Barberry is an evergreen deciduous shrub with oval red fruits. Barberry has been known for its medicinal uses for over 200 years. Barberry can strengthen your immune system, improve heart health and reduce the risk of cancer. Barberry has been used in traditional medicine for centuries to treat digestive problems, infections and skin diseases. People consume barberry because of its dramatic health benefits. In general, barberry extract is used for medicinal purposes and as a natural healer to treat high blood pressure, diabetes, high cholesterol, stress and other diseases.