Turmeric 95% Extract Antioxidant Support Herbal Supplement Gluten Free Guaranteed Quality-Laboratory Tested 100% Vegetarian Turmeric Curcumin Extract Curcumin is the principal polyphenol found in the turmeric root. Curcumin 95 is a concentrate of 95% curcuminoids, naturally occurring phenols, that provides powerful antioxidant support.