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.
In medicine, nitroglycerin is used as a medicine for angina pectoris, a painful symptom of ischemic heart disease caused by inadequate flow of blood and oxygen to the heart. Nitroglycerin corrects the imbalance between the flow of oxygen and blood to the heart.