bitter brush

for years i have been wondering, what are the medicinal uses of bitter brush?  also known as antelope brush, or Purshia tridentata, that grows all over eastern oregon, wahington, montana, idaho, etc.  anybody know? 

Traditionally, bitterbrush had many medicinal uses among Native Americans. An infusion of the root was taken for lung problems and coughs. In Montana the dry, ripe fruits were used as an emetic. Some tribes chewed the leaves to bring good luck during hunting. The Shoshone, Sacagawea's people, used bitterbrush as a poultice for skin problems, as a general tonic, and as a cure for gonorrhea. Others used the outer seed coat to produce a purple dye used to stain items made of wood and the Navajo made arrows from bitterbrush wood.-montana state gov't website

anyone have any expeinces to share about using this herb, sucessfully or no?