Effectiveness of Metformin Compared to Insulin in Pregnant Women With Mild Preexisting or Early Gestational Diabetes

Inclusion Criteria

• •Receiving prenatal care at University of North Carolina (UNC), Chapel Hill Obstetric clinics and planning delivery at UNC Women's Hospital
• •Diagnosis of Diabetes prior to pregnancy with use of an oral hypoglycemic agent or dietary control
• •Diagnosis of early gestational diabetes prior to 20 weeks gestation via abnormal 3 hour glucose challenge testing using the national diabetes data group (NDDG)criteria
• •Less than 24 weeks at study enrollment
• •Singleton or twin pregnancy
• •English or Spanish speaking
• •Able to give informed consent