For most people with epilepsy, as for the general population, a healthy, balanced diet is best. The ketogenic diet is a high fat, low protein diet designed to treat children with very severe epilepsy, such as those with Lennox Gastaut Syndrome. Due to the high fat content it is quite unpalatable and difficult to maintain. It is therefore only followed in consultation with a dietician and with the knowledge of the patient's doctor. The diet may help to control seizures in some children but its success has been found to be limited and usually short-lived.
Some branches of medicine support the use of nutritional supplements in the treatment of disease.
There is a specific type of epilepsy which responds to vitamin B6 in childhood and infancy, but this is rare and does not occur in adults. Unnecessary and excessive vitamin and mineral supplementation may actually be harmful. It is worth treating with caution any therapist who tells you to reduce or stop taking your medication. Anti-epileptic medication should not be withdrawn without prior consultation with your GP or neurologist.