Final answer:
The top two side effects of nitroglycerin, known as 'nitro', are headaches and hypotension. Headaches occur due to vasodilation, and hypotension, which can lead to dizziness and fainting, results from lowered blood pressure.
Step-by-step explanation:
Common Side Effects of Nitroglycerin
Nitroglycerin, often referred to as “nitro,” is a medication commonly used to treat and prevent episodes of angina pectoris (chest pain due to heart disease). Among its several possible side effects, the top two are typically headaches and hypotension (low blood pressure). Headaches are often described as severe and throbbing because nitroglycerin acts as a vasodilator, widening blood vessels and increasing blood flow. This very action, though beneficial for angina, can lead to hypotension, which might cause symptoms like dizziness, lightheadedness, or even fainting if one stands up quickly from a sitting or lying position (“orthostatic hypotension”).
Beyond these common effects, other side effects can include dizziness, lightheadedness, increased heart rate (tachycardia), nausea, and flushing of the skin. Being aware of these potential effects and managing them under a healthcare provider's guidance is essential for those taking nitroglycerin.