I guess I've been pretty fortunate that I just don't get nauseous very easily. In the almost 47 years I've been flying, I've had a slight case of the greens twice, once after a series of 8s on pylons and once after a series of aerobatic maneuvers. In neither case did I hurl--just leveling the wings and flying straight and level took care of it.
But when I was instructing, I had one particularly sensitive student, a man in his 50s, who regularly puked during each lesson with his previous instructor. That instructor had had enough, and palmed Jack off on me. We quickly hit it off as friends, but he had a serious nausea problem. So we shortened his lessons to maximum 20 minutes for awhile. Then we started extending them, and pretty soon they were a typical 45-50 minutes long. But every time I'd introduce something new, he'd get pukey again, although I always made a point in our prep talk to make sure he knew what we were going to do--no surprises.
The first day I had him put the hood on was his last bout with nausea. He put on the hood, had it on for about 30 seconds, and suddenly yanked off the hood, pushed the seat back and said he was going to hurl. I yelled at him, told him he hadn't thrown up in the last 30 hours, and by God, he wasn't going to now--or he was going to clean this airplane and every other airplane on the line. I think he was surprised at my tone--I tended to be pretty gentle with students, but I was anything but gentle then. Well, he didn't hurl, we didn't end the lesson then, and suddenly he took the hood, put it back on, and we flew on. He never had a bout of nausea again, went on to be a fine pilot, and we remained good friends.
Just incidentally, he turned out to be a truly excellent navigator, too. On one occasion, I had him under the hood flying in the plains area some 20-25 miles east of Cheyenne where there aren't a lot of visible markers, giving him vectors here and there, when I told him to take off the hood, handed him the sectional, and said, "find where we are". Within only a few moments, about 3/4 of a wide circle, he had found our location.
Jack died about 3 years ago, and I miss him. He was a good man.
That was the old school way, though. Today, I'd suggest the electronic wrist band. My SO has a very tender tummy, and before we rented a trawler in the Northwest one year, I bought one for her--and it made all the difference. We got into some pretty rough water, and she never had a problem. It has several levels of jolts, and she did have to turn it up a couple of times, but that was all. And unlike most every anti-nausea medicine, it's accepted by the FAA. Several catalog companies have them, but I got mine from Aeromedix in Jackson, WY.
Cary