Best Curcumin C3 Complex is a potent antioxidant that protects cells and tissues by fighting free radicals^Proven to support healthy joint function^Best Curcumin C3 Complex contains a standardized extract of Curcuma longa root and supplies 95% total curcumin- oids, including curcumin, bisdemethoxy curcumin and demethoxy curcumin^As curcumin is difficult to absorb, we add BioPerine, an extract of Black Pepper fruit that contains 95-98% piperine as a natural bioenhancer^Non-GMO, Gluten Free.