Hey there! I no longer take Topamax because its effectivness wore off. I did take it for many years though and it helped me so much. It cut down the frequency of migraines tremendously. I was up to 200mg daily and because I had problems sleeping, my dr told me to take my entire dose at night so it would help me sleep and I did it that way for a couple of years.

I think the "normal" dosaging is to take part in the am and the other in the pm.