Injecting insulin into a non-diabetic can be extremely dangerous and can lead to hypoglycemic coma, which can have varied outcomes from complete reversal to death. Insulin is naturally produced in the body to control blood sugar, and those who cannot produce it on their own inject it into their body as a method of treating diabetes. However, unsupervised administration of insulin into a non-diabetic may lead to many serious downfalls in the blood glucose level, which may prove to be fatal. The degree of the fall of the sugar level is rapid, and the first place that is affected in case of an overdose is the brain, which can lead to a comatose condition or death. Therefore, insulin should only be taken under the supervision of a healthcare professional and in the prescribed dosage.