When is intermittent IV N -acetylcysteine (NAC) indicated 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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Intermittent IV infusion may be considered for late-presenting or chronic ingestion. A loading dose of 140 mg/kg IV (diluted in 500 mL D5W) is infused over 1 h. Maintenance doses of 70 mg/kg IV are given every 4 hours for at least 12 doses (dilute each dose in 250 mL of D5W and infuse over a minimum of 1 hour).

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