Thank you everyone for your helpful descriptions of your experiences. I started out on 25 mg of topomax, have gone up to 100, but now have tapered down to 50 mg. I have been taking it as a mood stabilizer, and an anti-depressant booster. However, once I started lithium I found that I didn't need the topamax as much. A friend of mine who started the topamax for pain had to stop it though. It made her suicidally depressed on a much lower dose (around 50 I think).
Meds are so weird .....