.with neulasta onpro? strong chemo can put you at risk of serious infection, which could lead to hospitalizations. in a key study, neulasta reduced the risk of infection from 17% to 1%. .a 94% decrease. applied the day of chemo, m ore o n t h e so you can stay home. neulasta is for certain cancer patients receiving strong chemotherapy. do not take neulasta if you re allergic to neulasta or neupogen (filgrastim). ruptured spleen, sometimes fatal as well as serious lung problems, allergic reactions, kidney injuries, and capillary leak syndrome have occurred. report abdominal or shoulder tip pain, h ir e by th e t r to your doctor right away. s u mp a dm in i s t ra ti on the most common side effect is bone and muscle ache. administration. r be home, ask your doctor about neta onpro.