Zyrtec is a fast acting daily anti-allergy treatment for seasonal rhinitis, or ‘hayfever’, and other allergic conditions. Zrytec lasts 24 hours so it only needs to be taken once a day and it offers most people relief from symptoms within about 20 minutes.
The symptoms of hayfever, which is the most common form of allergy, include sneezing, a runny and itchy nose, and watery, itchy eyes. Each tablet of Zyrtec contains 10mg of Cetirizine Hydrochloride, an antihistamine that counteracts the effects of histamine produced by the body in response to allergies. Zyrtec blocks histamine sites so that histamine is not released. UPC_403099006280