Gently boil pieces of dried root in water for about fifteen minutes, then let steep off the heat. This traditional preparation, very bitter, was consumed in small amounts. Dosage should be validated with a healthcare professional or recognized pharmacopoeia before use.
The root and stem, finely cut, were macerated in alcohol for several weeks to extract the bitter principles. The filtered liquid was used internally at low doses, or externally in diluted applications. Dosage should be validated with a healthcare professional or recognized pharmacopoeia before use.
A concentrated decoction of stem, cooled, was applied as a compress to irritated skin areas, according to traditional uses of the peoples of the American West. Dosage should be validated with a healthcare professional or recognized pharmacopoeia before use.
Berberis repens is found growing wild in the dry, rocky undergrowth of the mountains of western North America; it is also available, in the form of dried root or tincture, from certain specialized herbalists.
The root is traditionally harvested in autumn, once the sap has descended, while the stem can be gathered year-round from well-established specimens.