Q: For more than a year, I've been carrying a small vial of nitroglycerin pills to use in case of angina. But when I checked the bottle recently, I discovered that the jostling in my pocket had ...
ANSWER: Those nitroglycerine pills (nitro pills) rapidly open blood vessels when a person is suffering from angina. Angina is chest pain that occurs when there is not enough blood flow to the heart.