I was given metformin and I too put on 11lb. This was in the first two weeks. I took it for two months, twice a day, My readings after meals rose from 17 to 19. I have cut out carbs and got that down to 15 but am very worried that this isn't good enough. I am now waiting for a referral to a diabetic nurse, it is now 3 months. Readings still17 to 15, never lower, even first thing. Will the diabetic nurse help me lower this? I feel my gp has just passed the buck really, just upped me to 4 metformin a day.