Brand name(s)

All Day Allergy, All Day Allergy Children’s, GoodSense All Day Allergy, Indoor/Outdoor Allergy Relief, Zyrtec

What it is

Zyrtec (cetirizine) is an antihistamine that reduces the effects of natural chemical histamine in the body. Histamine can produce symptoms of sneezing, itching, watery eyes, and runny nose.

What it treats

Zyrtec is used to treat cold or allergy symptoms such as sneezing, itching, watery eyes, or runny nose. Zyrtec is also used to treat itching and swelling caused by chronic urticaria (hives).