I have type 2 diabetes, I am 59 have had had since age 40, female thin. I have been taking mediformin started off at 500 mg x twice a day for a long time,this past year my a1c went from 6.50 to 7.8 my Dr uped my dose to 1000 twice a day, my a1c went back to 6.5 I began having severe diahrra, for weeks. Dosage back to 500 mg twice a day. Morning sugars high. Dr switched me to 500 3x day. Now I have severe diahrra again. Dr said there is no other drug she can give me. Any idea what I can take? I am losing weight and getting week from the diahhra