Which organ is primarily at risk from acetaminophen misuse?

Prepare effectively for the Over-the-Counter Drugs, Herbal Supplements, Vitamins, and Minerals Test. Engage with detailed flashcards and interactive multiple-choice questions, accompanied by informative hints and explanations. Get exam-ready with confidence!

Multiple Choice

Which organ is primarily at risk from acetaminophen misuse?

Explanation:
Acetaminophen misuse primarily endangers the liver because its toxic metabolite is formed and detoxified there. Most of the drug is safely processed, but a portion becomes NAPQI, a reactive metabolite. Normally glutathione neutralizes NAPQI, but in overdose glutathione stores are depleted, allowing NAPQI to damage liver cells and can lead to hepatocellular injury or failure. The liver is the organ most at risk; the kidneys, heart, and lungs are not the primary targets in typical misuse.

Acetaminophen misuse primarily endangers the liver because its toxic metabolite is formed and detoxified there. Most of the drug is safely processed, but a portion becomes NAPQI, a reactive metabolite. Normally glutathione neutralizes NAPQI, but in overdose glutathione stores are depleted, allowing NAPQI to damage liver cells and can lead to hepatocellular injury or failure. The liver is the organ most at risk; the kidneys, heart, and lungs are not the primary targets in typical misuse.

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