Hello loopy, yes i have menieres and understand how bad you are feeling now. There are other conversations on thus site about this debilitating disease, so i wont go into it all again, other than i was prescribed betahistine which has given me 4 years of peace. It helped a friend too. In the meantime there is an injection which stops the awful vertigo, very quickly, as well as the buccastem which you put under the gum.
If you are dizzy keep your eyes focused on one spot in front of you and a bowl nearby. I still have an old ice cream tub in my wardrobe and car, just in case. Even after 4 years!