Which organ should be monitored when taking acetaminophen?

Which organ should be monitored when taking acetaminophen?

• A. Heart
• B. Kidney
• C. Lungs
• D. Liver

Answer: (D)

Acetaminophen is processed in the liver, and the liver is the organ at risk for damage. A portion of the drug is converted to a toxic metabolite (NAPQI) that is normally detoxified by glutathione. When the dose is too high or glutathione stores are depleted (as in poor nutrition, chronic alcohol use, or liver disease), NAPQI accumulates and injures hepatocytes. This can raise liver enzymes and eventually lead to hepatic failure, so monitoring liver function tests and watching for signs of liver injury (like jaundice, RUQ pain, fatigue, or confusion) is essential. Staying within recommended dosing limits helps protect the liver, and if overdose is suspected, treatment with N-acetylcysteine restores glutathione and mitigates damage.

Acetaminophen is processed in the liver, and the liver is the organ at risk for damage. A portion of the drug is converted to a toxic metabolite (NAPQI) that is normally detoxified by glutathione. When the dose is too high or glutathione stores are depleted (as in poor nutrition, chronic alcohol use, or liver disease), NAPQI accumulates and injures hepatocytes. This can raise liver enzymes and eventually lead to hepatic failure, so monitoring liver function tests and watching for signs of liver injury (like jaundice, RUQ pain, fatigue, or confusion) is essential. Staying within recommended dosing limits helps protect the liver, and if overdose is suspected, treatment with N-acetylcysteine restores glutathione and mitigates damage.