Loratadine (Lorarex) 10mg Antihistamine Tablets are used to relieve allergy symptoms such as runny nose, sneezing, itchy or watery eyes, and itching caused by hay fever, allergies, or other environmental factors. It works by blocking histamine, a substance in the body that causes allergic reactions. The tablets come in a pack of 100 and are typically taken once a day. They provide relief without causing drowsiness in most people, making them a popular choice for managing seasonal allergies or other allergic conditions.