Newbie here. I started taking Bupropion HCL XL 150 mg once a day. Started 1/8/13. Taken it for 3 weeks did not work. Went back to doctor 4/24/13 he increased to 2 times a day.Dry mouth I exexperience but still smoking BUT not as much SOMETIMES. One day I can smoke a pack and next day I don't desire it light up 2 puffs throw it out. I felt a decreased of appetite is this normal? When will be the effective period it should take full affect? So anxious to quit before Mother's Day 2013.