I was first put on Lexapro for anxiety/panic attacks and that was way to strong for me-I felt very tired and had bad abdomen pains. So my doc switched me to Zoloft. Bad idea. On Zoloft, at first i felt very bad brain fog and had a panic attack every day for at least the first two weeks of being on it and after that went away, i got a pins and needles feeling in my lips and face and hands sometimes too. I panicked about nothing and it gave me really bad moodswings. I would be slap-happy one minute and in tears the next. Or I was just a real B*tch sometimes too. I was very moody. All that went away about a month later and then I got HORRIBLE headaches, so she switched me from 25mg to 50mg. SO MUCH WORSE FOR ME! I had horrible horrible migraines every day i even had to call off work twice it was so bad. She switched me back to 25mg and the headaches still continued. I was on it for a month and a half or 2 months and i gained 10 lbs. at least. I went back to her and she finally took me off the medicine. I have been off it now for almost a week and feel terrible. I have brain fog very bad, feel dizzy and loopy when walking around, sever stomach pains, still eating more and gaining weight, i just feel REALLY out of it! I can not concentrate at my job! BUT MY HEADACHES HAVE VANISHED AND THE DREAMS/NIGHTMARES AT NIGHT ARE GETTING LESS SCARY AND LESS OFTEN!! I hope to lose all side effects within 2 weeks!!!!