FMT using the briggs protocol has been discussed and tried many times here. As with all uc treatments, for some it works well and for others it doesn't help at all. The only way to know for sure is to try it, if you're so inclined.
Here's a long running thread talking about
it. Good luck,
www.healingwell.com/community/default.aspx?f=38&m=3066732&p=14www.healingwell.com/community/default.aspx?f=38&m=2758195