Everything you’ve described mirror our dogs seizures. If he fits reassure, but keep your hands away from the mouth. When he comes round keep talking to him, he can hear but his eyesight will be blurred. Does he get right in your face? The more he comes round does he become hyperactive, pacing and whining?
Our eldest dog Dillon, a patterdale/whippet cross is epileptic. He’s currently on 90mg of Epiphen, the tablets are 30mg, he has 1 1/2 morning and evening. This keeps fits at bay for the moment, he’s had a few bad days here and there, mainly due to sickness which causes him to either refuse to eat or vomit, can be a struggle getting his meds in, the longer it goes on the more the levels in his blood drop, then the fits start.
Our vets are quite good, if he starts to eat grass, or vomits they give him an antiemetic and antibiotics to prevent things getting worse. We also have to be mindful of his diet, particularly anything with salt, it prevents the body absorbing the meds, thus causing fits.
The tablets are 5p, we pay £20 for 100 at a time, every 6 months he requires a blood test just to check his levels.