Honey I am sorry to hear this. I am afraid except for medication, I do not know much how to control them. Hopefully the vet can do something. I know you already know this, but make sure the dog is in a place they can not hurt themselves- like getting caught under a chair or chair leg or coffee table. Maybe keeping him in the kitchen is a good idea. ( without the chairs). I also would not leave any chew toys so the dog cant choke if one occured. Keep us posted.