@kanedenmk
Here is a list of Comprehensive Epilepsy Centers.
https://www.naec-epilepsy.org/about-epilepsy-centers/find-an-epilepsy-center/all-epilepsy-center-locations/
Take care,
Jake

@kanedenmk - Epilepsy Centers are usually connected with a hospital's Department of Neurology. I cannot name any specific ones, but I know children and adults have gone to one. Epilepsy unfortunately is fairly common. I don't believe that vitamins alone will treat seizures.
It is hard to guess what what the clinic found out about your granddaughter's health.