Antihistamines Act Through Which Mechanism

question 37

Multiple Choice

Antihistamines act through which mechanism?

• A) Liquefying pulmonary secretions
• B) Increasing secretions, reducing viscosity, and aiding in expectoration of sputum
• C) Suppressing coughing
• D) Competitively antagonizing histamine1 receptor sites
• E) Constricting blood vessels in the respiratory tract

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