I bought a flea shampoo from the vet and on the next day my cat had a seizure. I took him to the vet. I was told that it was impossible that he was poison from the shampoo that it was just a coincidence. A week later he had another seizure, I thought it was the shampoo so I gave him a bath with a regular cat shampoo. I was almost certain it was the shampoo. So two weeks later they did a blood test and I was told that everything was fine. They didnâ€[emoji]8482[/emoji]t know what was happening. He is taking Phenobarbital. I still think it was the shampoo. Do cats get seizures from poisoning?