Have been taking 300 Mg of Dilantin daily for a number of years for a Gran Mal Seizure. Until recently no problems, then in the last week, my wife said she was talking to me and I did not answer and just stared off. About the same time was having lunch with a friend and he noticed me staring off and then getting up and ordering another meal and drink, none of which I remember. Only after my wife mentioned the first episode did he relate to his wife about the lunch issue. Any ideas? I plan to see my Dr. this week.