Echoing what behappy said, I did try it years ago but was not in the right frame of mind for anything to "work." If it didn't magically get rid of all the cravings, then I'd immediately declare it a failure and go drink again, because that was the plan to begin with.
I hope it does work for you. I've read that it's been used for centuries in China as a way to cure for hangovers and to diminish cravings for alcohol.