I sometimes see posts where folks share that it is "always really bad" when a glider vomits.
That is not true. Gliders have this protective mechanism that is afforded to most living things. It is a GOOD think that they can throw up. It will sometimes save their lives.
So, if your glider throws up once, it is not necessarily a terrible thing. Keep an eye on them. Observe WHAT they threw up and when. Be observant and discerning. Call me if you must.
If your glider throws up more than once, then it is time to get to the vet.