I've been on and off Lexapro for the last 4.5 years (rx'd for anxiety and depression). At one point I was on it for a year and then off for a year... then on again for 1.5 years and then off for the past 8 months. I recently started back up again.
I never gained a pound on Lexapro that I could contribute to Lexapro itself. I did gain about 5 pounds overall during the 5 years period, but a lot of that was due to lack of exercise and just not being as careful about what I was eating (despite 'thinking' that I was at the time). I think when you are on any medication that may/may not affect weight gain, it's extra important to make sure that you are exercising daily AND that you are counting calories. More often than not, people tend to underestimate their calorie intake by a pretty hefty amount.
And now, a little bit of Lexapro weight loss inspiration...
My mother, also a Lexapro user and age 59, has been on the drug for about a year now. She is 5'3" tall and has always weighed somewhere between 135 (at her lowest) and 155 (at her heaviest). She has bounced between those numbers for at least 20 years now. This past May she was up around 155 pounds again and decided to join weight watchers (while still taking 10mg of Lex daily). She steadily lost nearly 2lbs a week on Weight Watchers and reached her goal weight of 140lbs a few months ago. She's maintained that weight ever since... still while taking the Lex.
Good luck to all of you! You can do it!!!