Metronidazole is an antibiotic and antiprotozoal medication used to treat a wide variety of infections caused by anaerobic bacteria and certain parasites. It is commonly sold under the brand name Flagyl.
It is available in several forms, including oral tablets, oral capsules, topical cream, topical gel, lotion, and intravenous injection. The choice of formulation depends on the type and location of the infection being treated. Metronidazole works by interfering with the DNA of susceptible organisms, ultimately leading to their death.
Metronidazole is a prescription medication, meaning it must be prescribed and monitored by a licensed healthcare professional. It is important to complete the full course of treatment, even if symptoms improve, to ensure the infection is fully eradicated and to prevent the development of antibiotic resistance. (MedlinePlus, DrugBank)
Deep dive
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Known interactions
Category rule: supplement × medication
Note
Some supplements change how the body processes medications (absorption, liver enzymes, or additive effects).
Specific pairs are checked against a licensed drug database and shown with their own severity. Always confirm with your provider or pharmacist.
Category rule: vitamin × medication
Note
Certain vitamins interact with specific medications (e.g., vitamin K with blood thinners).
Specific pairs are checked against a licensed source; confirm with your provider.
Frequently asked
Sources referenced
["MedlinePlus", "DrugBank", "PubChem", "Mayo Clinic", "FDA label (latest version for Metronidazole oral tablets)", "EMA SmPC (Summary of Product Characteristics for Metronidazole)", "Cochrane Library (specific reviews on C. difficile and bacterial vaginosis)"]
Stackwise compiles summaries from publicly available scientific and regulatory references. Always verify important decisions with a licensed clinician.
Related compounds
Others in the medication category or studied for the same goals.
