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.
1 Taking nitroglycerin can lower your blood pressure, which could cause you to pass out if you are standing up. 2  For sudden episodes of angina, use nitroglycerin in a tablet or liquid spray form. 3  Place the under-the-tongue (sublingual) tablet under your tongue. 4  Leave it there until it dissolves.