Doctors' preferred® - berberine 1500mg: clinical grade - 90 capsules clinical grade berberine - a unique research-dose botanical formula for ing healthy blood sugar and sensitivity. Doctor developed triple tested certified cgmp facility gluten free these statements have not been evaluated by the food and drug administration. This product is not intended to diagnose, treat, cure, or prevent any disease. . Doctors' preferred berberine clinical grade healthy - 90 capsules (30 servings)