I'm on Firmagon once a month and Erleada 240 MG daily. After a year and a half I an exhausted for a few days after the Firmagon shot but I can't comment on Erleada since I am only on it afew weeks. So far OK though. I have half the muscle strength since starting on Firmagon with corresponding loss of energy. However, I invested in a NuStep 5 at home and the daily workouts really help!