I see the coffee mug in your picture. When they warn you about caffeine believe them. I had the 5 treatments at Mayo Phoenix and after the first I had my mug waiting for me in the car for the drive home. Got home and did my second mug in my Mr. Coffee with no problem. Second treatment on Wednesday, same routine till about an hour after that second mug and my bladder said, "you dummy you should have listened". Had to pee every fifteen minutes weather there was a full bladder or just a few dribbles. Say goodbye to the coffee for a while till after your radiation treatments are over.