[anonymous]

Okay, I watched the video. That is not nausea. It appears to be neurological, and the dog is suffering during these episodes.
I would start the anticonvulsants recommended by the treating vet, tonight, ASAP.
It takes a while for them to kick in. It does not dope them up, they are not sedated. It does not change their personality.
Stop trying to find good veterinary medical advice on the internet, it’s not going to happen.
The dog needs REAL medication not phony baloney stuff.
Give us an update after he starts his meds, he looks like he is in good shape otherwise.
Medications are not a bad thing, they were invented for a reason.