Similar questions:
Diphenhydramine HCL (Benadryl), chlorpheniramine maleate (Chlor-Trimeton), loratadine (Claritin), and desloratadine (Clarinex) are antihistamines at which histamine receprot site listed below?
H1-receptor siteAntidepressants and Antihistamines
Antihistamines act by
blocking the actions of histamine by competitive inhibitionPlanets 33
Which of the following antihistamines is most commonly used as preoperative medication?
PromethazineAnti inflammatory
The mechanism of action of H1 antihistamines is
competitive antagonismAnti inflammatory
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