Zyrtec is an antihistamine medication containing 10mg of cetirizine dihydrochloride per tablet. These film-coated tablets, manufactured by GSK, are used to treat allergy symptoms like sneezing, runny nose, and itchy eyes. The package contains 20 film-coated tablets. As this is a medication, proper dosage and usage instructions should be followed according to your healthcare provider's recommendations. The film coating makes the tablets easier to swallow while masking any bitter taste.