Ebastine tablets are antihistamines H1 receptor antagonists. It is able to counteract the effects produced by histamine, such as symptoms of capillary dilation, increased permeability of blood vessel walls, smooth muscle contraction, and increased glandular secretion. It is rapidly absorbed orally, does not pass the brain barrier, has a weak inhibitory effect on the central nervous system, has few side effects, and is widely used in clinical practice. It is mainly used for the treatment of allergic diseases, such as allergic dermatitis, acute and chronic urticaria, drug rash, solar dermatitis, allergic rhinitis, allergic conjunctivitis, etc. It is also used for itchy skin caused by non-allergic diseases, such as psoriasis vulgaris, pityriasis rosea, neurodermatitis, seborrheic dermatitis, etc. Side effects such as dry mouth, headache and drowsiness can occur in some patients, and should be prohibited for those who are allergic to this product.