Help Don't know what to do.

Hello, I have a 2 year old "Rafeiro do Alentejo", weights around 38kg, its a portuguese Breed, Im from Portugal.

Last year he bit a cockroach poison tablet, he had seizure and got quite sick but made it through, got better but developed epilepsy, he started on a single pill a day of "Epityl 60mg" but every 3 months he has to increase the dosage, he is currently on four pills a day(2 at midday and 2 at midnight), its really time sensitive and I work 8h shifts.

It's getting really expensive and unsustainable, every time we go to the vet its an expensive bill, plus more medication every month...He just had 4 seizures today probably they Will do more exams and increase medication but I can no longer pay for it unfortunately.

I really love my dog and I would do anything but its getting hard having enough money to keep him...Keep having to using my credit card and my emergency money to pay for the vet bills.

I don't want to give him away because Im sure nobody Will treat him as good as I do, but I don't want him to keep suffering, Im really thinking of saying good bye but I really don't want to nor my mind could handle such loss...

Really don't know what do to...