Swear to Bob these work!
Went on a rollicking 83 foot liveaboard in the Galapagos a few weeks ago.  I normally get motion sickness on mountain roads, even when I am driving.  I cannot read in vehicles.  I was absolutely stunned that I did not get sick on this vacation. One night we had at least 10 foot swells, everything was rolling and falling in our room, you could not safely get to the restroom. Other guests were sick, but not me. I 110% endorse this product.  I have not idea if the effect is placebo or not, and I don't care.  It is worth a try.
Rating: 5 stars