Acetylcysteine Effervescent Tablets for Oral Solution

The following adverse reactions are described, or described in greater detail, in other sections of the labeling:

• Hypersensitivity Reactions [see WARNINGS AND PRECAUTIONS]
• Risk for Upper Gastrointestinal Hemorrhage [see WARNINGS AND PRECAUTIONS]

The most common adverse reactions have been identified from clinical studies or postmarketing reports of acetylcysteine. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure.

The most common adverse reactions were nausea, vomiting, other gastrointestinal symptoms, and rash with or without fever.