Norepinephrine Bitartrate for Injection 1 mg/mL Single-dose Vial 4 mL, 10/Box - AmnealNorepinephrine Bitartrate for Injection are used to treat a number of conditions, including heart attack, low blood pressure, and shock. They work by helping to keep the heart pumping and restoring blood pressure to normal levels. Norepinephrine Bitartrate for Injection are given by injection into a vein. Norepinephrine Bitartrate for Injection is a medication used to treat low blood pressure (hypotension) and shock. It acts as a vasoconstrictor,