I haven't but there's a medications glossary within the U.S. Ep.
Foundation website  http://efa.org  if you haven't seen what is in the
'dictionary' at that site.   Often they list potential side effects,
things to avoid (usually alcohol, but sometimes other things specific
to a medication), and might show how long it's been in use.
   I've seen people post here back to 1997 from time to time.  A
Google on this group with subject line or content containing 'Topamax'
should bring up posts done here over last eg. 3 years.  (Older posts
might not reflect the current formulation in use if changes have been
made to the drug content, for example. )
  Your local Pharmacist too might know of other online sites, if
there's nothing listed on any printout you got with a
prescription.     G./