I don't know. I do know that before the meds were available, doctors prescribed a ketogenic diet. When meds became available the diet fell out of favor. When a child failed on medication, the next recommendation was surgery. In the mid-90's the ketogenic diet made a resurgence for medication-resistant epilepsy. If a kid fails on 2 or 3 meds, s/he may try the diet. Personally I'd try the diet before the meds - but I hate medications and think they should be avoided where possible. The true ketogenic diet needs a dietician to monitor and starts with a hospital stay, so your doctor would have to be on board. But some parents are finding their children respond to the modified Atkins diet which can be done without medical assistance.