I have been on Wellbutrin XL for quite a few year now (about 3) a...

I have been on Wellbutrin XL for quite a few year now (about 3) and really liked the benefits, and the fact that it doesn't make me sleepy like the other antidepressants do. For most of the 3 years, I have been taking the generic Budeprion without any trouble. With my first year of being on the Wellbutrin XL, the medicine was the brand name. My insurance company changed it to generic after that, and I had no problems with the generic. Then with this last refill of Budeprion, it has been terrible. I've had major panic attack symptoms. I called my doctor to see if he would write a script for the brand name and he agreed. I have had the worst time trying to get back on the name brand Wellbutrin XL. Has anyone else had this trouble?