So sorry to hear about your kidney damage.
Metformin does not damage kidneys, that damage is done by high blood sugars.
The biggest concern is when metformin is used and it doesn't adequately control blood sugars. In such case other medications or insulin should be started to get good blood sugar control. The sooner blood sugars can be under tight control the better, as far as preventing / healing damage.
Diet is also critical in blood sugar control (low carb / carbohydrate controlled is often best).
Normal blood sugars should be in the range of 70 - 120, all the time. 70 - 95 fasting, and 120 or less after eating.
Hope this helps anyone who will read this message.
Thanks for the warning on it also I think insulin is way better. I'm diabetic also.
He is right my common-law just died and had some kidney problems for eating to much sugar. It goes like that when you are diabetic sugar is addicting take some Free Form L-Glutamine it will stop your sugar cravings. When you are told by doctor to stop eating it you want it even more.Google: What L-Glutamines does for craving sugar. Google also how much to take I take 3 500 Mg a day on empty stomach. It is good to take Vitamin B-12 also I take the Sublingual B-12 10,000 Mcg daily with it.
It will give you energy taken together.
You can get it really reasonable at Piping rock vitamins.