Clarityn Allergy & Hayfever Relief 10 Tablets – Loratadine 10mg. Clarityn Allergy Tablets are antihistamine tablets designed to help relieve allergy and hayfever symptoms. Each tablet contains Loratadine 10mg and can help with symptoms such as sneezing, runny nose, itchy or watery eyes, itchy nose or throat, and hives/urticaria when used as directed.