I have been using Metformin for 5 years and have recently discovered that I have stage3 Chronic Kidney disease. This is apparently, not dangerous and there are no symptoms. I have read that Metformin is not good for kidneys and am interested inlearning more about my risks. I am low carbing and using the minimum Metformin I can to keep my BGs down in the non diabetic range (ie. 2X 500 Metformin per day. and BG below 110 at any time) I also walk miles every week. and do water exercises regularly twice weekly.