The Niraparib mechanism of action (https://www.globanspharma.com/products/zejula-100mg-capsule) is by blocking specific proteins called PARP. These proteins repair single strands in your DNA to multiply. The cancer cells overproduce these proteins because they have damaged DNA. Therefore, blocking causes the accumulation of DNA inside the cells. It leads the cancer to go into programmed death and reduces progression. Patients should buy quality medicines from Globans Pharma.