What Loratadine Tablets are and what they used for Loratadine belongs to the class of medicines called antihistamines. It works by blocking a substance in the body called histamine. This helps to decrease allergy symptoms. Loratadine Tablets are used: • To relieve symptoms associated with allergic rhinitis (hay fever, allergy to dust mites etc.) such as sneezing, runny or itchy nose and itchy, red teary eyes with burning or itching. You may be suffering from these symptoms all year round or only for some part of the year. • To relieve the swollen, red, itchy patches of skin caused by prolonged episodes of skin rashes or hives (chronic idiopathic urticaria).