I have type 2 diabetes diagnosed 1989. I have taken gliclazide for many years with no problems. 6 months ago I was prescribed metformin to take as well because my blood glucose levels had increased. I weighed just over 46kg then but since starting to take it I have lost 5kg. My diet has not changed. What can I do to regain my weight? Previously my weight remained almost the same with very little variation and I felt well. Now I get tired easily.