Probably the reason that you're not having any seizures is because the dilantin is controlling them.
It's like an insurance policy. Chances are if you weren't on dilantin, you would have a full out gran mal seizure ~ possibly while driving and lose your drivers lisence.
It's definately a trade off, either suffer the inconvenience and side effects of the dilantin but be seizure free or take the risk of not taking your medication and possibly have a seizure and risk your safety or that of others.
IMO ~ If you can tolerate the dilantin, why take the risk. (if it's not broke, don't fix it)
Like Jenn said, if you do decide to go off the dilantin, please consult your Doctor.
Re: liver damage from long term use ~ I speak from 27 yrs. of dilantin use and have my blood and liver enzymes checked and have had no probs.
Diagnosed with epilepsy and ulcerative colitis in 1979,