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Acetylcysteine

Brand: Acetadote (Mucomyst discontinued)

Antidote / mucolyticUsed for: Acetaminophen overdose, mucus thinningOther High-Yield

No boxed warning on the current FDA label.

Caution
Anaphylactoid reactions with IV infusion (rash, wheezing); most protective within 8 hours of acetaminophen overdose.
Storage
Opened oral solution vials: refrigerate and use within 96 hours.

Common side effects

  • Nausea and vomiting
  • Rash or flushing during infusion
  • Unpleasant sulfur smell
  • Bronchospasm (inhaled form)

Key interactions

  • Activated charcoal may reduce oral absorption

Counseling points

  • Most protective when started within 8 hours of the overdose
  • The smell is expected and harmless
  • Report rash or trouble breathing during the infusion
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High-yield study aid for exam prep, not a substitute for the package insert or a pharmacist’s dispensing reference.