Erleada is a androgen receptor inhibitor and it is very expensive and is sometimes given after other treatments have slowed down. My reading is that it helps for about 41 months on average This is really a question that you need to discus with your medical team I was on it for 13 months and waiting for a blood test and a pet scan to see the results but I am only 20 months into the 51 month average Good luck to us