There ARE good commercial dog foods on the market (and there are some very crappy commercial dog foods).  We feed our dogs Blue Buffalo.  www.bluebuff.com It's very important to know how to read the labels (ingredients, guaranteed analysis, etc).  Here's a good link for understanding ingredients ...

My dog, Jasper, has had four grand mal seizures.  They only happen in the car, so while our vet says it is epilepsy, I think it has something to do with excitement.  Our vet wants Jasper to take Phenobarbitol twice a day, but I really don't think that is necessary.  (His first seizure was 2 years ago, so it's not like this ...