Zirtek Oral Solution is used to treat symptoms of allergies such as hay fever or dust allergy. Zirtek Oral Solution contains the active ingredient cetirizine, which is known as a non-sedating antihistamine. Cetirizine works by blocking the effects of histamine which your body makes as part of its natural defense system. Allergies cause the body to release extra histamine which causes irritation of the eyes and nasal passages, leading to sneezing, itch, and streaming nose and eyes. By blocking this chemical, the drug in Zirtek alleviates allergic symptoms.
