My hands shake,my heart races and my vision feels funny. Does this happen to anyone else? And does it go away after my body adjusts to it? I guess I should mention I'm 5 feet tall and 115 lbs. Trying to get down to 105 for a Vegas trip. I don't want to stop taking it bc it does curb my appetite. Lately I've been taking it with a xanax and that seems to help a little.