Pharmacology · single question

An alcoholic patient with liver cirrhosis needs an antibiotic. Which is the SAFEST choice?

  1. Penicillin VK
  2. Clindamycin
  3. Acetaminophen
  4. Metronidazole
Show answer and explanation

Correct answer: A. Penicillin VK

  • A. Correct. Penicillin VK is primarily renally excreted and requires minimal hepatic metabolism — the safest antibiotic in liver disease.
  • B. Incorrect. Clindamycin is hepatically metabolized and should be avoided in severe liver disease.
  • C. Incorrect. Acetaminophen is an analgesic (not antibiotic) and is ABSOLUTELY CONTRAINDICATED in alcoholics with cirrhosis — severe hepatotoxicity risk.
  • D. Incorrect. Metronidazole is extensively hepatically metabolized and accumulates to toxic levels in cirrhosis.

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