Which of the following is a common adverse reaction of Nitroglycerin?

Headaches are a well-documented and common adverse reaction to nitroglycerin. This medication works by relaxing blood vessels, leading to vasodilation, which can increase blood flow but also cause certain side effects like headaches due to the dilation of cerebral blood vessels.

While nausea, fatigue, and diarrhea can occur with various medications, they are not as specifically associated with nitroglycerin as headaches are. The headache induced by nitroglycerin is often described as a throbbing sensation, mirroring the effect of increased blood flow to the head. Understanding this specific side effect can be crucial for patients using nitroglycerin, as they might need guidance on how to manage headaches that result from their treatment.