"i have been on lexapro for a week and it&#039;s been a ride. i have had horrible side effects from the start. really bad headaches, night sweats, frequent suicidal thoughts. it has had an opposite effect on me. my depression/anxiety are worse. i sleep way too much. i also have experienced loss of appetite while a lot of people gain weight. i&#039;ve lost 9 pounds in a week, which is really weird because my weight has been the same for years. i never really gain or lose so i know it&#039;s the medicines. i&#039;m hoping that all the bad side effects will pass. i don&#039;t want to give up on the drug yet. i&#039;m going to at least try and stick it out for a month."