Norepinephrine Bitartrate Injection 1 mg/mL Single-dose Vial 4 mL, 10/Box (RX)Norepinephrine Bitartrate for Injection is a medication used to treat low blood pressure in patients with shock, low blood pressure during or after surgery, and certain other medical conditions. It works by constricting blood vessels and increasing heart rate, which helps to raise blood pressure. It may also be used in some cases of heart attack or cardiac arrest to improve heart function. Norepinephrine Bitartrate for Injection are used to treat a