This study will investigate a Chinese Patent Medicine Yangzheng Xiaoji Capsule improve the adverse reaction nausea of Niraparib in the first-line maintenance treatment in advanced EOC, who have previously received ≥ 3 cycles of prior combined bevacizumab chemotherapy and a complete or partial response with platinum-based chemotherapy.~Approximately 50 eligible subjects are planned to be enrolled, given Yangzheng Xiaoji Capsule and niraparib maintenance treatment.~The dosing regimen is:Niraparib 200mg QD combined with Yangzheng Xiaoji Capsule 0.36g*4 tid，28 days/cycle. Subjects will receive Niraparib plus Yangzheng Xiaoji Capsule up to 3 cycles.
This study is an open-label, single-Arm， phase II clinical trial of a Chinese Patent Medicine Yangzheng Xiaoji Capsule to improve the adverse reaction nausea of Niraparib in the first-line maintenance treatment in advanced epithelial ovarian cancer, fallopian tube cancer, and primary peritoneal cancer.