I’ve got a 12 year old dog who, for no apparant reason on Sat., could not stand up. His eyes were also rolling around in his head. The vet has told me he has ‘dizzy dog’ syndrome or vertigo and that it will last for a few days up to a few weeks, but that it is not life threatening. I’ve never heard of vertigo in a dog. What homeopathic remedies might I consider?