- Scientific Name: Berberis Aquifolium
- Plant Family: Berberidaceae
- Parts Used: Rhizome and Roots, Bark, Fruits
- Actions: Alterative, cholagogue, diuretic, laxative and tonic
Several varieties of the subgenus Mahonia contribute to the drug of commerce under the name of Berberis aquifolium. It is a quickly-growing shrub about 6 feet high: the oddly compound leaves have no spine at the base; they are evergreen and shining. The flowers grow in terminal racemes, are small and yellowish-green in color, and the purple berries are three- to nine-seeded. The bark is brown on the surface and yellow beneath. The root is from 1/2 inch in diameter to 3 inches at the base of the stem, odorless, and with a bitter taste. The shrub was introduced into England from North America in 1823. It was formerly known as Mahonia aquifolia and is very hardy.
Note:It should not be used with Glycyrrhiza species (Liquorice) because this nullifies the effects of the berberine.
Oregon grape was often used by several native North American Indian tribes to treat loss of appetite and debility. Its current herbal use is mainly in the treatment of gastritis and general digestive weakness, to stimulate the kidney and gallbladder function and to reduce catarrhal problems. The root and root bark is alterative, blood tonic, cholagogue, diuretic, laxative and tonic. It improves the digestion and absorption and is taken internally in the treatment of psoriasis, syphilis, haemorrhages, stomach complaints and impure blood conditions. Externally, it has been used as a gargle for sore throats and as a wash for blurry or bloodshot eyes.
The blue fruits are tart and improve after frost. They are often gathered for jelly or wine. Used to treat a wide variety of ailments, Oregon Grape species contain the extremely potent alkaloid, berberine, (also found in goldenseal) which is antiseptic and stimulates the liver and spleen.
The fruit is an excellent gentle and safe laxative. Berberine, universally present in rhizomes of Mahonia species, has marked antibacterial effects and is used as a bitter tonic. Since it is not appreciably absorbed by the body, it is used orally in the treatment of various enteric infections, especially bacterial dysentery.
Berberine has also shown anti-tumor activity.
It is one of the best alterative blood purifiers and liver stimulants. Uses for the Oregon Grape Root include weak digestion, flatulence, jaundice, blood impurities, and as a general tonic to the whole system.
A decoction (instructions below) will be found to be a wonderful blood purifier and will restore health to many who are suffering from a sluggish liver, weak stomach, indigestion, and sallow skin.
Years ago, it was given to children, and said to create appetite and promote digestion, and increase strength and vitality. The current medical thinking is that it is not safe for children, especially infants, or pregnant or nursing women. (see information at the bottom of the post)