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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