About Metronidazole
Metronidazole contains metronidazole. Its medication class is nitroimidazole antibiotic and antiprotozoal. It may be used for selected anaerobic bacterial infections and bacterial vaginosis, trichomoniasis or certain gastrointestinal infections when confirmed or suspected, depending on the exact product, diagnosis and the person’s health profile. It damages DNA in susceptible anaerobic organisms and parasites.
Whether Metronidazole is appropriate depends on the diagnosis, exact product and strength, health history, other medicines and available follow-up. A general guide cannot determine whether this treatment is right for you.
Common uses
Approved or recognized uses may vary by formulation, strength, age and clinical setting. This list is not complete.
- selected anaerobic bacterial infections
- bacterial vaginosis, trichomoniasis or certain gastrointestinal infections when confirmed or suspected
How this medication works
This summary explains the mechanism at a general level; it does not provide treatment or dosing instructions.
- It damages DNA in susceptible anaerobic organisms and parasites.
- Brand, strength and formulation can change a medication’s use and risk.
Safety
Side effects and safety considerations
Adverse effects vary between people. The label, Canadian product monograph and a pharmacist’s advice remain the product-specific references.
- Nausea, metallic taste and stomach upset can occur. Diagnosis, liver health, neurologic symptoms, anticoagulants and product-specific alcohol precautions require review.
- This page does not replace the product monograph, your pharmacist’s advice or a consultation. It provides no personalized dose and does not confirm that a product is available or appropriate.
LASO MD
What a healthcare professional may review
A request for a Metronidazole prescription or renewal begins with an assessment of the indication, expected benefit, risks and required follow-up.
- The symptoms, their duration and whether testing or an examination is needed
- Medication allergies, prior reactions and antibiotics or anti-infectives used recently
- Pregnancy, kidney or liver health and conditions that may change treatment choice
- Whether the likely cause is bacterial, fungal or viral and whether this medicine fits it
When to get help quickly
Seek prompt care for trouble breathing, facial or throat swelling, a widespread blistering rash, severe weakness, confusion, dehydration, rapidly worsening symptoms or persistent watery or bloody diarrhea.