Terbinafine 250 mg once a day for 12 weeks (6 weeks for fingernail) or pulse therapy with 250 mg once a day for 1 week a month until the nail is clear achieves a cure rate of 75 to 80% and itraconazole 200 mg 2 times a day 1 week a month for 3 months achieves a cure rate of 40 to 50%, but the overall recurrence rate is estimated to be as high as 10 to 50%.