Nitroglycerin for Injection 5 mg/mL Single Dose Vials 10 mL, 25/Tray (Rx)American Regent Nitroglycerin Injection is a 5 mg mL, single dose vial of Nitroglycerin in 10 mL. American Regent Nitroglycerin Injection is indicated for the relief of an acute attack of angina pectoris. Nitroglycerin is a type of organic nitrate that is rapidly absorbed from the gastrointestinal tract and distributed throughout the body. It is a potent vasodilator with effects on both arteries and veins. Nitroglycerin produces its pharmacologic