You're in a tough situation: three active youngsters and a hyperactive dog with epilepsy. A couple more thoughts -epi dogs are always very hungry. Seizures require a lot of energy. Even if not seizing, the seizure meds make them hungry. Try adding bulk to the regular diet. Low sodium string beans is a classic. Next, see if any calming meds can be used with seizure meds. Plenty of dogs are on fluoxetine for behavioral issues because in reality, they are anxious and they act out by being loud and obnoxious. We have one now who was that way; she's now on fluoxetine and is a totally different dog. See your vet about this.
Thanks. We did add the green beans, and it seemed to calm her hunger for a little.
Just doing a quick search on fluoxetine, I found that it shouldn’t be used on dogs with a history of seizures, which is probably why one of the vets we use said she couldn’t really prescribe anything for the behavior issues. Also, she is already on phenobarbital for the seizures and needs liver checks periodically because of that. Fluoxetine requires the same checks, so I am guessing that the two combined could damage the liver.