I am a little confused. I have been on Metformin now for a few months. At first it worked wonders. Eyesight improved and and I did not have any problems with urination. I was no longer going every half an hour to an hour. However over the last few weeks my eyesight has regresed and at times a little blurry. I believe that this is due to raised blood sugar levels. In the past two days I again feel the need to urinate more than usual but not at the point I was a few months ago. Again could this be due to the raised blood sugar level? If so what can I do to bring it down fairly quickly as I am about to go on a city tour and don't want to be caught short often?