Pitocin Injection 10u/mL, 1mL SDV. Pitocin is commonly used for the drug Oxytocin, a hormone found naturally in the pituitary gland used to help start or continue labor and sometimes to control bleeding after delivery. Given intravenously, it is also used to help a mother expel the placenta post delivery, to shrink the uterus post miscarriage, and helps get a mother's milk flowing for breastfeeding. 25/BX. Priced per box. FREE Shipping!.