Berberine 500 mg, 120 Vegetarian Capsules, Source NaturalsSource Naturals Berberine Dietary Supplement. Gastrointestinal Support. Healthy Blood Glucose. Healthy Cholesterol Support. Source Naturals Berberine provides 500 mg of berberine hydrochloride, an amount shown in clinical studies to support multiple body systems. Supplement Facts Serving Size: 1 Capsule Amount %DV Berberine HCl (from Berberis aristata root) 500 mg Other Ingredients: hydroxypropyl methylcellulose (capsule), stearic acid, and magnesium