A client asks the nurse what the most commonly used OTC antitussive is. Which response by the nurse is most appropriate?
1. "Dextromethorphan"
2. "Guaifenesin (Mucinex)"
3. "Benzonatate (Tessalon)"
4. "Acetylcysteine (Mucomyst)"
1
Rationale 1: The most frequently used OTC antitussive is dextromethorphan, which is included in most severe cold and flu preparations. Dextromethorphan is chemically similar to the opioids and also acts on the CNS to raise the cough threshold. Although it does not have the abuse potential of opioids, in large amounts, dextromethorphan can cause slurred speech, dizziness, drowsiness, euphoria, and lack of motor coordination.
Rationale 2: Guaifenesin (Mucinex) is an expectorant.
Rationale 3: Benzonatate (Tessalon) is not available OTC.
Rationale 4: Acetylcysteine (Mucomyst) is a mucolytic.
Global Rationale: The most frequently used OTC antitussive is dextromethorphan, which is included in most severe cold and flu preparations. Dextromethorphan is chemically similar to the opioids and also acts on the CNS to raise the cough threshold. Although it does not have the abuse potential of opioids, in large amounts, dextromethorphan can cause slurred speech, dizziness, drowsiness, euphoria, and lack of motor coordination.
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