Final answer:
Nitroglycerin, used to treat chest pain due to heart disease, can cause headaches, dizziness, nausea and vomiting as expected side effects due to its vasodilating effects on blood vessels.
Step-by-step explanation:
An expected side effect symptom of nitroglycerin, an ester used medically to relieve chest pain (angina) in heart disease, includes headaches due to the dilation of blood vessels. Additionally, nitroglycerin can cause a drop in blood pressure (hypotension), which might lead to dizziness or a feeling of lightheadedness. It is important to note that other side effects can include nausea and vomiting, a rapid or irregular heartbeat, and in some cases, a severe drop in blood pressure that could result in fainting or a feeling of "pins-and-needles" along one side of the body.