Doctor's Best Curcumin C³ Complex -- 1000 mg - 120 Tablets Doctor's Best Curcumin C³ Complex Description May Benefit The Joints By Helping To Neutralize Free Radicals From Turmeric Root with Curcumin3 Complex and BioPerine® Science-Based Nutrition Gluten & Soy Free Non-GMO Vegan Best Curcumin C3 Complex® contains a potent standardized extract of Curcuma longa root, commonly known as turmeric.