Dizzy and poor peripheral vision for about one week, then gained 14 pounds over the 2 months I took it. Immediately stopped it with doctor's approval because I could not stand the extra weight on arthritic knees. I went from 200 to 214 lbs. I am now beginning on a low regimin of exercise hoping the weight will come off again. I was 170 this time last year but started packing on pounds because of lack of exercise, motivation, and depression. Diagnosed with FMS in 2006, but I'm sure I've had it many years before that