I have been taking Topamax for several years to control epilepsy....

Hello, I´ve been taking modiodal too, since I have narcolepsy and no problem, but last month I take a simple tablet of neurobion and have a very bad side effect, I felt like if I was going to faint, or as if I was going to fall asleep imediatly, I even fall down then I was so scared that started crying and ask my husband to take me to the bed, and obviously stop taking neurobion. I have had a similar reaction 5 months ago while I was taking modiodal and started with folic acid too, then I stop taking folic acid and continued with modiodal very well, my doctor is very concerned because she said that reacion to the folic acid an neurobion is not normal, can you tell me please what did your doctor tell you about your reaction to it?