I have never heard of Relpax addiction before but I guess anything is possible. My wife quit coffee after 35 years and she was sick for 2 weeks so....
I kicked Relpax, Immitex, every migraine medicine prescribed. Topamax put me the hospital with pancreatitis. Only 2-4% of people get it and I was one. ER Doctor thought I was an alcoholic being so young with pancreatitis. I'm telling him I don't drink because of migraines and that's when he did his research on the meds I was taking.
I don't like preventative medicine due to side affects.