I just did a google search and found the relpax website: http://www.relpax.com it's quite a good website.
I'll have to ask my doctors if we can get it over here next time I go. I currently have Imigran (Imitrex) to take when I get a migraine.
I've been taking co-enzyme Q10 which seems to help enormously as I don't seem to be getting as many migraines since I started taking it.
I read a fantastic book about migraines which has helped me greatly: VIEW IMAGE
Definitely worth reading!
Do you use any preventative treatments/medications?