Niraparib tosylate capsule, is recommended to be taken before bedtime to reduce the incidence of adverse reactions such as nausea. Niraparib tosylate capsule, is used for the treatment of recurrent ovarian epithelial carcinoma, fallopian tube tumor, and primary peritoneal carcinoma for which platinum-based chemotherapy is effective. It can be taken on an empty stomach or with a meal, and is recommended to be taken before bedtime to minimize the occurrence of adverse reactions such as nausea. Common adverse reactions include myelosuppression, cardiotoxicity, thrombocytopenia, anemia, neutropenia, leukopenia, palpitations, nausea, constipation, vomiting, abdominal pain, oral mucositis, diarrhea, dyspepsia, dry mouth, fatigue, decreased appetite, urinary tract infections, hepatic damage, and back pain. Pregnant women, lactating women, children are prohibited from using it, and it should be used with caution for those with liver or kidney insufficiency. Patients should take this medicine under the guidance of a doctor. Pay attention to rest and strengthen nutrition during the use of the drug. Do not use without authorization.