I wish I could give you good news...there isn't much to give unfortunately. He's going to get much sicker before he feels better.

There are a number of medications that will help him with the nausea; metaclop and zofran come to mind. Try to keep him eating and drinking; they won't let him go very long without nutrition or hydration, and he'll be on a gastric tube and IV.

His body is going to be fighting the treatment so hard he won't have much fight in reserve; Dehydration is a VERY real possibility. Moral support is incredibly important..be there for him because he needs you more now than ever before

Stay in touch, and when you need to vent ( and you will) we listen really well
Wayne