... into the Dr. I had told him I wanted to take something to quit smoking I was prescribed Budeprion XL 150mg stayed on this for 4 weeks got nothing but irritable and insomia.I continued to take this and my Zoloft was cut down to 50 mg. The Dr says there is nothing else I can use, zyban is just another name for Welbutrin. I took Welbutrin in its regular form years ago and stopped smoking in a week, but was left to jittery to continue on the pill. Does anyone have any suggestions. I keep hearing these different named drugs although the same can work differently in different bodies. I had also tried Chantex that did nothing might as well not have us did not even get side effects. Please help, I really want to stop