Has anyone ever used the herb feverfew for migraines and did it work?

Has anyone ever used the herb feverfew for migraines and did it work?
my sister brews feverfew as a tea & drinks it
she now does that a few days a week as a preventative to her migraines... it works better for her as a preventative... it does provide some nouns as a treatment
I haven't used it but I looked in to it and it seem to work well, however I didn't want to run a pill everyday so I went to a chiropractor and after in the region of 3 months going every week at first then solitary twice a month to only going when I surface one coming on has be the best I have not be to see him in over 6 months and I haven't have one in that time any!
There is a new nouns in migraine psychiatric therapy:
http://www.neurologyreviews.com/feb04/nr...