From the Manufacturer:
AntioxidantCurcumin 95™ is an 18:1 concentrate of the antioxidants found in the spice turmeric root. Curcumin 95™ contains 95% curcuminoids (including curcumin, demethoxycurcumin and bisdemethoxycurcumin), which are antioxidants.Specifically, curcumin and its derivatives protect DNA against oxidative damage induced by singlet oxygen.* Turmeric in Latin is Curcuma longa. The roots of the plant are stem-like and are used as an herb in Asian cooking such as in making curries.