Barberry is an herbal medicine that is used in kidney and liver disease, diarrhea, malaria, fever, cough, atherosclerosis, cancer, heart disease, and urinary tract infection. It has also been used for colds and flues and to preven yeast overgrowth with antibiotic use. Other names for Barberry include: Berberis Vulgaris, Jaundice Berry, Pepperidge Brush, and Sowberruy. Check with your doctor before usin Barberry.