I am diabetes2 patient since last 26 year. At present my blood sugar fasting & P. P. Are 89 & 137 mg/dl & HbA1C is 4.8%, taking glimepiride1 mg od half hour before lunch & Metformin SR 1 gm od after lunch since last 34 months. I am suffering some side effects due to metformin such as excessive gas formation whole day, indication, heavy constipation, rashes & itchiness on back skin, weakness, dizziness & weightless. Hence to minimise above side effects I want to replace any other equivalent medicine in place of Metformin SR, which should be also suitable to me ie a heart's patient whose hearts bare metal standing was done on dt 29-8-13 for which I am taking Ecosprin 75 mg od daily, Atorvastatin10 mg od & Ramipril2.5 mg od on alternate days. Hence please suggest such medicine with potency which have less side effects in place of Metformin SR 1000 mg od. Thanks.