I switched from wellbutrin to lexapro. I've been taking lexapro for 3 weeks now and don't feel nearly as anxious as I did but feel flat as a pancake emotionally. I feel sleepy much of the time too. My doc wants me to stick it out but is considering putting me on seroquel if the lexapro doesn't work out. I've got an increased appetite which I think I can directly relate to the lexapro as well. Good to not feel depressed but not good to be getting heavier, being tired, and feeling deprived of my personality. Sorry I don't have happier news for you!