Benadryl

Benadryl is a brand name that Pfizer use for several different allergy medicines.

In the U.S., Benadryl is antihistamine. It is also formulated in combination with other active ingredients and sold under variations of the Benadryl name.
In the U.K., Benadryl Allergy Relief is acrivastine, a second generation antihistamine.
In the U.K., Benadryl Once a Day is cetirizine, a second generation antihistamine.

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