I was on topomax a few years ago. I didn't notice any weight loss, but I did notice that any soda tasted flat and tasteless. I drank large amounts of Mountain Dew prior to taking topomax, and after the topomax I couldn't drink any soda at all. I'm sure that saved me quite a few calories.

On other forums that I read, I've seen topomax nicknamed "dopomax" because it can cause cognitive difficulties in some people. I noticed that my brain seemed to be a bit slow on it.

On another note, I did not have one migraine headache or any other headache while on topomax. That was really a nice side effect.

Good luck,
Jan