Which statement best describes nitroglycerin for stable angina?

• A. It is a vasodilator used to treat stable angina; sublingual tablet or spray; relieves pain in about 3 minutes and lasts 30-40 minutes; recommended dose: 1 tab or 1 spray every 5 minutes for a max of 3 doses; if chest pain continues after the first dose, call 911
• B. It is an antibiotic used for chest infections
• C. It is a diuretic used for edema
• D. It is a beta-blocker used for hypertension

Answer: (C)

Nitroglycerin for stable angina is a nitrate vasodilator that lowers myocardial oxygen demand by dilating veins (reducing preload) and improving blood flow to the heart. It’s given sublingually as a tablet or spray for rapid relief of chest pain, typically within a few minutes, with effects lasting about 30–40 minutes. The usual dosing pattern is one tablet or one spray at the onset of chest pain, then another every 5 minutes for up to three doses total. If pain persists after the first dose, seek emergency care (call 911). Nitroglycerin isn’t an antibiotic, diuretic, or beta-blocker; those classes are used for different conditions.