Zyrtec Allergy Relief Medicine Tablets relieve your worst indoor and outdoor allergy symptoms. With 10 milligrams of the antihistamine cetirizine hydrochloride per tablet this prescription-strength allergy relief medicine provides 24 hours of relief from common symptoms of hay fever and other upper respiratory allergies including runny nose sneezing itchy watery eyes and itching of the nose or throat. From the #1 allergist-recommended brand among OTC oral antihistamines these all-day anti-allergy tablets effectively treat indoor allergies caused by dust mold and pet dander as well as outdoor seasonal allergies from tree pollen weeds and grasses. This 24 hour allergy relief medication starts working at hour 1 and works twice as hard when you take it again the next day. It is suitable for those ages 6 and older. Plus the individual travel pouches are great to take on the go for effective allergy relief anywhere.