My epilepsy has gotten steadily worse over the years. At first it was only partial seizures and the occasional absence seizure. I never bothered to address it. Even after the first few tonic-clonic seizures I stubbornly refused to seek medical advice. It was when they started coming 3-4 times a month that I first saw a neurologist. He told me that not addressing it sooner likely contributed to how bad it had gotten so fast (he said that some seizures have the potential to cause some damage which could aggravate the condition further).
I have been on medication for a while now, and have been increasing dosage and adding additional anti-convulsants along the way, as it continues to worsen. The side effects are brutal, though. I don't think any of it is time release, and especially shortly after the first dose of the day I have trouble with fuzzy thinking, difficulty with word retrieval, and sometimes have trouble moving one side of my body. They also seem to dull my emotions significantly whenever the dosage goes up.
My current neuro team wants to crack open my head and chop out some bits (as well as have me stop working and go on disability). It seems my body becomes more and more effective at removing the medications from my system. The last round of seizures (multiple seizures every day) were particularly rough, and I ended up using up all my sick time and most of my vacation time. The medication cocktail after that round left me pretty worthless when it comes to written or verbal communication and coherent thinking. The cocktail has been adjusted (thankfully) to something much more tolerable.
I guess what I am saying is you should try to get them to seek medical advice and to follow it. Being completely honest is essential, as the medications all work slightly differently in different dosages and carry different severities of different side effects. For mild epilepsy, the medication they would likely be precribed would have very limited side effects.
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"The surest way to corrupt a youth is to instruct him to hold in higher esteem those who think alike than those who think differently" -Nietzsche