I have PCOS and I am on metformin for the moment. I have also been put on let.... I can't remember the rest of how it is spelled. I am not at home so I can't look at it. We have been trying for 10 years and I am overweight. I have lost close to 10 lbs while taking metformin but it is going so slowly. Does anyone else have this problem? Is it more common than I realize?