About 95% of insulin-dependent diabetics can be managed satisfactorily with one or a combination of the follwoing insulin preparations: single-peak U-100 beef-pork NPH, Lente, and Regular. Complications of insulin therapy are commonly attributable to poor regulation of insulin dosage, irregular or excessive food intake, or unusual physical activity. One form of hyperglycemia is induced by insulin. Generalized allergic reactions to insulin sometimes require desensitization. Insulin-resistant patients are treated with a glucocorticoid.