I recently started taking Wellbutrin XR (slowly increased to 300mg) - while also weening off of Effexor. I guess I have had a hard time distinguishing between the side effects from both? Anyone who has come off Effexor knows that it is EVIL. I was feeling great from the Wellbutrin (energetic, positive thoughts, increased sex drive, etc. but also feeling the dizziness, fogginess, and nausea from coming off Effexor. Now that I have stopped Effexor for 2 weeks now, I feel like my depression is coming back. I absolutely do not want to go back on Effexor, but I feel like the positiveness was only there when I had both in my system? Any thoughts?