What is the role of N -acetylcysteine (NAC) in the treatment of acetaminophen toxicity/poisoning?

Updated: Jan 17, 2020
  • Author: Susan E Farrell, MD; Chief Editor: Michael A Miller, MD  more...
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Answer

Admit patients with acetaminophen concentration above the "possible" line on the Rumack-Matthew nomogram for treatment with N -acetylcysteine (NAC). NAC is nearly 100% hepatoprotective when it is given within 8 hours after an acute acetaminophen ingestion, but can be beneficial in patients who present more than 24 hours after ingestion. NAC is approved for both oral and IV administration.


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