Scopolamine
"This patch is absolutely wonderful I use it every time we go on a cruise and it completely eliminates the motion sickness. I have suffered with motion sickness most of my life driving in a car or anything with movement. This saved my entire trip every time I cruise I never leave home without it. The only side effect I have is extreme dry mouth but I just make sure that I keep myself hydrated while I'm 
vacationing on a cruise ship"