Diabetes Mellitus is the most common emerging disorder in developing countries. It is a metabolic disorder charctrized by hyperglycemia (High Blood Sugar Levels) with or without glycosuria, resulting from an absolute or relative deficiency of insulin. Insulin is the hypoglycemic, antidiabetic factor and the protein hormone, which regulate the blood glucose, secreted by the beta cells of islets of langerhans. With changing environs, urbanization and altered lifestyles, diabetes is also increasingly identified as a major cause of morbidity and mortality in India. Diabetes mellitus is a chronic disease for which there is no known cure except in very specific situation. Management concentrates on keeping blood sugar levels as close to normal("euglycemia") as possible, without causing hypoglycemia. This can usually be accomplished with diet, exercise, and use of appropriate medications.