Not only is there often no way to know where the ingredients of locally obtained Formulas come from and whether the distributed herbal formulas have been tested but in recent years also many “modernized” versions of original formulas have flooded the market. While such new versions might benefit human patients they often fail to work in animals. These are the reasons why we only work with original recipes and purchase our supply from a company specialized in herbal medicines that work in animal patients such as dogs and cats.