Get 24-hour hay fever and both indoor and outdoor allergy relief that works fast and stays strong with Zyrtec Allergy Dye-Free Chewables. From the #1 allergist-recommended brand among over-the-counter oral antihistamines, these anti-allergy tablets provide powerful all-day relief from your worst seasonal and upper respiratory allergy symptoms. Each prescription strength chewable tablet contains 10 mg of the antihistamine cetirizine HCl to fight allergy symptoms such as runny nose, sneezing, itchy, watery eyes, and itchy nose and throat. Easy to take on the go with or without water, the dye-free tablets are suitable for adults and children 6 years and older. To treat allergy symptoms, chew and swallow one tablet once daily, and do not take more than one tablet in a 24-hour period.