I've used the Angelica Root and the White Peony. The Angelica Root was part of my Babesia treatments, and the White peony was and still is being used to help ease severe intestinal cramping (thanks Lyme!).
They really aren't that hard to find. They can both be found at
1stchineseherbs.com/, although I would encourage you to shop around to see if there is a better price.