Chocolate Trigger

Kia ora,
Our wee son, Billy, has had pretty good control on Epilim.  He is up to 480mg/day now, taken morning and night.  His sz have reduced in length from up to 14 minutes down to around 2 minutes and seem to been happening every fortngiht (on saturday mornings..strange).  Chocolate has been suggested by a naturopath as a possible trigger and he has eaten chocolate cake the day before the last few sz.  Has anyone got any ideas/experience on this? 
Thanks,
Jo.

is caffien atrigger for seizures... Although I havent had a seizure for a number of years, i am a self confessed caffeine junky.