Fighting cancer is not easy. Medicines used in the treatment of cancer, lowers the white blood cells. Filgrastim Injection is used for treating neutropenia, a condition caused by the presence of low white blood cells. When given by combining with cancer prevention medicines, it makes new white blood cells by strengthening the bone marrow. As it strengthens the bone marrow, Filgrastim Injection helps in recovering the bone marrow after bone marrow transplantation. Moreover, it also helps the patients to easily recover after being exposure to radiation.