In diabetes mellitus, the body loses its ability to use glucose, which is the energy source. It occurs because of lack of insulin in blood or due to faulty action of insulin. It causes high blood sugar levels that can cause harm to the heart, nerves, the kidneys, the eyes, and blood vessels.
Anti-diabetic medication acts by improving the secretion of insulin and helps facilitate the action of insulin on cells. It leads to utilization of glucose and reduction in blood sugar levels. Anti-diabetics protect the kidney, the heart, nerves, and the eyes from long-term complications of high blood sugar levels.