Which side effects are commonly associated with nitroglycerin?

Nitroglycerin is a medication primarily used to relieve chest pain (angina) resulting from heart conditions. One of the most common side effects associated with its use is headache, which occurs due to the dilation of blood vessels and subsequent changes in cerebral blood flow. Additionally, dizziness is commonly reported as nitroglycerin can also lead to hypotension (lowered blood pressure), particularly when the patient transitions from lying down to a standing position. This combination of headache and dizziness makes side effects B the correct choice, as they are directly linked to the pharmacological action of the drug on the vascular system. Understanding these side effects is crucial for healthcare professionals, as they should inform patients about possible reactions and how to manage them effectively.