Adding Metformin to Insulin in Controlling Pregestational and Gestational Diabetes Mellitus

"Insulin dose:~* 0.7 IU/Kg (at the second trimester of pregnancy).~* 0.8 IU/Kg (at the third trimester of pregnancy). Insulin dose was raised at a rate of 1 IU for every 10 mg/dl higher than the target blood glucose concentration."

"Oral metformin at a dose of 1500 mg divided into three doses, were taken with meals, in addition to insulin.~If the target blood glucose concentrations were not attained, the dose of metformin was raised to 2000 mg per day."