what is the side effects of diabetes
Potential side effects of common diabetes drugs*. 1  Sulfonylureas: low blood sugar, upset stomach, skin rash or itching, weight gain. 2  Biguanides/Metformin: sickness with alcohol, kidney complications, upset stomach, tiredness or dizziness, metal taste. 3  Alpha-glucosidase inhibitors: gas, bloating and diarrhoea.