Berberine+Ceylon Cinnamon is not a dramatic weight-loss drug, and we don't think it should be sold like one. We have had some users report weight weight loss, and some research has found modest effects on weight and BMI, particularly with more than eight weeks of use, but results vary considerably based on other factors such as lifestyle. We think of weight management as one part of the bigger metabolic picture—not a “lose 20 pounds fast” promise.