Other Name: Rui Si Yi

• Rui Si Yi is Anastrozole Tablets,manufactured and marketed by Wansheng Pharmaceutical, which we acquired in July, 2015. Rui Si Yi is a potent nonsteroidal aromatase inhibitors,indicated for the treatment of advanced breast cancer in postmenopausal women with inefficacy after tamoxifen and other anti-estrogen therapy.Rui Si Yi is effective to increase the survival rate in patients as first-line drugs for breast cancer with good tolerance,Rui Si Yi is included in the National Medical Insurance Catalogue as a Category B drug.