"i have only been on lexapro 10mg for 5 days, but already my anxiety is better. i am a 16 year old, 5&#039;8 female, 280lbs. the side effects were pretty bad the first 3 days or so, nervousness, increased sweating, nausea, headaches, etc., but i&#039;m definitely starting to feel better. one positive side effect is that my appetite has decreased dramatically. sometimes i have to make myself eat, and i can&#039;t eat as much as before. of all the side effects, i hope this one stays!"