is benadryl and cetirizine the same thing?
Zyrtec and Benadryl are two antihistamine medications that can be purchased over the counter. They are both used to treat allergy symptoms such as runny nose, itching, and sneezing. While Zyrtec is a second-generation antihistamine, Benadryl is a first-generation antihistamine that can cause more drowsiness.