I usually take a 25 mg tablet of Meclizine HCl to prevent motion sickness, not least because the package label claims this is the 'less drowsy formula' and is 'pharmacist recommended' but as I grow older I'm finding that it is making me noticeably drowsier than I used to get in years past.
And when I combine it with a tasty alcoholic beverage it becomes a bad idea to drive or even engage in a twisty discussion.
What is working for you in the way of motion sickness medication?
Ideally there would be something that would last all day, for long flights for example, and something else that would be good for a few hours that would get me over the mountains and to my next lodging, or across the water to the ferry dock.