There are varying degrees of epilepsy - and different types. Most can be controlled, if not entirely rid of seizures, with medication. Try to aviod the over-doping ones (unfortuately these are often used by vets) such a phenobarbital, and try newer drugs, according to your vet's advice. Ask to see a vet who specialises in this area.
I have an intimate knowledge of the subject: I'm epileptic myself, since childhood; my mother's poodle also had the condition, and I was horrified by the medication used - out of the dark ages!
Haven't followed the thread on the hovel, must have a closer look.
With a cat, as with people, just ensure it's in a safe place when unconscious, and let it come round of it's own will. It may be tired or disorientated for a short time - just keep a close eye on puss.
Just took a peek at the Hovel thread. Epiphan, which most are taking, is a veterinary form of phenobarbitone, in my opinion, not to be recommended. It only works for certain forms of epilepsy and is VERY soporific. Many new meds were developed in the 90's; even some older meds like carbamazapine are better.
Go to vet well armed with some info from internet.