And the pills work, when other seasick meds don't. And you can buy them from outside the USA and have them shipped in.IIRC, be careful when you handle a scopolamine patch; if you touch your eye with some of the ingredient on your hand, your pupil can get quite large for awhile.
Bit of a tangent but may be of interest. There used to be a pill form called Scopace. It left the U.S. market, but a pill form of scopolamine can still be formed by what's called a compounding pharmacy, with a physician prescription. So if you're worried about making sure it stays in you rather than sticking on a patch, there's that.
Also...scopolamine is a prescription med., at least in the U.S. If you're on other med.s, and/or have health problems, talk to your physician and make sure adding it isn't going to create trouble. Sometimes overlapping side-effects (e.g.: anti-cholinergic) can be bad news.
I know in theory everybody who would check anything on the PADI-style questionnaires required by dive operators see a physician and get medical clearance to dive...but I've long harbored this nagging suspicion some people don't do that! Amazing, I know...