I have only been on Lexapro for about three weeks. I feel unmotivated to exercise so I suppose weight gain might be a threat.
I was on Paxil a few years ago and was going to switch to Wellbutrin because it would have fewer side effects and maybe allow me to lose some weight, the doctor said. But it turned out I was allergic to the Wellbutrin. So I went med-free for a few years.
Recent events have made me very upset so my new doctor put me on Lexapro which so far seems to have very few side effects. So far I do not notice any, in fact. It's hard to tell if I sometimes feel lethargic and spacey because of the drug or because of my emotional/mental state.