Each Pure Nutrition Berberine Tablet contains 500 mg of Berberine extract (standardised to 98% berberine). It also contains 70 mg of Fenugreek extract (50% saponins), 70 mg of Jambu beej extract (20% tannins), 70 mg of Karela extract (0.5% alkaloids), 50 mcg of Chromium picolinate, and 50 mg of sodium. If you are specifically asking about the berberine strength, it provides 500 mg of Berberine extract per tablet.