Oregon Grape
(Mahonia aquifolium [=Berberis aquifolium]; M. spp.)
Also know as Oregon grapeholly
Botanical Information
A perennial native plant of the barberry family with stiff prickly leaves, clusters of yellow flowers, and sour bright blue berries.
Working with Oregon Grape
Part(s) Used
Root
Herb Forms
Tincture, capsule, bulk herb, powder
The roots and lower stems of Oregon grape contain the yellow alkaloid berberine, which has broad-spectrum antibiotic activity and has been recently studied for its ability to reduce inflammation in the body, regulate blood sugar, increase insulin sensitivity, and lower cholesterol.
Oregon grape root is associated with the liver and gallbladder, having a cooling, or inflammation-reducing effect on the liver and a regulating action on the bile. Berberine-containing herbs like goldenseal and the Chinese herb huan lian, or coptis, are used worldwide to help relieve inflammatory conditions of the lower abdominal area (especially those associated with the intestines) and liver (which also benefits gallbladder inflammation). Oregon grape root has been recommended for heat in the stomach with such symptoms as tooth and gum pain, inflamed gums, a burning and gnawing feeling in the stomach area, styes, and facial acne. It may also be useful for vaginal yeast infections. Oregon grape root tea, tincture, and other kinds of extracts are especially indicated for skin problems such a dermatitis, eczema, boils, and acne, and they have a beneficial effect on gastric ulcers as well.
Oregon Grape has a taste of BITTER and a temperature of COLD.
Cautions
Any herb with berberine is contraindicated during pregnancy because results show it could lead to neonatal jaundice. However, despite claims to the contrary, berberine does not have an abortifacient action. Nonetheless, do not use berberine-containing herbs during pregnancy and lactation without the advice of a qualified health practitioner or doctor.
For the most part, berberine-containing herbs like Oregon grape root are very safe. Do not exceed the recommended dose or use it for more than 1 or 2 weeks without advice from an herbalist. Berberine can lead to as much as a 50 percent increase in blood levels of some pharmaceuticals.
Conditions treated with Oregon Grape
Condition
Treatment Support
Application
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The information given here is designed to help you make informed choices about your health. The information is drawn from numerous sources—both traditional medicine practice, from the clinical experience of many herbalists currently practicing, and supported by decades of scientific research from the author. The research most consulted includes human clinical trials that help to determine the most effective and safe herbs for various needs, the best doses, and types of preparations.
The information offered in this database is not intended as a substitute for any that may have been prescribed by your health practitioner or physician.