Hi-
I take 60 mg caps of Cymbalta for depression. the first time I took that dose was for "pain"...my heart rate increase, I felt very strange and almost went to the ER(some place I dread)....It was probably due to the increase of Norepinephrine. So when I first aw the PNP, I let her know about how tachy I got, and she started me out on 30 mg...then after a month I went up to 60 mg. The side effect I had w/ the 60 caps was headaches...but iwas so depressed, I put up w/ them.

Wellbutrin & Cymbalta are very different, maybe you need to start out on a lower dose?