I actually know someone who said he used it when he had noro and it helped the nausea a lot.
I have tried it recreationally once, and was really amazed how effective it was for anxiety. Better than any prescription medication I've been given, and I've taken a few!
It does have side effects, though. It was very hard to concentrate while on it, so it's not something I'd be able to use regularly as an anxiety medication and still function.