These pure Tonic herbal powdered extracts are dense and a little bit goes a long way. Our formulas are very powerful and unique - designed by Rehmannia to positively benefit your life! All our herbal powdered extracts are pure and uncut, ranging around 10:1, which means that 10 pounds of raw herbs were extracted down to 1 pound of dried powdered extract. The industry standard is 5:1, which allows companies to cut their powders with maltodextrin and other fillers. Our 10:1 extracts indicate that no fillers have been added.