Set your Tivo to get one of the recent Mythbusters episodes! <img src="/images/graemlins/smile.gif" alt="" />

My wife has used the elastic band with a small plastic bead method before. It really helped during her pregnancy when she had an upset stomach. She had them from our flight to Australia. The did help some on that as well. The meds work better, but obviously with side effects.

As I recall the set of 2 bands were at the pharmacy for like $12. Just elastic with a marble sewn into them. I can anecdotally recommend based on her experiences.