I take 180 mg(3 of 60mg tabs) every 3 hours for the 3 morning doses and 120 mg(2 of 60 mg tabs) every 3 hours for the 3 afternoon/early evening doses and 1 timespan to get through night. I do not ever change the dosing schedule without doctor approval and it has been this dose for about 2 years now. The timing is very rigid and I never deviate more than 15 minutes on a dose.