Ebastine is an anti-allergic drug with rapid and long-lasting anti-allergic effects, mainly on histamine receptors that are closely related to the occurrence of allergic reactions, and it is a potent, long-acting and very selective anti-allergic drug. Because of its high selectivity, it has no or little effect on the central nervous system and rarely causes sleepiness and drowsiness. The main clinical indication of the drug is anti-allergic and can be used for skin allergies such as urticaria, eczema, dermatitis and pruritus. It can also be used for allergies of respiratory diseases, such as allergic rhinitis. Since the drug rarely causes reactions in the central nervous system, the adverse reactions are relatively mild, but there are still common adverse reactions, such as headache, dry mouth and drowsiness, etc. Overall the drug is relatively safe.