Zyrtec Allergy All Day Tablets are an over-the-counter antihistamine commonly used to manage seasonal and year-round allergic symptoms. Typically taken orally once daily, the tablets are designed to provide up to 24 hours of symptom relief. Users should follow dosing instructions on the package, be aware of potential drowsiness, and consult a physician if pregnant, nursing, or treating children. Store in a cool, dry place and keep out of reach of children. Available at Broadway Food in Spokane, Texas.