The berries of the barberry are traditionally used to make jams and jellies. But the herb has also a long history as a remedy for digestive disorders, including constipation, diarrhea, dyspepsia, heartburn, and loss of appetite. Moreover, it was thought to increase the flow bile, which is why it was used for liver and gallbladder problems. It was also recommended for treating skin conditions like eczema, psoriasis, and acne, as well as minor wounds.
The Natural Medicines Comprehensive Database (NMCD), one of the most reliable natural medicine resources available, rates berberine as “possibly effective” for a range of conditions including: Canker Sores, Diabetes, High Cholesterol, High Blood Pressure, Polycystic Ovary Syndrome (PCOS), and Diarrhea.