Effective dosage:
Usual Dosage for Adults: The recommended and maximum dose is 300 mg/day, given as 150 mg twice daily. Dosing should begin at 150 mg once daily for the first 3 days, followed by a dose increase to the recommended usual dose of 300 mg/day as necessary. There should be an interval of at least 8 hours between successive doses. Doses above 300 mg/day should not be used.
