An overdose of acetaminophen will MOST likely cause:

An overdose of acetaminophen will MOST likely cause:

• A. Kidney failure
• B. CNS depression
• C. Liver failure
• D. Gastric ulcers

Answer: (C)

Overdosing on acetaminophen primarily damages the liver. In normal processing, most of the drug is safely metabolized, but a portion is converted to a highly reactive metabolite called NAPQI. When taken in excess, the liver’s glutathione stores are overwhelmed and cannot detoxify all the NAPQI. The reactive metabolite then binds to liver cell proteins, causing oxidative stress and cell death, which can progress to liver failure. Although kidneys can be affected too, liver injury is the most common and severe consequence of an acetaminophen overdose. CNS depression and gastric ulcers aren’t typical primary outcomes of acetaminophen toxicity. CNS effects would be more characteristic of other depressants, and gastric ulcers aren’t a direct result of this overdose. Early nonspecific symptoms like nausea can occur, but the defining danger is acute hepatotoxicity, which is why liver failure is the correct choice. If treated promptly with N-acetylcysteine, glutathione stores can be replenished and NAPQI detoxified, reducing the risk of severe liver damage.

Overdosing on acetaminophen primarily damages the liver. In normal processing, most of the drug is safely metabolized, but a portion is converted to a highly reactive metabolite called NAPQI. When taken in excess, the liver’s glutathione stores are overwhelmed and cannot detoxify all the NAPQI. The reactive metabolite then binds to liver cell proteins, causing oxidative stress and cell death, which can progress to liver failure. Although kidneys can be affected too, liver injury is the most common and severe consequence of an acetaminophen overdose.

CNS depression and gastric ulcers aren’t typical primary outcomes of acetaminophen toxicity. CNS effects would be more characteristic of other depressants, and gastric ulcers aren’t a direct result of this overdose. Early nonspecific symptoms like nausea can occur, but the defining danger is acute hepatotoxicity, which is why liver failure is the correct choice. If treated promptly with N-acetylcysteine, glutathione stores can be replenished and NAPQI detoxified, reducing the risk of severe liver damage.