Tinkturenpresse

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Frangula purshiana (DC.) A. Gray - syn.Rhamnus purshianus DC.; Rhamnus purshiana (DC.) Cooper - Rhamnaceae
cascara buckthorn, cascara sagrada, Amerikanischer Faulbaum, Cascara

Tree up to 10m high, native to western North America.

„The dried bark of cascara has been used for centuries as an herbal laxative – first by Native Americans in the Pacific Northwest, and then later by European/U.S. colonizers.“ https://en.wikipedia.org/wiki/Rhamnus_purshiana

„Parts used: Dried trunk and stem bark (Rhamni purshiani cortex). Fresh bark tends to cause nausea and griping, so it is stored for one year (or artificially aged) before use. Therapeutic category: Stimulant laxative. Active ingredients: The dry bark contains 6-9% hydroxyanthraquinone glycosides, the bulk of which is made up of O-glycosides of aloeemodin, chrysophanol and emodin or C-glycosides, so-called cascarosides A,B,C, and D; also aloin A,B.“
[Medicinal Plants of the World. Ben-Erik Van Wyk and Michael Wink, Pretoria 2004, 269]