Is insulin deadly?

Insulin therapy is a treatment for patient with diabetes. Insulin is a hormone produces in pancreas help to manage glucose level in body. When glucose level increase (average level 90mg/100ml) in human body pancreas produce insulin it converts extra glucose into glycogen and stores in body like that when glucose level decreased glucagon produced and it converts stored glycogen into glucose. When over dose insulin used it converts all the glucose into glycogen. So suddenly you may feel fit or sometimes you may die so it is advised to get doctors concern before use insulin.