What is an advantage of using a nitroglycerin patch compared to sublingual tablets?

Using a nitroglycerin patch does indeed offer the advantage of a longer duration of action compared to sublingual tablets. Sublingual nitroglycerin is typically used for the rapid relief of acute angina episodes, providing quick effects within minutes but lasting only a short time—usually about 30 to 60 minutes.

On the other hand, a nitroglycerin patch delivers a continuous, controlled amount of medication over an extended period, generally 24 hours. This allows for the management of angina symptoms throughout the day without the need to take multiple doses as with sublingual tablets, making it advantageous for patients who experience frequent angina attacks.

This prolonged release helps maintain therapeutic levels of the medication in the bloodstream, which can be more convenient and effective for some patients in managing their chronic angina.