I have been on topamax (topiramate) for several years now, recently increased dose to 75mg twice daily for Migraine preventative. Over time I have had several different more common side effects early on come and go, funny taste of soda, muscle spasms, weight loss etc. Most recently it's been more numbness, more often my left foot, sometimes my hands fingers. I also just wonder is this a Migraine aura or symptom. I tend to learn something new about Migraine everyday. Like finding out I was having phantom smells at work and I wasn't really crazy like all my co-workers and boss thought.