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Abstract The present study included 360 pregnant women who have been diagnosed as gestational diabetes according to the American Diabetes Association Criteria (fasting ≥92mg/dl, 1h ≥180 mg/dl and 2h≥ 153 mg/dl) using 2 or more abnormal plasma glucose values at 24- 28 week gestation with singleton pregnancy. The exclusion criteria included pregnant women with preexisting D.M and underlying diseases known to affect fetal growth or drug clearance. Randomly 120 patients were given insulin. Insulin (Mixtard: mixed human suspension ’crystalline 30% + protamine insulin 70%) was started at adose of 0.7 U/Kg of actual body weight, given subcutaneously two times per day that was increased as needed, 120 patients were given metformin (metformin was started at an oral dose of 850 mg once or twice daily with food and the dose was titrated up to a total of 2550 mg/day) and 120 patients were given glibenclamide (glibenclamide was started at an oral dose of 2.5 to 5 mg/daily and the dose was titrated up to total dose of 20 mg/day). Analysis of the results revealed that metformin and glibenclamide were effective medications for control of blood glucose in women with GDM who failed to achieve euglycemia with diet regimen and life style modification. The present study showed that metformin and glibenclamide are not associated with increased maternal or neonatal complications in comparison to insulin. |