how much weight are we talking about, and how long did it take to gain it? I've been on Lexapro for two months and I'm not sure if I gained any weight or not. I don't think I have (yet). My pants still fit, but I do fluctuate 5 pounds sometimes. I haven't been exercising lately at all, so I wouldn't be quick to blame it on the Lexapro in my case if I HAVE gained weight.