Treatment should be initiated with a dose of 0.25 to 0.5 mg three times daily. Depending on the response, dose may be increased at intervals of 3 to 4 days in increments of no more than 1 mg/day. The maximum dose should not exceed 4 mg/day. Occasional patients with panic disorder may need as much as 10 mg a day to achieve a successful response and in these cases periodic reassessment and consideration of dosage adjustment is required.