Ways to reduce appetite and nausea symptoms during withdrawal?

Hey all. I use medically and have an extremely high tolerance as a result. I have to travel a couple of times a year for work and always withdrawal during this process.

I don’t mind going off for these periods but I haven’t found many useful tools to manage my lack of appetite and nausea. It’s worst during the first 72 hours but my appetite never fully comes back due to my health issues. My doctor prescribes me Zofran for these trips but this just moves the pain from my stomach to digestive track.

If anyone has found anything from a medicine to a natural remedy that helps with either of these symptoms, I’d greatly appreciate it.