Itraconazole: uses, side effects & brands

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

Itraconazole is an oral antifungal for stubborn skin, nail and internal fungal infections. It belongs to the Antifungal group. Antifungals treat fungal infections of the skin, nails, mouth or internal organs.

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Drug type — dosing is set by your doctor

Measure	Range
Drug class	Antifungal
Type	Prescription
Dose	Individual — ask your doctor or pharmacist

What it is used for

Stubborn or widespread ringworm (tinea) infections
Nail fungal infections
Oral and vaginal thrush
Some deep fungal infections (e.g. aspergillosis, histoplasmosis)

Common brand names

India: Itaspor, Canditral, Sporanox
Worldwide: Sporanox

Common side effects

Nausea, tummy pain or diarrhoea
Headache
Rash
Swelling of ankles

Before taking it — precautions

Not suitable with heart failure — tell your doctor about any heart problems
Many serious drug interactions (some statins, heart and sleeping medicines) — list all your medicines
Capsules are best taken right after a full meal; avoid in pregnancy

When to see a doctor urgently

Breathlessness, swollen ankles or rapid weight gain (heart failure) (urgent)
Yellow eyes/skin, dark urine, loss of appetite (liver problem)
Severe allergy or blistering rash (urgent)

Not a prescription — no dose shown. The right dose of itraconazole 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

Why must I take it with food?

Itraconazole capsules are absorbed much better after a full meal; on an empty stomach they may not work well.

Why is ringworm coming back?

Ringworm can recur if the course is stopped early or if clothes and towels carry the fungus. Complete the course and keep skin dry.

Do I need blood tests?

For longer courses, doctors may check liver tests.

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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.