I have been prescribed Metformin from the Diabetic Specialist recently as they have found that I am probably a type 2 diabetic and not a type 1 which they initially treated me for, so I am coming of the Insulin now and using the tables as prescribed, so far its seems to be going well and blood sugars levels are okay however even after a couple of biscuits I had a terrible pain in upper chest area and I had to quickly drink some mint tea to try and alleviate the problem as it wasn't pleasant, I am trying to fiqure what my boundaries are as I am probably going to have to live with this situation. Has anyone else had this problem? when I was on insulin and could manage what I eat accordingly but the tablets are a different story.