LAI DUO FEI is Fexofenadine Hydrochloride Tablets, as the second generation H1-receptor antagonist, which can selectively block the H1 receptor and has good antihistamine effect, manufactured and marketed by Wansheng Pharmaceutical, which we acquired in July, 2015. LAI DUO FEI is regarded as first-line drugs for a new kind of allergic rhinitis and antihistamines, with faster working time, longer duration of drug action