazole Other names: Metronidazole

Chemical formula: C₆H₉N₃O₃  Molecular mass: 171.154 g/mol  PubChem compound: 4173

Active ingredient description

Metronidazole is an anti-infectious drug belonging to the pharmacotherapeutic group of nitroimidazole derivatives, which have effect mainly on strict anaerobes. This effect is probably caused by interaction with DNS and different metabolites.

Medicine classification

This medicinal substance has been classified in the anatomical therapeutic chemical (ATC) classification according to its main therapeutic use as follows:

ATC code Group title Classification
A01AB17 Metronidazole A Alimentary tract and metabolism → A01 Stomatological preparations → A01A Stomatological preparations → A01AB Antiinfectives and antiseptics for local oral treatment
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D06BX01 Metronidazole D Dermatologicals → D06 Antibiotics and chemotherapeutics for dermatological use → D06B Chemotherapeutics for topical use → D06BX Other chemotherapeutics
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G01AF01 Metronidazole G Genito urinary system and sex hormones → G01 Gynecological antiinfectives and antiseptics → G01A ANTIINFECTIVES AND ANTISEPTICS, EXCL. COMBINATIONS WITH CORTICOSTEROIDS → G01AF Imidazole derivatives
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J01XD01 Metronidazole J Antiinfectives for systemic use → J01 Antibacterials for systemic use → J01X Other antibacterials → J01XD Imidazole derivatives
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P01AB01 Metronidazole P Antiparasitic products, insecticides and repellents → P01 Antiprotozoals → P01A Agents against amoebiasis and other protozoal diseases → P01AB Nitroimidazole derivatives
Discover more medicines within P01AB01

Product monographs

Competent medicine agencies globally have authorized commercialization of this active ingredient according to these medication package inserts (MPIs):

Title Information Source Document Type  
METRONIDAZOLE Film-coated tablet Medicines & Healthcare Products Regulatory Agency (GB) MPI, EU: SmPC
METRONIDAZOLE Solution for infusion Medicines & Healthcare Products Regulatory Agency (GB) MPI, EU: SmPC
ROSICED Cream Medicines & Healthcare Products Regulatory Agency (GB) MPI, EU: SmPC
NORITATE Cream FDA, National Drug Code (US) MPI, US: SPL/Old
METROGEL Gel FDA, National Drug Code (US) MPI, US: SPL/PLR

Structural formula

Graphic representation of the active ingredient's molecular structure

External identifiers

CAS Substance: 13182-89-3
CAS Substance: 443-48-1
DrugBank Drug: DB00916
KEGG Drug: D00409
PubChem Compound: 4173
RxNorm Ingredient: 6922
SNOMED-CT Concept: 372602008
Metronidazole (substance)
UNII Identifier: 140QMO216E


Methronidazole is an active ingredient of these brands:

Australia (AU)

Austria (AT)

Brazil (BR)

Canada (CA)

Ecuador (EC)

Estonia (EE)

Finland (FI)

France (FR)

Germany (DE)

Ireland (IE)

Israel (IL)

Italy (IT)

Japan (JP)

Lithuania (LT)

Malta (MT)

Mexico (MX)

Netherlands (NL)

Poland (PL)

Romania (RO)

Singapore (SG)

Spain (ES)

Tunisia (TN)

Turkey (TR)

Note the following: The list of brand names is continuously updated, and thus does not include the total of products circulating worldwide.

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