In this case study , maternal complications were reported by manufacturers of oxytocin drugs. Woman of Para 2,38 years and 39th weeks of pregnancy with diagnosis of uterine inertia was administered oxytocin 2.0 unit IV at 10.00 AM and the infusion rate was increased to 20 mu/minute which resulted in uterine rupture. Laparotomy revealed massive hemorrhage in the abdominal cavity and lacerations in posterior uterine wall.