Final answer:
The number one complaint when taking nitroglycerin is a headache. Other common complaints include flushing and dizziness.
Step-by-step explanation:
The number one complaint when taking nitroglycerin is a headache. Nitroglycerin widens the blood vessels in the body, including those in the head, which can lead to headaches. This is a common side effect of the medication.
Another common complaint is flushing or feeling hot. Nitroglycerin can cause blood vessels to dilate, leading to a warm or flushed sensation.
Lastly, some people may experience dizziness or lightheadedness when taking nitroglycerin. This can be due to the changes in blood vessel dilation.