I've used one for mild sea-sickness on a cruise (haven't tried them for other types of nausea, since I rarely get those). It did seem to help in that case -- several other people in my family also had good results with them.
It may be worth a try -- you have to get it positioned in just the right spot on the wrist, but once you figure out where that is, it's pretty easy. If it helps, you've got a "solution" that doesn't involve one more drug in your system.
Cathy
Tongue SCC (T2M0N0), poorly differentiated, diagnosed 3/89, partial glossectomy and neck dissection 4/89, radiation from early June to late August 1989