The last time I refilled my prescription they gave me the generic and I thought it was a mistake. The pills are like 4 times the size, a different shape and different color. It didn't even say Bupropion, it says Budeprion (not sure if I spelled that right). After confirming that it was the new generic for Wellbutrin XL, I started looking around online. I found quite a few message boards with people saying that they were having problems with their symptoms coming back and having new side effects when they were switched to this generic. So, you are not alone in your experience.