Benedryl or namely Diphenhydramine(the chemical name) can give you a feeling of euphoria. It is not safe to take in large amounts and should not be used in this manner. but if you are going to BE VERY CAREFUL! 25-50 mgs is the normal dose. if you take more than that you could go into respiratory or cardiac arrest.
Insulin deficiency (symptom description): For a medical symptom description of 'Insulin deficiency', the following symptom information may be relevant to the symptoms: Diabetes-like symptoms (type of symptom). However, note that other causes of the symptom 'Insulin deficiency' may be possible.
High blood sugar almost always happens in people who have diabetes. High blood sugar is also called high blood glucose, or hyperglycemia. Insulin is a hormone that helps the body move glucose (sugar) from the blood into muscle or fat, where it is stored for later when energy is needed. Symptoms of high blood sugar can include: Being very thirsty or having a dry mouth.