Sertraline
"I took sertraline (zoloft) for 4 days before quitting it. The first day I felt very tired and slightly nauseous. After that I was having very loose stools, headaches, drowsiness, dizziness, and overall sense of just not being myself. Today I had my first full blown panic attack in almost 2 years (I've been on clonazepam since my last panic attack). I know people always say to keep pushing through the side effects but I couldn't. I had to leave work and I went home and cried for hours. I felt like a complete zombie for the last 3 days. Obviously this drug effects everyone differently but for me, it was absolute hell. :("