Which statement about sublingual nitroglycerin is true?

Sublingual nitroglycerin is specifically designed for the rapid relief of angina attacks. When taken, it dissolves under the tongue, allowing for quick absorption into the bloodstream, leading to rapid vasodilation and relief from angina symptoms. This characteristic makes it essential for patients experiencing acute angina episodes, as timing is crucial in managing the pain.

In contrast, other options do not accurately reflect the properties or recommended use of sublingual nitroglycerin. It is not intended for long-term prevention of angina, nor is it recommended to be stored in the refrigerator; instead, it should be kept in a cool, dry place and protected from light. Additionally, it does not require food for better absorption since it is designed for sublingual administration, bypassing the gastrointestinal tract entirely.