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.
Low blood glucose or hypoglycemia is one of the most common problems associated with insulin treatment, but it can also happen to people with diabetes taking pills. In general, hypoglycemia is defined as a blood glucose level below 70 mg/dl. Low blood glucose is usually unpleasant, with the most common symptoms including feeling shaky, sweaty and having one's heart pound. The most common reasons for hypoglycemia are too much diabetes medicine, too little food or a delayed meal, or too much or unplanned activity.