We compared the Advantage box and individual container that I used on Chrissy to the ones the vet sells and they are identical. Our vet called Bayer company, who makes Advantage and reported the incident. They took a report on it, but said they have never had an incident of seizure.
The seizures started less than an hour after it was applied to her. Does that mean that it was the Advantage that caused it? Not certain, but it makes for a lot of suspicion.
They gave her a mega dose of anti inflamitory in the hopes that the seizures are being caused by some brain swelling. They also reduced her Phenob. down to 2 tenths of 1 cc. That small amount kept her from having a seizure for 4 hours and the vet was very optimistic about that. Praying for longer and longer time frames inbetween the seizures.