I will ask my doctor next appointment but anyone has any experience? I am on 1000 mg Metformin XR per day (500mg at breakfast and 500 mg after dinner). However, I notice that after lunch my BG goes quite high sometimes (12 mmol). A). Would taking my evening dose earlier (after lunch instead of after dinner) make a difference? B). Would taking an extra 500mg after lunch make a difference? I know the better approach is to change what i eat, which I will pursue. However if i just find that my BG is running at 12 or 13, would a Metformin make a difference?