Oregon grape (Mahonia aquifolium) is a flowering plant that has been used for centuries in traditional Chinese medicine to treat various conditions, including psoriasis, digestive issues, heartburn, and low mood. The plant’s root and stem contain active plant compounds that help fight bacterial and fungal infections, as well as inflammation and skin diseases. One of these compounds, berberine, has both antimicrobial and anti-inflammatory properties, making it an effective ally in managing various health issues.