A specific overdose for insulin cannot be defined however hypoglycaemia may develop over sequential stages if too high doses relative to the patient's requirement are administered:
Mild hypoglycaemic episodes can be treated by oral administration of glucose or sugary products. It is therefore recommended that the diabetic patient constantly carry sugar containing products.
Severe hypoglycaemic episodes, where the patient has become unconscious, can be treated by glucagon (0.5-1 mg) given IM or SC by a trained person, or glucose given IV by a medical professional. Glucose must also be given IV if the patient does not respond to glucagon within 10-15 min.
Upon regaining consciousness, administration of oral carbohydrate is recommended for the patient in order to prevent relapse.