Question

Difference between first generation and second generation anti histamine

Answer 1

First-generation OTC antihistamines include diphenhydramine (eg, Benadryl), chlorpheniramine (eg, Chlor-Trimeton), and clemastine (eg, Tavist); second-generation products include fexofenadine (eg, Allegra), loratadine (eg, Claritin and Alavert), and cetirizine (eg, Zyrtec).

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Answer 2

Answer:

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