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Molecule Description

Ornidazole is used for the treatment and prevention of protozoal infections and other conditions like diarrhea, dysentery and pelvic inflammatory diseases (inflammation of the uterus, fallopian tubes, ovaries and pelvic area caused by an infection).
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Uses of Ornidazole

  • Treatment of protozoal infections such as giardiasis, trichomoniasis, etc.
  • Treatment of Crohn’s disease (when infection co-exists)
  • To treat diarrhea, dysentery (amoebiasis), pelvic inflammatory disease
  • Prevention of infections after surgery

Contraindications of Ornidazole

When should one not use Ornidazole

Allergic reaction to Ornidazole or other medicine belonging to the same family e.g. Metronidazole.

Side effects of Ornidazole

Common side effects of this drug are:

  • Headache
  • Nausea
  • Vomiting
  • Dizziness
  • Poor coordination
  • Skin reactions
  • Taste disturbances

Precautions and Warnings of Ornidazole


Can I take Ornidazole during pregnancy?
Your doctor will prescribe this medicine to you only if the benefit to you exceeds the potential risk to the fetus. Please consult your doctor.

Breast Feeding

Can I take Ornidazole while breastfeeding?
It is not known whether it passes into the mother’s milk. Hence, it is better to inform your doctor before starting this treatment if you are breastfeeding.


Can I drive if I have consumed Ornidazole?
Avoid driving when you take Ornidazole as it may cause dizziness.


Can I consume alcohol with Ornidazole?
Avoid alcohol consumption if you are taking Ornidazole. It may cause symptoms such as flushing, increased heartbeat, nausea, thirst, chest pain and low blood pressure with alcohol (Disulfiram reactions).

Mode of Action of Ornidazole

How Does It Work?

Ornidazole inhibits the growth of protozoa by interacting with the DNA of the micro-organism and inhibiting the protein synthesis, thereby leading to death of the micro-organism.

Interactions of Ornidazole

Interactions with other medicines

Blood-thinning agents like Warfarin and muscle relaxants.

Interactions with food items

No specific food interactions are observed.

Dosage of Ornidazole


Overdose of this medicine leads to confusion, dizziness, impairment of consciousness, fits/ convulsions, nausea, vomiting, diarrhea, etc. Seek immediately for medical help if you have taken more medicines.
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Missed a Dose

If you missed any dose, take it as soon as you remember. Skip the missed dose if it time for the next scheduled dose. Do not take extra medicine to compensate for the missed dose.

Content Details


Dr. Nikita Toshi

BDS (Bachelor of Dental Surgery)


Dr. Ritu Budania

MBBS, MD (Pharmacology)

Frequently Asked Questions (FAQs)


Q: What should I discuss with my healthcare expert before taking Ornidazole?

A: Give a detailed account of your medical and surgical history. The doctor should also know about other health supplements like herbal medications, nutritional supplements that you may take before starting this medication.

Q: What are the precautions that I should take while on this medication?

A: The dosage regimen of the medicine should be followed regularly. Missing doses can cause antibiotic resistance.
Last Updated on: 05 Oct 2020 | 10:47 PM (IST)

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The information provided herein is accurate, updated and complete as per the best practices of the Company. Please note that this information should not be treated as a replacement for physical medical consultation or advice. We do not guarantee the accuracy and the completeness of the information so provided. The absence of any information and/or warning to any drug shall not be considered and assumed as an implied assurance of the Company. We do not take any responsibility for the consequences arising out of the aforementioned information and strongly recommend you for a physical consultation in case of any queries or doubts. Please click here for detailed T&C.
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