Zyrtec 24 HR Allergy Relief Liquid Gels provide long-lasting relief from a wide range of indoor and outdoor allergy symptoms, including runny nose, sneezing, itchy, watery eyes, and itchy nose and throat. This prescription-strength allergy medicine starts working quickly and provides up to 24 hours of effective relief when taken as directed. Each capsule contains 10mg of cetirizine hydrochloride, a powerful antihistamine that effectively treats allergies caused by dust, mold, pet dander, pollen, and more. Zyrtec is the #1 allergist-recommended brand among over-the-counter oral antihistamines, offering reliable relief for adults and children 6 years and older.