IIRC Zophran is an anti-emetic. That is, designed to stop the puking, which is a significant part of motion sickness but not enough to make a sick person "functional" again in all cases. I haven't heard of it being used by any government agency for the purpose, but then again, I haven't spoken to the Surgeon General lately.(G)
For glaucoma, scop would be contraindicated. I think the only safe way to even consider it, would be to see your opthamologist first thing in the morning, then take the drug, and have them literally check your eye pressure every couple of hours. And that's still problematic, since you can't "un-dose" after you've taken it, so they'd simply have to give you a med to lower eye pressure if they saw an adverse reaction. IOW, not a really great idea.
The electric relief band has NO complications like that. Can be turned off instantly.
https://smile.amazon.com/Reliefband...ons&ref=sr_1_1_sspa&psc=1&smid=A2KAOL6SMEUIZT
On Amazon it is about $100 now, $175 for a USB-rechargeable model that is more waterproof. And there is another company (Emeterm) apparently selling what they claim to be similar device, USB rechargeable, at the same $100 price as the older Reliefband. Isn't cheap, no. Unless you compare it to five or ten years of buying prescription meds, and all the fun side effects. Mine is on the shot list of "Gear you'll have to pry out of my cold dead hands if you want it."
OK, it isn't as convenient as "just pop a pill". And it needs to be left on the boat, dry-ish. But, no side-effects and an on-off switch sort of balance all that out.(G)