Ornidazole
Ornidazole is an antimicrobial medication belonging to the nitroimidazole class, used primarily to treat infections caused by protozoa and anaerobic bacteria. It is commonly prescribed for conditions such as trichomoniasis, giardiasis, amebiasis, and bacterial vaginosis, as well as certain anaerobic infections.
Ornidazole is an antimicrobial medication used to treat protozoal infections and anaerobic bacterial infections.
Key facts at a glance
- ATC
- G01AF06
- RxNorm
- 7701
- Generic
- Ornidazole
- Class
- atc-g01
- Brands
- —
- Availability
- rx
- Lactation
- unknown
- Routes
- oral
- Forms
- tablet
- Regions
- US, EU, CN, JP
- Monitoring
- —
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
Treatment of trichomoniasis, giardiasis, amebiasis, bacterial vaginosis, and anaerobic bacterial infections. Also used for gynecological infections and surgical prophylaxis involving susceptible organisms.
As a nitroimidazole derivative, ornidazole works by entering microbial cells where it is reduced by ferredoxin or flavodoxin, producing cytotoxic metabolites that cause DNA strand breakage and inhibit nucleic acid synthesis, leading to cell death.
May cause gastrointestinal disturbances, headache, or dizziness. Should be avoided in patients with known hypersensitivity to nitroimidazoles. Use with caution during pregnancy and breastfeeding. Alcohol should be avoided during treatment due to potential disulfiram-like reactions.
Official drug label
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy