What is the route for the initial nitroglycerin dose?

What is the route for the initial nitroglycerin dose?

• A. Oral
• B. Sublingual
• C. Intravenous
• D. Inhaled

Answer: (B)

The main idea is that nitroglycerin needs to act quickly to relieve chest pain from angina. Giving it under the tongue (sublingually) allows it to be absorbed rapidly through the oral mucosa and into the bloodstream, bypassing the liver’s first‑pass metabolism. This quick absorption leads to prompt vasodilation, which reduces the heart’s oxygen demand and can alleviate symptoms within minutes. Other routes would slow or complicate delivery: oral administration goes through digestion and is largely inactivated by the liver, intravenous delivery requires IV access and carrying out in a clinical setting, and inhaled isn’t a standard route for nitroglycerin. So the initial dose is given sublingually to achieve fast, reliable effect.

The main idea is that nitroglycerin needs to act quickly to relieve chest pain from angina. Giving it under the tongue (sublingually) allows it to be absorbed rapidly through the oral mucosa and into the bloodstream, bypassing the liver’s first‑pass metabolism. This quick absorption leads to prompt vasodilation, which reduces the heart’s oxygen demand and can alleviate symptoms within minutes. Other routes would slow or complicate delivery: oral administration goes through digestion and is largely inactivated by the liver, intravenous delivery requires IV access and carrying out in a clinical setting, and inhaled isn’t a standard route for nitroglycerin. So the initial dose is given sublingually to achieve fast, reliable effect.