Sertraline
"Took one 50mg tablet as directed and I have never felt so iIl. Had to get down on the floor, could not lift my head off the floor, felt like I was going to pass out and felt nauseous.  Had diarrhoea; pins and needles in hands; hot flushes - the most unpleasant side effects. Could only lay in bed and even then the room was spinning. Took 24 hours to feel normal again."