1 You'll need to avoid strenuous activities, but you may be able to continue normal daily activities, such as going to work. 2  Talk to your doctor about an appropriate level of activity for you. 3  Follow a balanced diet.
Nitroglycerin works by causing your veins to expand or dilate, known as venodilation. It also works on dilating the coronary arteries, contributing to the relief of angina.
Nitroglycerin is injected intravenously for prophylaxis and long-term treatment of angina pectoris, control of blood pressure during surgery or creation of controlled hypotension during surgery, and as an adjunct in the treatment of congestive heart failure.