I was on zoloft and had the same weird feeling in my head, it was not dizzy just weird if I moved to fast and I also have a bit of vertigo, I was on it for 9 months and went cold turkey about 3 weeks ago.......my G.P doc said after a few days it's out of your system I don't think they believe that withdrawl symptoms can last it has been about 3 weeks since I stopped and still get weird head feelings but they are subsiding.