Which statement about nitroglycerin tablets is correct?

Which statement about nitroglycerin tablets is correct?

• A. Tablets should be protected from heat and light
• B. Headache is not a side effect
• C. Tablets should be stored in a damp, warm place
• D. They have no effect on blood pressure

Answer: (A)

Nitroglycerin tablets are highly sensitive to heat and light, so they must be protected from these factors to maintain potency. Exposure to heat or bright light degrades the drug, making it less effective when used for angina relief. Headache is a common side effect because nitroglycerin causes vasodilation, including in cerebral vessels, so the statement that headache isn’t a side effect isn’t correct. They also lower blood pressure by dilating veins and arteries, so saying they have no effect on blood pressure is false. To keep their effectiveness, they should be stored in a tightly closed, light-protective container and kept away from heat and moisture.