Take this medication by mouth as directed by your doctor. For the best absorption, it is best taken with or after a meal containing a moderate amount of fat. Talk to your doctor or pharmacist about specific dietary instructions, especially if you are on a low-fat diet.

The dosage is based on your medical condition and response to therapy. In children, dosage is also based on weight. The length of treatment depends on the type of infection you have. It may take several weeks to months to complete treatment for infections of the scalp, feet, and body. Nail infections may require several months to a year or longer to treat.

Antifungal medications work best when the amount of medicine in your body is kept at a constant level. Take this drug at evenly spaced intervals.

Continue to take this medication for the full time prescribed, even if symptoms disappear after a few days. Stopping the medication too early may result in a return of the infection.

Inform your doctor if your condition lasts or gets worse.