just noticed the many threads about this terrible sickness.
I have had the experience myself and was given a set of
TRAVELBANDS...elsatic wristbands, totally DRUGFREE , containing NO magnets or chemicals....
and I tell you all, they did work.
It worked for me in 6' swells on a Windstar ship.
As far as i know , they do not have any distributors in the USA, but chech it for yourself on their web site
travelband.com. I checked with google and they come up.
can only recommend it to everyone.