Snoopy is taking phenabarbital and potassium bromide for his seizures. He is just a very friendly dog although a little (?) on the hyper side. He has taken the phenabarbital for about a year and a half. But no he has not shown any signs of aggression to any dog or person.


The only thing I can tell you is that medicines react different in different people. I suppose it is possible that it could cause some dogs to get aggressive. But I doubt if it would be used as much as it is if it did it to all or even most dogs.