Nitrolingual Pumpspray spray is a nitrate. It works by dilating (widening) blood vessels. Chest pain occurs when the heart needs more oxygen than it can get. Dilating blood vessels allows blood to flow more easily. This reduces the heart's workload and the amount of oxygen needed by the heart.
Nitroglycerin is used as a heart medication for angina pectoris (ischemic heart disease) or myocardial infarction.