What is a side effect of nitroglycerin?

A. Urinary frequency: Nitroglycerin does not affect renal function in a way that would cause increased urination. Urinary frequency is not a recognized side effect of nitroglycerin therapy. B. Dry cough: Dry cough is commonly associated with ACE inhibitors, not nitroglycerin. Nitroglycerin’s pharmacologic effects do not typically involve the respiratory system in this manner. C. Hypoglycemia: Nitroglycerin does not alter blood glucose levels. Hypoglycemia is unrelated to its mechanism of action as a vasodilator. D. Flushing: Flushing is a common side effect of nitroglycerin due to peripheral vasodilation. The widening of blood vessels increases blood flow to the skin, resulting in warmth and redness, which is typically mild and transient.