Insulin administration is needed daily to control your blood glucose levels if you have type 1 diabetes. The exact dose of insulin varies and is calculated by your doctor. If an insulin overdose occurs, the blood sugar concentration can become too low, which can result in a coma and even death.
Orange juice, table sugar or any other pure form of sugar is usually given to raise blood sugar level. Glucose can also be injected into the bloodstream if the patient is in a coma. If the insulin dose is not enough, the patient can go into a coma, just as in an overdose. A test of blood glucose levels is needed to distinguish between these 2 types of comas. A low blood glucose level means the patient has received an overdose of insulin, while a high level means they do not have enough insulin.