A Patient Has Recently Been Prescribed Nitroglycerin for Treatment of Angina

A patient has recently been prescribed nitroglycerin for treatment of angina. He calls the nurse and tells her that he is having frequent headaches. Which of the following responses to the patient is correct?

A) "Stop taking the nitroglycerin and see if the headaches improve."
B) "Immediately report to the emergency department as nitroglycerin may cause brain hemorrhage."
C) "Headaches are a common side effect of nitroglycerine because it causes vasodilation."
D) "The headache has nothing to do with the nitroglycerin, see your doctor for further investigation."