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 used for the treatment and prevention of angina caused by coronary artery disease. Sublingual nitroglycerin and nitroglycerin spray are used to treat acute anginal attacks. Transdermal nitroglycerin, nitroglycerin ointment and capsules do not act rapidly enough to be used for acute anginal attacks. Nitroglycerin also is used intravenously to treat congestive heart failure associated with heart attack and high blood pressure during surgery.