Sometimes it takes months for a dog to stabilize on medication, however, you could ask your vet about doing a slow taper….. Discuss your observations, you may even be able to leave a message for your vet to call you back when he has a minute and get his opinion.
I must warn you though, as your vet will, the seizures may return. If that happens it may take months to stabilize him on medication, again.
Pexion is a very good medication (minimal to no side effects) to treat epileptic dogs. You are fortunate to have found something that works. Seizures are a neurological disorder, a firestorm in the brain. I would keep in mind that your dog is elderly, comfort is a priority.
Everytime I tried to taper my dog off of phenobarb, the seizures returned, so he remained on a low dose for the rest of his life, with no side effects.
