Zyrtec is a children's antihistamine medication containing cetirizine dihydrochloride (1mg/ml) in a 75ml banana-flavored oral solution. Manufactured by GSK, this kid-friendly formulation helps relieve allergy symptoms while being easy to administer. The banana-flavored syrup format makes it easier for children to take their allergy medication. The oral solution comes with precise dosing instructions that should be followed according to the child's age and weight as prescribed by a healthcare provider. As with all medications, this should be stored safely out of reach of children and used only as directed.