special subjects
Goldenseal
Does goldenseal work?
The effectiveness of goldenseal as a cold remedy has not been proved. In some relatively well-designed studies, berberine isolated from goldenseal reduced diarrhea, including diarrhea in people with irritable bowel syndrome. Emerging evidence shows that in people with diabetes, berberine can decrease fasting and postprandial glucose and hemoglobin A1C (HbA1C). Berberine has also been shown to lower cholesterol, blood pressure, and body weight. 