Well things are a little better. Taking the Zofran 3 x a day, as well as trying to not have an empty stomach seems to reduce the nausea. As a back up, Eric got a compazine prescription in case it works better for him than the Zofran.
Three more treatments and another week down. He is starting to get tired and subdued... fortunately all the medical staff seem very proactive about minimizing effects. In fact his radiation nurse only works with head and neck cancer patients. She has lots of suggestions... and went through radiation therapy herself. All your suggestions, along with her suggestions really help.
I'll keep posting and thanks again for all the tips. Basically anything that isn't harmful seem worth trying!
Jack