Suz, it wiped me out after the first 3 or 4 treatments, then the last two were quite good, I thought. But I also went into the initial treatment with lots of fatigue, carried over from months before when that damn growth was developing. So please don't be alarmed...just get your rest as you need it. We are all in a holding pattern whilst we get through these treatments and fight this thing. I've had to adjust my own lifestyle a great deal, but what can one do?