I am also switching from celexa to budeprion sr. My doctor told me that they work in completely different parts of the brain, and she told me to take both my regular dose of celexa and the new dose of the budeprion together. I would definitely talk to your doctor, and maybe even get a second opinion.
hey...
i did the same thing, except my doctor had me come off the celexa (60mg i think) slowly, over about 2-3 weeks. i'm not a doctor or anything but...if you're feeling yucky, maybe call the doc...or find another doc and fill them in on what's going on!