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Our products are herbal dietary supplements and have not been evaluated by the Food and Drug Administration, are not intended to diagnose, treat, cure or prevent any disease. Information and statements made are for education purposes and are not intended to replace the advice of your treating doctor. We suggest consulting a physician before using our or any other herbal supplements. Hawaii Pharm does not dispense medical advice, prescribe, or diagnose illness. The views and nutritional advice expressed by Hawaii Pharm are not intended to be a substitute for conventional medical service. Your use of the website, its content, and any services or products obtained through the website is at your own risk. In no event will Hawaii Pharm, its affiliates or their licensors, service providers, employees, agents, officers, owners or directors be liable for damages of any kind, under any legal theory, arising out of or in connection with your use, or inability to use, the products, any content on the website or any services obtained through the website or such other websites, including any direct, indirect, special, incidental, consequential, or punitive damages, including but not limited to, personal injury, pain and suffering, emotional distress, loss of revenue, loss of profits, loss of business or anticipated savings, loss of use, loss of goodwill, loss of data, and whether caused by tort (including negligence), breach of contract, or otherwise, even if foreseeable.

LATIN NAME: Mahonia aquifolium

FAMILY: Berberidaceae

GENUS: Mahonia

COMMON NAMES: Oregon-grape or Oregon grape

ORIGIN: native to western North America

BOTANICAL INFORMATION: Evergreen shrub of up to 1m high, forming a thicket. The bark on young shoots is pinkish-gray, old shoots are brown-gray, with longitudinal striae. Leaves are complex, odd-pinnate, of up to 15-20 cm length. Flowers in diameter are about 8 mm, collected in multicolor brushes, of light yellow, bright color often with a lemon tint. Berries are oblong-elliptical, up to 10 mm long, covered with fluff, with 2-8 seeds, sweet and sour. Seeds are oblong, 4.5 mm long, chestnut and shiny. Flowering period is in April-May. Fruits ripen in August-September.


The fruits of mahonia contain sugars, tannins, organic acids, P-active and pectin substances, ascorbic acid.

The roots include isoquinoline alkaloids (berberine, hydrastin, berbamin), palmitin, zinc, copper, silicon, manganese, sodium. There are tannins, flavonoids, pectins, organic acids and some microelements (potassium, copper, zinc, etc.) in the bark and branches of the plant.



The plant of Mahonia is toxic, as there are alkaloids in its composition. Therefore, there are the following contraindications to the use of this plant:

  • pregnancy
  • breast-feeding
  • children's age
  • cholelithiasis
  • gastritis
  • ulcer of the duodenum

Overdose of Mahonia can cause diarrhea and nausea.


The recipe: Pour 100 ml of vodka over 10 gr of crushed Mahonia bark, infuse for 7 days in dark cool place, then strain. Take 5-15 drops diluted with water when having diarrhea, dyspepsia, gout, rheumatism, kidney, liver and gallbladder diseases.

The root extract of the plant is used as a remedy to improve appetite and general strengthening.

“You cannot eat a cluster of grapes at once, but it is very easy if you eat them one by one”

Jacques Roumain

*This article is for informational purposes only. We suggest consulting with a physician before using these or any other herbal supplements.