Zyrtec is an antihistamine medication containing 10mg of Cetirizine dihydrochloride per tablet. It comes in a package of 20 film-coated tablets and is used to provide relief from allergy symptoms like sneezing, runny nose, and itchy eyes. This medication is manufactured by GSK and comes in film-coated tablet form. Each tablet contains 10mg of the active ingredient Cetirizine dihydrochloride. The package contains 20 tablets arranged in 2 blister packs of 10 tablets each.