Dietary Supplement Blood Sugar & Cardiovascular Support Suitable for Vegetarians/Vegans Purity & Potency Guaranteed Berberine is a naturally occurring plant alkaloid found in various plants, including barberry, goldenseal, and Oregon grape. Many herbalists credit this unique alkaloid for the beneficial effects of many traditional tonics made from these plants. Berberine plays an important role in blood sugar (glucose) metabolism and cardiovascular health. Berberine helps maintain healthy blood sugar and total cholesterol levels already within the normal range. Isura Non-GMO Mass Spec Documentation Lab Tested