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Berberine is a compound found in plants such as barberry and goldenseal. There is some clinical evidence that it may lower blood sugar and cholesterol in people with type 2 diabetes. However, berberine may not be safe for certain people and it can interact with a number of medications. In addition, tests by have revealed that some berberine and goldenseal supplements on the market don't contain the expected amounts of berberine. For more about the clinical evidence for berberine and goldenseal, safety, dosage and the best way to take these supplements, plus our tests of products, see the Berberine and Goldenseal Supplements Review >>

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