Zyrtec is an antihistamine medication containing 10mg of cetirizine dihydrochloride per tablet. It comes in a pack of 20 film-coated tablets and is manufactured by GSK. This medication is used to relieve allergy symptoms like sneezing, runny nose, and itchy eyes. The film coating on the tablets makes them easier to swallow while protecting the active ingredient. As this is a medication, it should only be taken according to the prescribed dosage and instructions provided by your healthcare provider. Store in a cool, dry place away from direct sunlight and keep out of reach of children.