Reactine Regular Strength Antihistamine Tablets provide fast, long-lasting relief from indoor and outdoor allergy symptoms. Each dose contains 5 milligrams of cetirizine hydrochloride for allergy relief that that provides fast relief and lasts 24 hours. Fast, 24 hour relief of sneezing; stuffiness; itchy, watery eyes; hives; runny nose; itchy nose and throat; nasal congestion; and allergic skin reactions. Adults and children 12 years of age and over should take one or two tablets every 24 hours, anytime of day. Adults 65 years of age and over should take one tablet daily or consult a doctor. This package contains 36 tablets.