My son who is 11 had the VNS put in last year. He has a small scare on his neck and where they put the VNS .
They have you come back and check to make sure the Healing is going well and they will turn it on and start at a low dose after about 2 weeks or so, and they have upped my son like 5 or 6 times since them . They say the longer you have it in the more some people have notice that the Seizures have lessen.
I would be more worried about doing the one that they go into the brain.
Do you take any Vitamins ?
Look into the new implant they have coming out before doing this one. If this is the implant that goes in your chest then I would highly recomened u looking into this one. My son is 18 and has seizures and we choose not to do the vns but am looking into the new implant not sure what its called but its kinda like a pace maker for your brain. works the same way. But is implanted near the area were your brain has damage. Good luck.