Meds can be really person specific, so just because other people find them sedating doesn't mean you will. If they aren't intended to induce sleep, it is probably worth a try. Or how about taking them at dinner time before the nausea starts? That way if you are a little drowsy, you don't have to be out and about. And they will have a little time to move through your system if you would end up vomiting later.

Let us know how it goes!
EJ