Metronidazole
Metronidazole treats amoebic dysentery, giardia, some vaginal infections and anaerobic bacterial infections.
Common brands
- Flagyl
- Metrogyl
Dosage forms
- Tablet
- Suspension
- Gel
- Infusion
Uses
- Amoebic dysentery
- Giardiasis
- Bacterial vaginosis
- Dental infections
How it works
Damages DNA of anaerobic bacteria and parasites.
How to take
Take after food; complete the course.
Common side effects
- Metallic taste
- Nausea
- Dark urine
Serious side effects — get medical help
- Nerve damage with long use
- Seizures (rare)
Who should not take it
- First trimester of pregnancy (unless advised)
- Alcohol use during and 48 hours after
Interactions
- Alcohol (severe reaction)
- Warfarin
- Lithium
Pregnancy & breastfeeding
Avoid in early pregnancy unless prescribed.
Alcohol & driving
Do not drink alcohol during and for 2 days after the course.
Storage
Store below 30°C.
Used for these conditions
Prescribed by
Brands available in India
Frequently asked questions
What is Metronidazole used for?
Amoebic dysentery, Giardiasis, Bacterial vaginosis, Dental infections
What are the side effects of Metronidazole?
Metallic taste, Nausea, Dark urine
How should I take Metronidazole?
Take after food; complete the course.
Who should not take Metronidazole?
First trimester of pregnancy (unless advised), Alcohol use during and 48 hours after
Medically reviewed by
Medical review pending
Last updated
9 October 2026
Sources
- National List of Essential Medicines (NLEM) 2022, MoHFW
- National Formulary of India, Indian Pharmacopoeia Commission
- CDSCO approved drug information
This information is for general awareness and does not replace advice from a qualified doctor. Do not start, stop or change any medicine without medical advice.