Laurie - My husband had an ongoing problem with hiccups during treatment as well. It was very frustrating. They prescribed Thorazine to help with that, but it only seemed to help for an hour or so. He also battled nausea and took the exact same drugs you mention. After trying to come up with solutions and different drugs and different patterns of doing things, we just kind of concluded that in addition to the obvious things, build up of phlegm in his stomach was contributing significantly to the nausea. Wish I could offer a better suggestion but, as you say, just tell him to hang in there and try to deal with the symptoms hour by hour. He will get through it.
Michele