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Ornidazole: uses, side effects & brands
Ornidazole treats amoebic and other protozoal infections, often with an antibiotic. It belongs to the Antiprotozoal & other antimicrobial group. These treat protozoal gut infections (like amoebiasis and giardia) and some other infections.
Drug type — dosing is set by your doctor
| Measure | Range |
|---|---|
| Drug class | Antiprotozoal & other antimicrobial |
| Type | Prescription |
| Dose | Individual — ask your doctor or pharmacist |
What it is used for
- Treats amoebic dysentery and amoebic liver infection
- Treats giardiasis
- Treats trichomoniasis
- Often combined with another antibiotic for mixed gut infections
Common brand names
- India: Ornof, Dazolic, Giro
- Worldwide: (ornidazole brands)
Common side effects
- Metallic taste
- Nausea or stomach upset
- Dizziness or drowsiness
- Headache
Before taking it — precautions
- Tell your doctor if you are pregnant, especially in early pregnancy, or breastfeeding
- Tell your doctor about liver disease, nerve disorders or epilepsy
- Tell your doctor if you take blood thinners
When to see a doctor urgently
- Fits, confusion or unsteadiness (urgent)
- Severe numbness or tingling
- Severe rash or allergic swelling (urgent)
Frequently asked questions
Can ornidazole make me drowsy?
It can cause dizziness or drowsiness, so be careful driving until you know how it affects you.
Why is it often in combination tablets?
It is combined with other antibiotics to cover both parasites and bacteria in some diarrhoeal infections; use these only when prescribed.
Should I avoid alcohol?
Avoiding alcohol during treatment is sensible and is commonly advised.
Explore more
Sources & further reading
- World Health Organization (WHO)
- MedlinePlus — U.S. National Library of Medicine
- Ministry of Health & Family Welfare, India
- Indian Council of Medical Research (ICMR)
Reviewed by Dr. Sanjay Anbu, MBBS. MedDroid is an AI medical assistant and can make mistakes. It provides general health information, not a diagnosis or medical advice — always consult a qualified clinician. In an emergency, contact your local emergency number immediately.