| I don't know about the efficacy of metformin, as i'veonly been on it x 5 months and have done okay with it. I have read that eventually many T2s eventually have to go on insulin. However, there are other medications you could try before that. Also, from reading the many posts here, there are many who have had diabetes for a lot longer than 5-7 years and aren't yet on insulin. I guess its one of those "individualized" things. I'd suggest you go to your doctor and see what the next step would be as far as medications. I know many diabetics who take metformin as well as another medication for diabetes. Let us know what your doc says. | 
