Carbophage contains Metformin, which is the only medication that can result in weight loss. Side effect of this medication includes abdominal distension, abdominal discomfort, nausea and diarrhoea but most often transitional. On medium and long term basis this medication is very safe for most of the patients. This stabilises sugar rather causing low sugar compared to some other medication.You are overweight so try to reduce your weight. You should get your HbA1c done which gives us average 3 monthly reports besides getting Microalbumin urine, fasting lipids, KFT, LFT and TSH at frequent intervals. You should also get your retinal examination (fundus) examination done by an ophthalmologist on annual basis.