Herbal goodness - organic mullein leaf liquid extract - 1 fl oz. Mullein extract has been used for centuries to lung function and respiratory health. It has a rich, aromatic taste and is made from the leaves of the common mullein (verbascum thapsus), a flowering plant native to europe, africa, and asia lung & respiratory support keto friendly usda organic non gmo fairly traded. Herbal goodness organic mullein leaf liquid extract - 1 fl oz. (24 servings)