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Q: Dextromethorphan is used in cough syrups as
  • A. Expectorant
  • B. Mucolytic
  • C. Bronchodilator
  • D. Suppressant
Correct Answer: Option D - Dextromethorphan received FDA approval in 1958 for its use as cough suppressant. It is one of the most common compounds found in most over-the-counter antitussives. For the past 50 years in, 2010, the FDA approved the use of dextromethorphan for pseudobulbar affect in combination with quinidine.
D. Dextromethorphan received FDA approval in 1958 for its use as cough suppressant. It is one of the most common compounds found in most over-the-counter antitussives. For the past 50 years in, 2010, the FDA approved the use of dextromethorphan for pseudobulbar affect in combination with quinidine.

Explanations:

Dextromethorphan received FDA approval in 1958 for its use as cough suppressant. It is one of the most common compounds found in most over-the-counter antitussives. For the past 50 years in, 2010, the FDA approved the use of dextromethorphan for pseudobulbar affect in combination with quinidine.