"i&#039;m a 28 year old female and i started using lexapro (10mg) after visiting my doctor and having my lab results back normal. immediately it did three things: made me extremely tired all the time, constipated and never hungry. i had to stop the medication after 8 days because the fatigue was too much to handle. they say it takes 4 to 6 weeks to feel effects but these came right away. since being off my hunger and bowel movement went back to normal but i&#039;m still so tired all of the time. i can&#039;t seem to ever have energy even after coffee. i&#039;m scared i have triggered something else by taking lexapro and wonder if i will ever feel energetic again. i&#039;ve been off it a month now, the only positive thing i experienced was losing weight."