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Dietary SupplementGastrointestinal Healthy Blood Glucose and Healthy Cholesterol Support Suitable For Vegans And VegetariansSource Naturals Berberine provides 500 mg of berberine hydrochloride an amount shown in clinical studies to support multiple body systems. A human clinical trial has shown that berberine supplementation can support gastrointestinal health. Several clinical trials have demonstrated that berberine can help support healthy blood glucose levels and healthy blood cholesterol levels already within the normal range.