About 10yrs ago my sister was diagnosed as having Type 2 Diabetes. She was prescribed Metformin. However, during a recent check up at her medical centre the nurse cut her tablets from two a day to one, then at her next visit she was taken off them altogether and told to stick to her diet. Is it safe to discontinue taking the metformin after all this time? I think her reading is probably on average around 8-ish.