Compare to Zyrtec Tablets active ingredient. Don’t let allergy symptoms slow you down. Treat your indoor and outdoor allergies with GoodSense 24 Hour Allergy Relief. Each dose contains 10 mg of Cetirizine Hydrochloride, a powerful antihistamine that relieves itchy, watery eyes; sneezing; itchy nose or throat and runny nose. In full prescription strength, just one tablet provides all day allergy relief. When used as directed by adults and children 6 years and over, this allergy medicine relieves symptoms due to hay fever or other upper respiratory allergies for a full 24 hours. Tablets are safety- sealed. This product is gluten free.