Will Falconer, DVM Moderator
Hi Linda,
I'm sorry to hear your lab is having seizures. That's deep seated, serious illness (vs. itchy skin, like the dog I just had in my last appointment).
It's possible Trifexis had a role in this, sure. If you read the reports, convulsions are a common side effect. We'll also see this in relation to vaccinations, however. So, it could be either or both. Needless to say, more (though different) pesticides and future vaccines are not in this guy's best interest. I'd avoid them like the plague, for the rest of his life. He's now got an automatic waiver, anyway: he's seriously ill. (Search on that word and vaccinations in this site for more understanding of why I say these things).
Blood tests are normal, 99% of the time, so no news there.
Phenobarbital cannot cure this. It just "dumbs down" the nervous system. If you are after a cure, I know of nothing better than professionally prescribed homeopathy to get him there.
See my Resources page for the AVH list, and see who might help you with that. Look for a vet who does mostly or only homeopathy, and don't worry if you need to work by telephone with someone to get the job done.
Best of health to you all. I hope this will be a springboard for change for you and your animals going forward.