Clarityn Allergy Tablets help provide up to 24-hour relief from hayfever and other allergy symptoms caused by over 150 airborne allergens such as animal dander, pollen, dust & mould. Effective relief from symptoms like runny nose, sneezing, itchy or watery eyes and an itchy throat or nose. Clarityn may also be used to help relieve symptoms of urticaria (itching and redness) which is often know as hives or nettle rash.