Which medication should NOT be administered to a patient with active liver disease?

Which medication should NOT be administered to a patient with active liver disease?

• A. Ibuprofen
• B. Diphenhydramine
• C. Aspirin
• D. Acetaminophen

Answer: (D)

Acetaminophen should be avoided in a patient with active liver disease because its metabolism relies on the liver, and a toxic metabolite can form if the liver is compromised. Most of the drug is safely processed, but a portion is converted to NAPQI, a reactive compound. Normally, glutathone detoxifies this metabolite, but in liver disease the liver’s detox systems are impaired and glutathione stores may be depleted. This allows NAPQI to accumulate and damage liver cells, increasing the risk of acute liver injury even at standard doses. Because of this, acetaminophen poses the greatest danger among the options when liver function is impaired, whereas the other medications do not carry the same direct hepatotoxic mechanism in this context (though they have their own safety considerations).

Acetaminophen should be avoided in a patient with active liver disease because its metabolism relies on the liver, and a toxic metabolite can form if the liver is compromised. Most of the drug is safely processed, but a portion is converted to NAPQI, a reactive compound. Normally, glutathone detoxifies this metabolite, but in liver disease the liver’s detox systems are impaired and glutathione stores may be depleted. This allows NAPQI to accumulate and damage liver cells, increasing the risk of acute liver injury even at standard doses. Because of this, acetaminophen poses the greatest danger among the options when liver function is impaired, whereas the other medications do not carry the same direct hepatotoxic mechanism in this context (though they have their own safety considerations).