It is used often for post operative nausea.
The side effect of dry mouth makes sense when you realize it is also frequently used in Hospice patients for excessive oral secretions, also in the throat (AKA "death rattle")
About the Bermuda/Atlantic ocean cruise mentioned above, I have been on many Bermuda cruises and every one had at least one way that was horrible rough seas, either there or back, almost never both. The only good thing about those if someone does get sick you are in Bermuda for 3 days or so, so at least you are still and can enjoy that part of the vacation. Although if the rough sea was on the way there, you might not want to get back on the ship to go back home, LOL.
There is of course no guarantee that you will always have calm sea on any body of water but I will say that we just went on a Med Cruise in October and it was the calmest water I have ever seen since I started cruising 30+ years ago. I never felt any movement. Even looking out at the horizon comparing it to the railings, completely even/flat.