I was diagnosed with prostate cancer about five years ago. Took 44 radiation treatments and everything was fine until six months ago when an MRI revealed I had a spot on my spine and one on a rib. I am now taking aberaterone + prednisone. About once daily I have a "sinking spell" - I become extremely tired and sleepy. This lasts from 1 to 3 hours. Anyone have any experience and good advice as how to overcome this?

I was on Prednisone when diagnosed with ulcerative colitis and from what I remember, one of the side effects was insomnia. That it could act somewhat like a stimulant even though it isn't classified as one. So I was told to take it in the morning. Could it be that you are experiencing the effects of the drug wearing off and kinda "crashing"? I have no experience with aberaterone. I would ask your doctors about this for sure.