Antiallergic medicines can temporarily reduce hay fever (allergy to pollen, dust, or other airborne chemicals) and the allergy symptoms that go along with it. Sneezing, runny nose, itchy, red, watery eyes, and scratchy throat are also good uses for these. To treat allergy symptoms like runny nose, watery eyes, itchy eyes and nose, sneezing, hives, and itching, an antihistamine called cetirizine is administered. Sneezing, itching, watery eyes, and runny nose are just a few of the cold and allergy symptoms that antiallergic medicines are used to treat in both adults and children. These drugs can be used to treat hives in adults and kids that are at least 6 months old.