When the patient overdose insulin, hypoglycemic symptoms arrive which include: Intense hunger, anxiety, apathy, trembling, sweating, vomiting. In mild hypoglycemia it is enough to have sweet beverages or carbohydrate-rich food. It is advisable to rest. The patient should carry with them sugar cubes, glucose or sweets. It is not advisable to have chocolate that contains fat, which delay glucose absorption. Severe hypoglycemia may lead to convulsion and loss of consciousness, or death. If a patient is in coma it is necessary to administer glucose into the vein. When it comes to overdose of insulin hypoglycemia may develop with hypokaelamia (a drop in potassium concentration in blood) with the succeeding myopathy. In acute hypoglycemia when patients are not able to take food they should be administered 1 mg of glycogen into the muscle and/or glucose intravenously.