 Study Population: Seventy two patients with type 1 diabetes on treatment with either continuous subcutaneous insulin infusion CSII; also known as insulin pump or multiple four or more injections of insulin per day will be included in the study. They will be randomized into 4 groups of 18 patients each. The patients will be randomized to placebo or 0.6 mg, 1.2 mg or 1.8 mg liraglutide daily. In view of the possibility of hypoglycemia and the side effect of nausea all patients will be started on 0.6 mg of liraglutide per day. The dose will then be titrated up to 1.2 and 1.8 mg on a weekly basis. No increases will be made once the target dose has been achieved in each group. Subjects will be recruited from our own patients, our existing database and from advertisements. The following insulin preparations will be used in the study: insulin detemir, glargine, aspart, glulisine and lispro. Subjects will continue to obtain their insulin supplies from their respective pharmacies. 