I've never gotten sick on a coaster, but occassionally I feel it in the car or after traveling. My mother has vertigo, I can't think what the medicine she takes is, but Dramamine knocks her completely out. There is the patch, that goes on the wrists like a band or bracelet, and another patch that is for kids, it's pretty mild. I usually after about eleven hours in the car or something, start to feel sick, they sell an anti-naseau liquid at Wal-Mart that's nothing but sugar, it really fights the sickness, but it doesn't get rid of the dizzies.