Prescription requiredAntibiotic/Antiprotozoal (Anti-infective)

Zanocin Oz IV — Side Effects & Warnings

Known side effects of Zanocin Oz IV include Nausea, vomiting, abdominal pain, diarrhoea, headache, dizziness, metallic taste, injection site pain/phlebitis, rash. Not everyone experiences these side effects.

Medically reviewed by Dr. Balaji Krishnan, MBBS · Updated June 2026

Common Side Effects

Nausea
vomiting
abdominal pain
diarrhoea
headache
dizziness
metallic taste
injection site pain/phlebitis
rash

This is not an exhaustive list. Consult your doctor if you notice any unusual symptoms.

Important Warnings

Prescription-only; use only under medical supervision. Fluoroquinolones may cause tendonitis/tendon rupture, peripheral neuropathy, CNS effects (seizures, confusion), QT prolongation and worsening of myasthenia gravis—stop and seek care if tendon pain, numbness/tingling or severe dizziness occurs. Risk of C. difficile–associated diarrhoea; avoid unnecessary use. Use with caution in elderly, renal impairment (dose adjustment may be needed), history of seizures, heart rhythm disorders, and liver disease. Avoid excessive sunlight/UV (photosensitivity).

Drug Interactions

Zanocin Oz IV may interact with the following:

Warfarin/anticoagulants (↑bleeding risk)
antiarrhythmics/QT-prolonging drugs (e.g.
amiodarone
sotalol
macrolides) (↑QT risk)
corticosteroids (↑tendon rupture risk)
antidiabetic drugs/insulin (hypo/hyperglycaemia)
theophylline/NSAIDs (↑seizure/CNS stimulation risk)
lithium (↑levels)
cyclosporine (↑toxicity); alcohol with ornidazole may cause disulfiram-like reaction

Always tell your doctor about all medicines you are taking, including over-the-counter drugs and supplements.

Pregnancy Safety

Use with caution / Consult doctor (generally avoid unless benefits outweigh risks)

Alcohol Interaction

Avoid (may cause flushing, nausea, vomiting with ornidazole)

Habit Forming

Storage

Store below 25°C, protect from light. Do not freeze. Keep in original container; use immediately after opening as per hospital protocol.

Zanocin Oz IV — Safety Summary

Composition: Ofloxacin 200 mg + Ornidazole 500 mg (in 100 mL IV infusion)
Prescription: Required (Rx)
Pregnancy: Use with caution / Consult doctor (generally avoid unless benefits outweigh risks)
Alcohol: Avoid (may cause flushing, nausea, vomiting with ornidazole)
Habit forming: No

Zanocin Oz IV — Safety FAQs

What should I do if I experience side effects?

Mild side effects often resolve on their own. If side effects are severe or persistent, stop the medicine and consult your doctor immediately.

Are all listed side effects common?

No. Some side effects are common while others are rare. Not everyone experiences side effects. Consult your doctor if you are concerned.

Can I take this medicine with other drugs?

Some medicines interact with each other. Always inform your doctor about all medicines you are currently taking.

When should I seek emergency help?

Seek immediate medical attention if you experience severe allergic reactions (difficulty breathing, swelling of face/throat), chest pain, or any life-threatening symptoms.

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Safety disclaimer

This information is for educational purposes only and is not a substitute for professional medical advice. If you experience severe side effects, seek medical attention immediately.