I have recently been prescribed Bupropion 300mg XR 2x/day. Right now I am taking 300 in the am and 150 in the afternoon. Next week I go to 300mg in the afternoon to make the total 600mg per day. I have researched and found this to be very rare. Any feedback?? I also take Effexor 75 mg and Xanax .5 as needed, 2x+ per day.