Oregon Grape Root Tincture Also known as: Mahonia aquifolium, Mountain Grape, Oregon Grapeholly, Oregon Barberry, Holly Leaved Barberry Oregon Grape Root is often used topically to improve skin health, but it also supports healthy digestion. This herb also contains immune-supportive constituents. Oregon Grape Root is very similar to Goldenseal in its therapeutic uses. Oregon Grape Root is also known as mountain grape; it thrives in mountainous regions of the Pacific Northwest in the U.S. The Oregon Grape plant grows tiny blue berries that resemble small grapes. We receive this herb dry and activate the many beneficial properties within the plant through our extraction process.