My cat, Moonpi developed seizures at 6 months old, severe scary seizures which required hospitalization. Since then, 6 years now, she has been on phenobarbitol twice a day, mixed in the gravy with pouch-packaged food.
She has stayed small because of the drug, just 8 pounds of fury, but othewise has adjusted fine. Once a year, she gets extensive blood work done to test her drug levels and make sure all is well. That visit runs about $300, so it is timed to use my income tax refund. Her vets have told me that her lifespan may be shortened because of it, but she is healthy as a horse otherwise.
it has been more of an adjustment for me, keeping my schedule so she can have her meds on time.