It depends on your dosage, really, but yeah, Lexapro knocks you for an absolute loop if you just stop cold turkey. I was actually instructed by my old psychiatrist to stop cold turkey and I did, but I experienced headaches, occasional blurry vision, upset stomach, and 'brain zaps' as well as dizziness. It's not really a dangerous drug to stop cold turkey (as long as your dosage isn't too high) but you do have to pay attention to what your're thinking and feeling.