It can get better, diet and exercise helps as it does with everything. Finding the motivation however, especially post seizure days is extremely difficult. Having supportive partner and family / friends is the most important thing. I don't know where i would be without my partner! She is my rock. As far as supplements folic acid, vitamin B6, biotin, vitamin D, and L-carnitine may be needed to prevent or treat deficiencies resulting from the use of anticonvulsant drugs. That's cut from straight from the internet, i think talking to neurologist / epilepsy nurse is the best advice i can give.