Name a common long-acting nitrate used in the treatment of angina.

The common long-acting nitrate used in the treatment of angina is Isosorbide mononitrate. This medication is specifically designed for sustained release, allowing it to maintain therapeutic levels in the bloodstream over an extended period. This extended duration of action is particularly beneficial for patients who need ongoing angina prevention, as it helps to relieve the symptoms by dilating blood vessels and reducing myocardial oxygen demand.

Isosorbide mononitrate works by converting to nitric oxide, which relaxes vascular smooth muscle, leading to vasodilation. This action decreases preload and afterload, ultimately reducing the heart's workload and alleviating the pain associated with angina. Its long-lasting effect makes it a preferred choice for chronic management of angina, ensuring patients can maintain better control over their symptoms throughout daily activities.

Other options in the question serve different purposes in angina treatment. Nitroglycerin is primarily used for acute episodes rather than long-term management. Amlodipine is a calcium channel blocker and is used in the management of hypertension and also has antianginal properties, but it does not belong to the nitrate class. Propranolol is a beta-blocker that can help reduce angina by decreasing heart rate and myocardial oxygen demand, but