I thought I had found the solution for my motion sickness in Bonine, without the drowsiness. Actually, it worked great for my first four Disney trips. Then I went on a RCCL cruise (Oasis of the Seas) with a friend and I could not stay awake! All I had to do was sit down and I would start nodding off. I took it in the evening, like many suggest, but I was sleepy all the time. I most definitely felt the ship moving all the time, but at least I wasn't motion sick. I thought it was just a fluke because it was a ship, instead of other moving things. Well, I felt the same way on my last Disney World trip. I think the difference was that I had quit caffeine a few months prior to my cruise. My guess is that all the other years, my level of drowsiness was counteracted by my caffeine consumption. I can't be certain, but that's my theory. Now that I don't drink caffeine anymore, I'm back to feeling drowsy. So, I don't know what I'll use in the future. At least at Disney World I'm not driving (Magical Express and buses), so I'm not in any unsafe situations.