Niraparib, sold under the brand name Zejula, is an anti-cancer medication used for the treatment of epithelial ovarian, fallopian tube, or primary peritoneal cancer.[3][4] It is taken by mouth.[3][4] It is a PARP inhibitor.
The most common side effects include nausea (feeling sick), thrombocytopenia (low blood platelet counts), tiredness and weakness, anemia (low red blood cell counts), constipation, vomiting, abdominal (belly) pain, neutropenia (low levels of neutrophils, a type of white blood cell), insomnia (difficulty sleeping), headache, lack of appetite, diarrhea, dyspnea (difficulty breathing), hypertension (high blood pressure), back pain, dizziness, cough, joint pain, hot flushes and decrease in white blood cells.[4]