Initially I was on Rx Actos and then switched a few years ago to Metformin 1000 mg. My most recent Aic is 6.8
Glucose serum 142
Creatinine , serum 0.74
urine trace glucose
Previously my Aic was in the 5.8 range.
My doctor wants me to go on insulin is this too soon to go on insulin as my Aic is not that elevated. Does Metformin have less effect over long term use ?