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Medication guide

Ketoconazole (Shampoo)

Treats dandruff and seborrhoeic dermatitis. Oral ketoconazole instructions do not apply.

Check the name, strength and form on your own prescription or package.

Brand
Nizoral
Form
2% ketoconazole shampoo
Guidance checked
2026-09-08

About this medication

Treats dandruff and seborrhoeic dermatitis. Oral ketoconazole instructions do not apply.

How to use it

For adults and children over 12, the reference uses twice weekly treatment for two to four weeks, leaving lather for three to five minutes before rinsing.

Pregnancy and breastfeeding

Use in pregnancy or breastfeeding only with physician advice under this label.

Before you use it

Avoid ingredient allergy and eye contact; younger children need medical advice.

Possible side effects

Scalp irritation or changes in hair texture.

When to get help

Stop for marked irritation, hives or swelling.

Other medicines and products

A clinician should guide changes after prolonged topical-steroid treatment.

Missed doses, storage and accidental exposure

Follow your own product’s missed-dose instructions. If you are unsure, ask the Care365 clinical team before taking an extra dose. Contraceptives, injections and modified-release medicines may need a specific plan.

Keep the original packaging and follow its storage, expiry and disposal instructions. Keep medicines away from children and pets. Ask about refrigeration, after-opening limits and safe sharps disposal when relevant.

For suspected overdose or accidental swallowing, contact poison control or urgent medical care promptly. Call emergency services for breathing difficulty, collapse or a seizure.

References and product information

Sources checked .

Sources checked 2026-09-08. Safety sections are highlights; consult the full product information for complete warnings and instructions.

Check the Canadian Drug Product Database by product name or DIN for current product information.

The Pharmasist page for Ketoconazole gives more background about this medicine. Its linked monograph may describe a different brand, strength or formulation from the one discussed here, so use the exact product and DIN on your package when checking doses and warnings.

A formulation is the form of a medicine, such as a tablet, cream or spray. Products with the same ingredient can have different directions.

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