"i am a 18 yo girl and diagnosed for depression. my 1st week with 10 mg lexapro is beyond horrible: depression got worse, heart racing, sharpened negative thoughts, and no motivation at all when wake up in the morning. i cant concentrate and feel as if i wanna cry most of the time. it lingers till evening and tapers off toward night. at night, i feel euphoric. no problem with sleeping and weight gain. but since my depression got worse, doctor decided to double my dose to 20 mg. 2nd week was even worse: nightmare every night, fatigue, lethargic, gases in stomach. in 3rd week, it finally helps!! negative thoughts went away and i feel lightheaded. side effect: emotion numbness, sleepy, lazy. but overall this medicine is a true miracle."