I have been on Wellbutrin so brand a few years and it worked very well and kept me stable and functioning. Recently, my insurance said it was too expensive and switched me to a generic, saying they are identical. However, I have had lots of trouble, headaches, hard breathing, bad headaches, thinking it will subside. Today, quite depressed and could not function. My body feels theses meds are not the same....not sure what to do as insurance may refuse to switch me back....