Azelastine Relieves Nasal Itching and Discharge in Persons with Allergic

Azelastine relieves nasal itching and discharge in persons with allergic rhinitis by antagonism of which receptors?

A) histamine H₁
B) histamine H₂
C) serotonin 5-HT₁
D) serotonin 5-HT₂
E) serotonin 5-HT₃

Correct Answer:

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