It is used to treat urticaria acuta, urticaria chronica, eczema. It has effects of anti-inflammatory and relieving itch. Also, it shows clinical effect to psoriasis. The mechanism of action is that through inhibiting the release of allergic media promotes epidermopoiesis. It is characterized by small side effects, no drowsiness, low recurrence rate, and so on.

    It improves the dilemma that skin disease market in China owns many drugs for exterior use, but a few for oral administration. It has value of being popularized. Oral administration in skin disease market ranks No. 5.