Zyrtec oral drops contain Cetirizine dihydrochloride 10mg/mL, an antihistamine medication used to relieve allergy symptoms such as runny nose, sneezing, watery eyes, and itching. The 10mL solution comes in a convenient drop form for precise dosing. As a prescription antihistamine medication, Zyrtec drops should only be taken under medical supervision. The drops contain Cetirizine dihydrochloride as the active ingredient at a concentration of 10mg/mL. Always follow your healthcare provider's instructions regarding proper dosage and duration of use. Keep out of reach of children and store at room temperature away from light and moisture.