Ofloxacin: uses, side effects & brands

Written & medically reviewed by Dr. Sanjay Anbu, MBBS · Last reviewed 5 November 2026

Ofloxacin is a fluoroquinolone antibiotic for urinary, gut and other infections. It belongs to the Antibiotic (other) group. These antibiotics from various families treat specific bacterial infections; they do not work against viruses.

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Drug type — dosing is set by your doctor

Measure	Range
Drug class	Antibiotic (other)
Type	Prescription
Dose	Individual — ask your doctor or pharmacist

What it is used for

Urinary tract infections
Gut infections such as some types of infective diarrhoea and typhoid
Some chest and sexually transmitted infections
Eye and ear infections (as drops)

Common brand names

India: Oflox, Zanocin, Zenflox
Worldwide: Floxin

Common side effects

Nausea, diarrhoea or tummy upset
Headache, dizziness or trouble sleeping
Sensitivity to sunlight

Before taking it — precautions

Tell your doctor about epilepsy, heart rhythm problems, myasthenia gravis, diabetes or kidney problems
Not usually for children or in pregnancy unless your doctor decides it is needed
Keep it apart from antacids, iron, zinc, calcium or milk products, which block absorption

When to see a doctor urgently

Tendon pain or swelling, especially at the heel — stop and see a doctor
Numbness, burning or tingling in hands/feet, or confusion
Fast/irregular heartbeat, severe allergy or bloody diarrhoea (urgent)

Not a prescription — no dose shown. The right dose of ofloxacin depends on age, weight, kidney/liver function and the condition, so MedDroid does not show a dose here. Always get your dose from a doctor or pharmacist and the leaflet inside the pack. General educational information only.

Frequently asked questions

Is ofloxacin often combined with other drugs?

In India it is commonly sold combined with ornidazole for diarrhoea. Use combinations only when a doctor advises.

Why should I avoid the sun?

Fluoroquinolones like ofloxacin can make skin burn more easily. Use sun protection while taking it.

Can it affect my tendons?

Rarely, it can inflame or tear tendons, more often in older people and those on steroids. Stop and see a doctor if a tendon becomes painful.

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Sources & further reading

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.