How many puffs of gtn spray should you give in an emergency?

In an emergency, such as a suspected angina attack, a typical recommendation is to administer one puff of nitroglycerin (GTN) spray under the tongue. If symptoms persist after five minutes, a second puff may be given, and if pain continues after another five minutes, a third puff can be administered. However, it's crucial to seek emergency medical help if symptoms do not improve after the first dose. Always follow specific medical advice and guidelines provided by healthcare professionals.