Type I Diabetic Insulin Study

The purpose of this study is to find out whether the addition of HDV to Humalog® will improve diabetes control by reducing high blood sugar after meals and/or reducing the risk of low blood sugar (hypoglycemia) during insulin treatment. The safety and tolerability of Humalog® with or without added HDV will also be evaluated. The study drugs will be administered by subcutaneous (under the skin) injection.